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Ford Motor Company: Building an Efficient HPC Infrastructure
The cars, trucks, vans and SUVs that roll off Ford Motor Company assembly lines are safer, quieter, and more comfortable than ever. Many of the intangibles that contribute to Ford quality flow from the innovative use of high performance computing (HPC) techniques. At Ford's Numerically Intensive Computing Department (NIC) in Dearborn, Michigan, engineers run simulations in codes such as NASTRAN and LS-DYNA for predictive analysis of cylinder cooling, wind noise, vibration, ride quality, crashworthiness, durability, and other characteristics that contribute to industry-leading automotive design.

Development of a Lightweight SUV Frame Concept
The lightweight SUV frame project was a research initiative with the key objective to reduce the baseline frame structure's mass by 25% by applying concept design optimization upfront.

Concept Design Optimization of Automotive Components
ArvinMeritor succesfully applied topology and topography optimization to various automotive components.

汽车部件概念设计优化
      ArvinMeritor成功的将拓扑和形貌优化应用到汽车零部件设计中。

Optimization Assisted Design of Military Transport Aircraft Structures
EADS Military Aircraft implemented an optimization assisted structural design process and applied it to the A400M rear fuselage design.

优化帮助军用运输飞机结构优化设计
      EADS军机部门将优化贯彻到结构设计流程中,将其应用于A400M后机身设计。

Product Line Extension Strategies
Six key factors enable companies to increase market share and profitability while reducing investment risk.

CAVE Sets the Stage for Real-Time Collaboration
An immersive virtual environment speeds the creation of prototypes to cut time in military product development programs.

CAVE虚拟环境提供实时协作平台
       身临其境的虚拟环境,加速原型创作,缩减军工产品项目的研发时间。

Use Best-in-Class Components to Integrate Product Development
Achieving the best overall product development environment requires that CAD and CAE systems work well together.

Get the Most from Your Casting Process
By applying optimization technology to casting process design, manufacturers can produce less expensive, better-quality parts in record time.

An Advanced Method for Optimising Packaging Design
Consumer product packaging designers are faced with conflicting requirements throughout the development process. Good pack aesthetics are vital for the success of the product, whilst unit costs must be minimized and suitability for stacking and transportation maintained. This paper describes, by example, how design optimization technology can be used to enhance the design process. It is demonstrated that the technology can be employed to provide clear design information for the pack designers, facilitating definition of an attractive shape incorporating features to meet the structural and manufacturing requirements whilst minimizing cost.

优化包装设计方法
       消费类产品包装设计人员在整个开发过程中面临着相互冲突的要求。良好的包装美学是产品成功的关键,同时单位成本必须降到最低程度,并满足一定的堆放和运输要求。本文举例介绍了在设计流程中如何应用优化技术。结果表明,这种技术可以给设计人员在满足结构和制造要求情况下,提供清晰的包装设计信息和有吸引力的形状特征,同时最大限度的降低成本。



FEKO Webinar: Taking Radar Cross Section (RCS) to the Next Level
Based on practical examples, this webinar will offer a guided tour through computational methods to determine Radar Cross Section (RCS), from objects of just a few wavelengths, to objects of thousands of wavelengths in size.

FEKO Webinar: EMC Simulation of Automotive, Aerospace & Other Applications with FEKO
This webinar recording provides an overview of features, applications and real use-cases where FEKO is used for EMC simulation, including emissions, immunity, lightning effects, High Intensity Radiated Fields (HIRF), Electromagnetic Pulses (EMP), shielding effectiveness and radiation hazard

3Dプリンターの能力を最大限に引き出すAltair のトポロジー最適化テクノロジー
1980年代後半にその手法が提案され、1993年に構造解析プログラムであるHyperWorks OptiStruct に導入されたトポロジー最適化は、工学的に有意な生物学的構造を作り出すことが可能な手法であり、このテクノロジーを適用することにより、従来設計手法の難点を克服し、3D プリンターの特性を活かすことのできるコンセプトデザインを創出することが可能となった。
-「機械設計 5月号」第60巻 第7号掲載

FEKO Student Competition Winner 2015 Webinar: Design of Platform-mounted HF Antennas with Enhanced Bandwidth using CMA
For the first time, the winning entry for the 2015 FEKO Student Competition is presented in a webinar format.
Professor Nader Behdad from the University of Wisconsin-Madison will present his winning student, Ting-Yen Shih's entry.

