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How to use FEKO with HyperMesh

This document applies to FEKO 14.0 and HyperMesh 14.0.
Users who would like to make use of the benefits of the advanced meshing features of HyperMesh while solving the electromagnetic aspects of the problem in FEKO, have several options to transfer the mesh from HyperMesh to CADFEKO. This document provides the recommended options and a brief description of how to complete the model setup in CADFEKO.

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.

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 Webinar: 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.



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 Webinar: An Introduction to FEKO

This webinar is aimed at new users of FEKO. Topics covered include the user interface, model set-up,solver selection, tips and tricks, as well as demonstrations.

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.


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).

Engineering oriented formulation for laminate lay-up optimization

The concept of elementary laminates is used to formulate the design problem for a
laminated composite structure. A parameterized laminate is divided into stacks with periodic patterns of elementary laminates. With elementary laminates desired regularity for the laminate lay-ups is achieved, which is practical for multi-layer laminates. Due to the reduced design space solution time can be considerably reduced. Two laminate lay-up formulation concepts are presented and their performance is evaluated. The design problem used as a reference case involved the optimization of the stacking sequences to maximize plate buckling loads using a genetic algorithm.

PROBABILISTIC LAMINATE ANALYSIS USING ESACOMP SOFTWARE

Engineering design problems include always
uncertainties such as variation in material properties or environment, incomplete statistical data to generate input, modelling and human errors. Yet, the design in general relies on single numbers obtained from engineering equations. In case of strength prediction the material strength is derived using statistical methods
and the uncertainties is included in the design value (A or B-value).

CFRP Electronics Housing for a Satellite (ESA 2005)

The drive for continuous mass reductions in spacecraft structures has promoted the use of carbon fibre reinforced plastics. CFRP has excellent specific stiffness and strength, which makes it possible to construct lightweight structures. CFRP is typically used in applications where electrical, thermal and radiation protection properties are not decisive.

Transverse shear in Laminate Analysis

This paper describes the method for transverse shear analysis to be applied in the composites design program ESAComp. The correlation of the method to the formulations used in the commercial finite element programs is presented and the results from the selected method are compared to the exact elasticity results. The results show good agreement with the exact solutions for cross-ply and unsymmetric angle-ply laminates. Symmetric angle-ply laminates create bending twisting coupling that the theory cannot accurately model.

FACILITIES IN ESACOMP FOR ANALYSIS AND DESIGN OF ADHESIVE BONDED JOINTS

This paper presents a newly developed analysis and design module for adhesive bonded joints implemented in ESAComp, software for analysis and design of composite laminates and laminated structures.

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.

ADAS Simulation Under Severe Vibrations

Automotive radars are becoming standard equipment on vehicles. Their purpose is to adjust the distance between vehicles and/or alert the driver when dangerous situations arise. Several antenna architectures are used to cover the different safety functions in complex bumper/car chassis environment where the side
effects become more and more significant on the radar performances. Hence, automotive radar integration process becomes a very important
topic. Weak radar integration will generate gain loss, high side lobes levels and angular errors. Those degradations will impact the radar range,
the main radar axis (BSE) and the radar detection quality (resolution, ambiguity, discrimination).

Cobot, the Collaborative Robot - Get Ready for Industry 4.0

Development tools and methods, such as simulation, are increasingly important to face and address the pressure of innovation. As an example, for successful new design methods and to show how simulation tools are used, Altair developed a virtual demonstrator based on a cobot application. This complex machine interacts with a human operator as the ultimate smart manufacturing equipment - to show how challenges in modern product design can be overcome.

Flux Webinar:Cutting Edge Electromagnetic LF Simulation Solutions - Discover Flux 2018 & Couplings to the HyperWorks Platform

Using breakthrough technologies, Flux is the perfect tool for the analysis, design and optimization of modern applications such as electric rotating machines, actuators and sensors, high power electrical equipment, heat treatment or electromagnetic compatibility.

Flux Webinar: Accelerate your Design Process with Flux - Dealing with Complex 3D CAD Models

In this webinar discover all the capabilities of the Altair pre-processing tools to handle real complex cases with Flux.

In addition we explore the powerful features of HyperMesh allowing you to to defeature, modify and manage your complex assemblies. We also explore the various functionalities in SimLab which will allow you to easily mesh large problems.

Designing the Future of e-Mobility

Altair develops multiphysics simulation technologies that allows designers to
accelerate next generation mobility solutions development. From smart control
design, to powertrain electrification and vehicle architecture studies, our solutions
enable optimization throughout the development cycle.

Flux Webinar: Cutting Edge Electromagnetic LF Simulation Solutions - Discover Flux 2018 & Couplings to the HyperWorks Platform

Using breakthrough technologies, Flux is the perfect tool for the analysis, design and optimization of modern applications such as electric rotating machines, actuators and sensors, high power electrical equipment, heat treatment or electromagnetic compatibility.

Flux 2018 includes a new PEEC solver, offers new HPC capabilities, brings several new enhancements for losses computations and offers more comfortable couplings to the Altair suite, from pro-processing tools to multi-physic couplings.

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.

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.

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

Design Innovation for the Medical Industry

Altair helps medical companies across the world achieve product development objectives through its unique approach, which blends CAE simulation software, design creativity and in-depth engineering expertise to achieve optimal product designs.

Flux 12.3 New Features

Overview of the new features in Flux 12.3

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.

Getting Started - Inspire Structures

A course to help users get started using Inspire Structures including an interface tour and workflow training/videos.

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