FEKO Webinar Recording : Designing with Characteristic Mode Analysis (CMA)
Characteristic Mode Analysis (CMA) gives insight into the fundamental resonant behaviour of a structure. This helps engineers to follow a systematic design approach, making use of the parameters calculated with CMA.

This webinar covers the latest in FEKO's CMA solver. The webinar starts with a discussion about typical workflows for CMA simulations, giving a better understanding of when and how CMA is best used. Then some recent CMA applications are reviewed and concluding with some exciting new CMA features.

FEKO Webinar Recording: Accelerate Complex Platform Modelling and Simulation with HyperMesh and FEKO
FEKO is the most used and recognized electromagnetic simulation software for antenna placement, EMC and RCS of platforms, including aircraft, vehicles, ships, satellites and missiles. The clean up of the model can be tedious, depending on the quality of the CAD data.

In this webinar we demonstrate the workflow of an aircraft EMC use-case focusing on High Intensity Radiated Fields (HIRF). The advantages of using HyperMesh to clean up a model will also be highlighted. FEKO will be used to set up the simulation and show the desired results.


Resource Scaling for Antenna Placement Modeling on a SAAB JAS-39 Gripen Aircraft
This white paper demonstrates how resource requirements scale for the computational electromagnetic modeling of a modern fighter aircraft when the frequency increases. It also demonstrates how different simulation methods may be applied and how they scal relative to each other

Cross-Coupling between a 3G Transmitter & a Cable Bundle
This white paper demonstrates how the cable modeling interface in FEKO was used to compute cross-coupling effects between a cable bundle and 3G antenna mounted on a vehicle.

FEKO Webinar: The Use of Model Decomposition and Equivalent Sources for Faster Simulation
System level simulation often involves multiscale type problems, where the structure might be electrically large while also containing details which are significant to the RF performance. These types of simulations can typically require large computational resources. Model decomposition enables these problems to be solved in two steps by using an equivalent (simulated or measured) representation of the transmitting or receiving antennas. Significant reductions in computational requirements can be achieved with this approach.

FEKO for Rotorcraft
FEKO is well-suited for rotorcraft electromagnetic applications including antenna placement, rotor blade modulation, co-site interference,
electromagnetic interference (EMI), electromagnetic compatibility (EMC) and radar cross section (RCS).

FEKO 14.0 Overview
See an overview of the new features available within FEKO in 14.0. HyperWorks 14.0 is the first version containing the FEKO product line.

Altair Embed Datasheet
Altair Embed is an intuitive graphical environment for model-based embedded development. Diagrams are automatically converted to highly-optimized and compact code, which is essential for low-cost microprocessors and high-speed sampling rates. The code can be verified, debugged, and tuned with off-line simulation before downloading it to the target microcontroller (MCU).

FEKO Demonstration
See the demonstration of the FEKO product line in action. In this demo, a model will be run through the CADFEKO pre-processor, solved with the FEKO solver, and post-processed with POSTFEKO.

Automotive Radars - Antenna Design, Integration & Channel Modeling
One of the key enabling technologies in the development of autonomous vehicles is driving aid radar systems. We will highlight some of the typical challenges experienced during the design and integration of automotive radars, as well as the applicable numerical solutions that FEKO offers. Radar channel modelling with WinProp is also presented.

FEKO Webinar: Automotive Radar Design & Integration at 76 - 77 GHz
This webinar covers several techniques and approaches which highlight how FEKO can be applied for efficient and accurate simulation of the radar antenna design as well as the integration aspects, including radome and bumper effects.

Feature Extension and Automation in Altair Feko through Scripting
The powerful scripting capabilities in Feko provides users with the means to extend the features available in the interface. Tasks and calculations that need to be performed repeatedly can also be automated allowing users to save time.

In this webinar the scripting language (Lua) and the available scripting capabilities in Feko will be briefly introduced.

Reflector Antenna with Circular Horn Feed — Analyzed with Ray Launching Geometrical Optics (RL-GO)
FEKO includes several computational methods for the efficient analysis of different antenna types. Here, a large problem is solved with the
full-wave and asymptotic methods. Model decomposition is used to simulate the problem more efficiently.

FEKO Webinar: Wave Propagation and Radio Network Planning Simulation with WinProp
The rapid growth of mobile and wireless communications has significantly increased the need for propagation modelling and network planning simulation.

This webinar will introduce how WinProp fits into the electromagnetic simulation offering of HyperWorks, including the future plans in connection with FEKO.



Analysis of Thermal Stress on Motors - Efficient Multiphysics Tools for Thermal Analysis
In this article published in the Magnetics Technology 2017 edition, we look at the application of efficient multiphysics tools for thermal analysis.

From Radar Waves to Road Safety
From the moment radar was first invented, it has proved its value in collision avoidance - first at sea, then in the air and later on the road. This white paper gives an overview of the development that has taken place.

Defence or Civil Radar – it’s a Matter of Wave Propagation
Radar development was essentially motivated by military needs during the second world
war, where radar use founded dozens of applications for instance navigation, aircraft location, enemy ship detection, anti-collision, and weather forecast.

This white paper discusses the design challenges faced and the solutions available.


mmWave Substrate Lens Antenna for Wire Communications
Wu et. al. [1] proposed designs for both single and multi-beam mmWave circularly polarized substrate lens antennas in 2001. This white
paper demonstrates these designs via FEKO modeling.

mmWave Axial Choke Horn Antenna with Lens
Millimeter wave (mmWave) antennas operate in the band of frequencies where the wavelength is between 10mm and 1mm. The frequency
range for mmWave application is thus constrained to be greater than 30 GHz, but less than 300 GHz. Various applications exist in
this frequency range, including wide band telecommunication and imaging applications for security screening. This white paper
demonstrates how an antenna was designed for communication at 60 GHz.

FEKO : Helping to Understand the Universe
The Square Kilometre Array (SKA) : Cutting edge technology, design and innovation

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Altair Model Mesher Director Datasheet
Companies face the challenge of analyzing ever larger and more complex models. This added complexity has the potential to negatively impact the design cycle time. As a result, analysts need to ensure that the model meshing process takes place rapidly and consistently across design teams. Altair's Model Mesher Director (MMD) is designed to reduce modeling time by allowing the user to quickly perform a range of pre-processing activities.

Altair Virtual Gauge Director Datasheet
Correlation between CAE and tests results is very strategic activity. It boosts the confidence in the development of the product. Altair’s Virtual Gauge Director (VGD) is a combination of customized software and services that enable engineers to extract the results at the exact position of the strain gauge as in the test lab, interpolate the results at an identified CAE location, compute results in the local coordinate system of the gauge, and give a correlation index confidence. The Director can also be used to interpolate stress or strain values at any placement in the model.

Numerical Methods in FEKO
FEKO offers a wide spectrum of numerical methods and hybridizations, each suitable to a specific range of applications. Hybridization of numerical methods allows large and complex EM problems to be solved.

FEKO Webinar Recording: Time Domain Responses from Frequency Domain Results
Frequency domain results can be transformed to obtain time domain responses. This webinar will cover the signal setup in POSTFEKO and how it relates to the frequency domain specification in CADFEKO.

OptiStruct最新版紹介 - HyperWorks14.0
OptiStructは静荷重および動荷重下の線形および非線形構造の問題に対応する構造解析ソルバーです。弾塑性解析や接触解析における新機能、ラティス構造最適化の強化内容などについて紹介しています。
*2016年3月7日に開催されたウェビナー「Altair製品 最新版 ウェブ発表会 2016 OptiStruct編」で使用した資料およびその録画です。

RADIOSS最新版紹介ウェビナー - HyperWorks14.0
RADIOSSは動荷重下での極度な非線形の問題に対応する優れた構造解析ソルバーです。より強化された非線形解析機能(接触、破壊モデル、複合材モデル、ホットスタンピング、新時間ステップなど)を紹介しています。
*2016年3月8日に開催されたウェビナー「Altair製品 最新版 ウェブ発表会 2016 RADIOSS編」で使用した資料およびその録画です。

MotionSolve最新版紹介ウェビナー - HyperWorks14.0
MotionSolve 14.0における3次元接触のためのメッシュ取り扱いの注意点、および、MotionView 14.0での接触設定の機能強化を紹介します。
*2016年3月10日に開催されたウェビナー「Altair製品 最新版 ウェブ発表会 2016 MotionSolve編」で使用した資料およびその録画です。

HyperForm / HyperXtrude最新版紹介ウェビナー - HyperWorks14.0
HyperWorks 14.0では、生産技術系のアプリケーションも新たな進化を遂げています。本セミナーでは、HyperForm / HyperXtrude両製品の新機能を中心に紹介しています。
*2016年3月11日に開催されたウェビナー「Altair製品 最新版 ウェブ発表会 2016 HyperForm / HyperXtrude編」で使用した資料およびその録画です。

FEKO最新版紹介ウェビナー - HyperWorks14.0
FEKO 14.0では、モーメント法(MoM)およびマルチレベル高速多重極法(MLFMM)で曲線状のワイヤセグメントメッシュをサポートします。

*2016年3月14日に開催されたウェビナー「Altair製品 最新版 ウェブ発表会 2016 FEKO編」で使用した資料およびその録画です。


Antenna Design Methodology for Smartwatch Applications
Smart devices have touched and enhanced all aspects of our lives, from the way we conduct business to the way we relax at the end of the day. Designing antennas for wearble devices presents a unique set of challenges. In this technical article from Microwave Journal, these issues are discussed.

FEKO Student Competition Winner 2016 Webinar: Embedded Element Pattern Beam Model for Murchison Widefield Array
Daniel Ung's entry was selected as the winner of the 2016 FEKO Student Competition.

A precursor to the Square Kilometre Array (SKA), the Murchison Widefield Array (MWA) radio telescope was constructed in the Murchison Radio-Astronomy Observatory in Western Australia.

In this one-hour webinar Daniel presented his report detailing how he made use of FEKO.



FEKO Webinar: Design Optimization with FEKO & HyperStudy
Solving complex design problems with an approach based on intuition can be challenging, especially when multiple design parameters interact with one another and several design goals are targeted. Join us for this webinar in which we will present a brief summary of different optimization methods, together with workflow demonstrations to set up a design.



FEKO Webinar: Efficient Antenna Array Modelling
FEKO contains various techniques for the efficient modeling of antenna arrays during the design process. The application and advantages of techniques such as periodic boundary conditions (PBC), the domain Green's function method (DGFM) and equivalent sources for efficient array modeling are demonstrated in this webinar.


Accelerate your Creativity with Flux 12.2
The new version of Flux software brings many new features that will accelerate the engineer’s creativity when designing electric equipment or electromechanical devices. Improvements in 3D modeling, post-processing and transient solving can be seen as well as a faster simulation process.

This version allows users to take full advantage of Altair’s unique licensing system. Together with the new connections to various Altair tools, it allows for optimization studies, coupling with vibro-acoustics and system-level analysis.

Flux Webinar: Green Taxiing Application
Understand FEM design concepts behind building a Green Taxiing System and other similar electromechanical devices to help airlines save on fuel costs and cut C02 emissions.

Flux Starter Motor Design - Generator
Watch this recorded webinar to learn how Flux can help with designing Starter Motors.

Flux Webinar: Design of Electromagnetic Actuators with Flux & Optimization
During this 30 minute on-demand webinar discover how actuators are replacing standard hydraulic motors and how to optimize your design.



Cable Harness EMC/EMI: Cross Talk, Radiation, Interference & Susceptibility
Bundles of electrical cables in vehicles, aircraft, ships and buildings pose electromagnetic compatibility and interference challenges to the
electrical design engineer. Due to their lengths, they are more likely to radiate or pick up irradiation than many other electrical components
and systems. Through several examples, this white paper will discuss how those challenges can be met with the aid of electromagnetic
simulation.

Radar Cross Section of Aircraft with Engine Inlets
At radar frequencies, 1GHz and above, asymptotic methods are usually preferred to calculate the radar cross section (RCS) of targets like aircraft, since the main parts of the target are more than an order of magnitude larger than the wavelength. The challenge is how to combine these methods to compute the RCS. In this white paper the two-step method that obtains accurate results in limited time is detailed.

Overcoming Challenges in 5G Antenna Design, Radio Coverage & Channel Analysis with FEKO & WinProp
This webinar will show how FEKO and WinProp can be used for the 5G antenna design, analysis of radio coverage and channel statistics including the antenna effect. This allows the requirements to be derived for the 5G antennas, as well as strategies for the 5G network deployment, including the 3.5 GHz frequency bands for area-wide high data rate services and the 26-28 GHz bands for capacity hotspots.

Key Benefits of Combining Measurements with Simulations for Antenna & EMC Applications
Altair has been working with Microwave Vision Group (MVG) for many years on the combination of measurements done with MVG antenna measuring systems with FEKO simulations. This webinar will explain how such a combination represents an alternative solution for antenna manufacturers to share data with device and platform manufacturers without exposing their IP.

Flux 12.3 New Features
Overview of the new features in Flux 12.3

【Altair情報誌】Concept to Reality Winter/Spring 2016(日本語版)


米国本社Altair Engineering, Inc.が発行する技術情報誌「Concept to Reality」の翻訳記事です。-イノベーションを実現し続けて30 周年 / 3Dプリンティング人工衛星コンポーネント / ネバダ大学は、いかにしてスーパーコンピューターを導入、活用できたのか / Jaguar Land Rover 社が環境にやさしいアルミニウムボディに移行 / 設計の可能性を広げるIoT 革命 /
2016年発行

Combining Near-Field Measurement and Simulation for EMC Radiation Analysis
Electronic components are required to comply with the global EMC regulations to ensure failure free operation. Currently, EMC
measurements in certified institutes are mandatory to certify performance complies with regulations.This paper describes a practical method of combining near-field measurements and simulations to explore the radiation behavior of
electronic components.

Nelson Mandela University: Designing a Winning Eco-Car
Martin Badenhorst, Masters Student at Nelson Mandela University, Port Elizabeth, South Africa, shares how he managed to reduce the weight of their eco-car by 20%.

Approaching Learning Differently at Nelson Mandela University in South Africa
Watch this short video to find out how the Faculty of Engineering is approaching teaching differently with the help of Altair's learning tools.

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Bowtie Antenna
This paper illustrates that FEKO can be applied to the simulation of planar antennas with bowtie antennas as an example.

Conformal Multi-Band Patch Antenna
Simulating the Planar and Curved Antennas in FEKO

Two Arm Spiral Antenna
A two-arm self-complementary archimedean spiral antenna is modelled in FEKO to determine its wideband behaviour.

Modeling of a Magic Tee Waveguide Coupler
A short depiction of FEKO‘s waveguide capability with a magic T coupler as example.


Advanced Radar Cross Section (RCS) Visualization with POSTFEKO and Lua Scripting
This white paper demonstrates how Lua scripts in POSTFEKO may be used to produce advanced visualizations of RCS data that was
computed in FEKO.

A Thin, Low-Profile Antenna Using a Novel High Impedance Ground Plane
The size of the antenna for a given application does not depend purely on the technology but on the laws of physics where the antenna size
with respect to the wavelength has the predominant influence on the radiation characteristics.

Horn-Fed Reflector Antenna
A horn-fed parabolic reflector is modeled in FEKO to determine its radiation pattern.

Cassegrain and Gregorian Reflector Antenna Modeling with MLFMM LE-PO Hybrid Solvers
This white paper demonstrates that the MLFMM-LE-PO hybrid formulation is a very efficient and accurate method for analysis of large
reflector antennas.

Microstrip Bandpass Filter
A microstrip bandpass filter is modeled in FEKO to determine its S-parameters.

Designing an LTE Base Station Antenna with the Finite Arrays Method
This white paper demonstrates how an LTE base station antenna may be modeled with the finite arrays (DGFM) method in FEKO.

Modeling & Analysis of Anechoic Chambers
A white paper demonstrating how FEKO models were used during the design stages of an anechoic chamber that operates in UHF ranges.

MRI Birdcage Coil Design
An application note on the modelling of a 7T MRI birdcage headcoil in FEKO.

Probe-Fed Stacked Annular Ring Antenna
This example illustrates how a probe fed stacked annular ring antenna may be simulated in FEKO.

Radar Cross Section (RCS) Measurement and Simulation of Generic Simple Shapes
RCS targets including the NASA almond, ogive, double-ogive, cone-sphere and cone-sphere with gap were constructed and the RCS was simulated. Simulation data is compared to measured data in open literature.

FEKO Webinar: The Growing Role of EM Simulation for Connected Vehicles and e-Mobility
This webinar will show how FEKO and WinProp are used to solve design and validation challenges related to:

(a) Connected vehicles, including antenna integration aspects. The use of virtual drive tests to reduce the costs and time of extensive road tests being done to study and analyze new connected vehicle functions, and

(b) Wireless power transfer systems and electromagnetic compatibility aspects which are key on electric and hybrid vehicles

Flux Webinar: Sensor and Actuator Design for Transportation Applications
In this webinar we discuss and illustrate how electromagnetic simulating technology enables a flexible new alternative solution for electromagnetic transmission, with electromagnetic couplings replacing mechanical and differential couplers.

Design and Analysis of a Proximity Fuse Antenna for an Air Defence Missile
This white paper is an example of how Antenna Magus can be used to generate antennas for antenna placement studies in FEKO.

Metamaterials in FEKO
A description of how metamaterials may be modeled in FEKO followed by guidelines regarding the different simulation options.

Flux Webinar: Electric Machine Design Workflow for Traction Applications
Nowadays, when modeling motors for electric vehicles, more and more constraints are to be fulfilled at the same time. The motor has to be very efficient, less noisy, avoid vibration and at the same time - not too hot and very cheap. In this webinar we will show the different tools available from pre-design, fine tune electromagnetic analysis, NVH analysis, to thermal analysis and system analysis.



Electromagnetic Simulation Growth in the Product Development Cycle
Product development is becoming more challenging due to stricter regulations, and reduced development times and budgets for prototyping and testing. The necessity to add more electronics into new products is making their design more challenging and sensitive to electromagnetic phenomena and effects.

This 40 minute webinar will show how different EM software tools are used in different processes and workflows to tackle these product design challenges.

Flux Webinar: Efficient Solutions for EM Design Exploration and Optimization
In this webinar we will demonstrate how Altair HyperStudy, HyperWorks’s multi-disciplinary design exploration tool coupled to Flux can help engineers in the design of high-performance products and reduce cost and the development cycle.



Flux Webinar: Improving the Manufacturing Process with Efficient Induction Heating Applications
Heat Treatment is widely used in different industries in different manufacturing processes, such as heating, brazing, hardening, welding, sealing, etc. and in industries, such as food, energy or transportation.

In this webinar, we will show you how Flux simulations can efficiently help to design, analyze and optimize the heat treatment process and equipment.

SmartCore improves energy performance and profitability of Unatec
Unatec, a company with over 10 years in energy solutions consulting, faced the challenge of controlling costs and improving production for energy producers. Uncontrolled costs and incorrect predictions can greatly diminish profits, potentially incurring losses.

SmartCore optimizes fleet management at Boyaca
Boyacá has been handling the daily delivery of newspapers and magazines in Spain for more than 35 years. Fulfillment of time schedules is essential for customer satisfaction and late deliveries can result in additional costs. Boyacá needed to have direct real-time information on arrival and departure times at each hub of the distribution chain in order to control costs with the lowest possible investment. Several hundred trucks are used for delivery every day.

A shell facet model for preliminary design of cylindrical composite structures
The laminated composite lay-up design typically involves trade-offs between material selection, thickness of the layer, orientation of the layers, and the stacking sequence. Finding the right structural concept early in the design process leaves resources for the detailed design. Many structural members made of laminated composite materials have the form of thin walled cylindrical shells that are prone to buckling. Thus it is desirable to find structural designs that satisfy global requirements for structural stability early in the design phases. In this work, thin-walled cylindrical composite shells under different loading conditions have been studied for structural stability. The simulation is performed with a shell facet model implemented in the ESAComp software. Preliminary design tools for structural stability of thin-walled cylindrical composite shells are demonstrated and discussed.

Design-Optimization of a curved layered composite panel using efficient laminate parameterization
Layered composites have proven essential for the successful design of high-performance space structures. The aviation industry are increasingly using more and more layered composites within commercial aircraft, replacing traditional aluminum designs, to achieve weight savings. When optimizing layered composite structures it is desirable to find design solutions that satisfy global requirements early in the design phases. Particularly because of the number of design variables associated with composite layups once models become more detailed are complex:


Preliminary design of a wing spar bonded joint PrintE-mail
Fast tools such as the ESAComp module for bonded joints can be very efficient in the preliminary design of various joint configurations. In this example we consider a tip loaded wing of a small aircraft or wind turbine blade. The wing spar carries a constant in-plane shear (Nxy), which needs to be transferred from the joint laminates to the shear web.

Using Experimental Test Data In The Analysis Of Laminated Structures
Composite material systems have relatively large variation in their measured properties. A typical approach in engineering problems is deterministic, however. Material stiffness and strength, for example, are described with single values in linear-elastic analyses. Physical dimensions of the material, structural and environmental conditions in the laminate or uncertainties in material properties, for instance, require that several discrete definitions are needed for the material specification.

Design Optimization Of A Composite Car Body
This paper describes how a carbon fiber reinforced plastic body of a future city car was optimized to minimize weight. The frame includes numerous parts, some of which have a simple constant laminate structure and some are more complex having additional local reinforcements. The body must meet the different stiffness and load carrying constraints set by the various load cases.

Design-Optimization Of Cylindrical, Layered Composite Structures Using Efficient Laminate Parameterization
For many years, layered composites have proven essential for the successful design of high-performance space structures, such as launchers or satellites. A generic cylindrical composite structure for a launcher application was optimized with respect to objectives and constraints typical for space applications. The studies included the structural stability, laminate load response and failure analyses. Several types of cylinders (with and without stiffeners) were considered and optimized using different lay-up parameterizations. Results for the best designs are presented and discussed.

Pressure vessels: The composite solution from ComposicaD and ESAComp
With composite pressure vessels foreseen as a significant industrial growth sector, Mike Skinner, from Seifert and Skinner & Associates, talks us through their approach and how the composite solution offered by ComposicaD and ESAComp provides efficient design and analysis to meet the emerging markets.

Considering large deflections in panels - ESAComp 4.4 introduces nonlinear analysis
In composite panels with large support spans, deflections are primarily due to bending. Out-of-plane shear can also play a significant role in sandwich structures. While these deformation types are considered in the typically used linear static analyses, the results are not accurate when going beyond the small deflections regime. When a panel is firmly fixed at its edges, it starts to carry loads partly like a membrane already at low load levels. The panel exhibits stress stiffening. Consequently, with an appropriate analysis approach more efficient structures can be designed.

ESAComp meets challenging marine applications
In this article we learn about ESAComp's role in the design-development of a carbon composite RIB "Rigid-hulled Inflatable Boat", the latest project from Dr. Luca Olivari, a naval architect, founder and owner of the Italian company Olivari Composites Engineering.

At the origins of delamination stresses - Free edge analysis gives insight
When you make a tensile test for [±45/0/90]s and [90/±45/0]s laminates you may observe different failure strengths. This may seem first surprising since the laminates are basically the same - only the stacking sequence is different, which should not influence on the in-plane values.

Modern organic architecture with ESAComp
ESAComp software used for the preliminary laminate analysis, to evaluate the structural component behaviour along with the development of the joint system in the Varna Regional Library

Anisogrid Payload Adaptor Structure For Vega Launcher
In the framework of a development project promoted by the European Space Agency (ESA/ESTEC), Airbus Defence & Space (EADS CASA Espacio, ECE) has designed, manufactured and tested a technology demonstrator representative of the payload adaptor (PLA) of VEGA Launcher, by using an anisogrid concept, called anisogrid payload adaptor (APA).

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