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Speeding up Altair OptiStruct* Simulations with the Intel® SSD Data Center Family for PCIe*

Altair OptiStruct* provides engineers and designers with a unified solution from concept to final design by leveraging advanced analysis capabilities and novel, optimization-driven simulation. In this process, the simulation time for one optimization iteration is a critical consideration, since it affects the computational speed and scalability of the entire design process.

White Paper: One Source Solution for Short-Fiber Reinforced Materials in FEA

With use of today’s technology, FE simulation of the injection molding process is state of the art. Several unique solvers are available for this purpose. However, an appropriate coupling between the injection molding simulation and the mechanical simulation is required.

OptiStruct is 17x faster with the latest Dell Precision Workstation

The reduction of run times up to 17X is a direct result of more powerful hardware and the more advanced algorithms in Altair’s latest software releases.

Whitepaper: A Design-Validation-Production Workflow for Aerospace Additive Manufacturing

Additive manufacturing coupled with topology optimization allows the design-and-analysis and manufacturing iterations to be reduced significantly, or even eliminated. To ensure that the part will perform as simulated, a mid-stage validation is conducted on a standardized part before creating the final products.

Global-Local Analysis Using StressCheck, HyperMesh, HyperView and OptiStruct

This whitepaper describes the workflow for combining global and local analysis in structural development using StressCheck in combination with HyperWorks.

The Art & Science Behind Manufacturing

Do you ever think about all the work that lies behind developing almost everything in the world around us? This article reflects on the tremendous effect the manufacturing process has on everything we use in our daily lives.

Design and optimization of a high performance C-Class catamaran with HyperWorks

Reprint of the article published on composite solutions magazine 2/2016.

Computer Simulation's Role in Advancing Composite Aircraft Structures

Reprint of an article published on the December 2014 issue of Aerospace & Defense Technology magazine

Optimization Drive Design - A Desktop Engineering Sponsored Report

Optimize every stage of product development with an integrated workflow that democratizes simulation and analysis. In this Desktop Engineering sponsored report Altair's vision for product optimization is analyzed

Daimler - Calculation of Optimal Damping Placement in a Vehicle Interior

One of the most difficult jobs of a NVH Analyst is to sift through a seemingly endless set of results and find the key conclusions that will improve a design. Different assumptions and different subsets of data can give very different conclusions. This paper compares acoustic results calculated for a Class 8 heavy duty truck cab to choose an optimal configuration of damping material. The design was evaluated for structure and air-borne inputs, but only structure-borne inputs are considered in this paper.

Applications of Advanced Composite Simulation and Design Optimization

Usage of fiber reinforced composite material entered an new era when leading aircraft OEMs took an unprecedented step to design and manufacture essentially full composite airframe for commercial airliners. Composite structures offer unmatched design potential as the laminate material properties can be tailored almost continuously throughout the structure. However, this increased design freedom also brings new challenges for the design process and software. Moreover, as a relatively new material, composite behaviors are more complex and less fully understood by design engineers. Therefore, reliable simulation for highly complex events like bird strike and ditching can play an important role in shortening the product design cycle. This paper showcases two area of CAE tools for composite applications. On advanced simulation, bird strike simulation with Altair RADIOSS [1] is demonstrated on an aircraft underbelly fairing. On design optimization, an airplane wing structure is designed using an innovative composite optimization process implemented in Altair OptiStruct [1-3]. OptiStruct has seen increasing adoption among aerospace OEMs, as demonstrated in the Bombardier application process described in this paper.

Automotive Modal Testing Support and CAE Correlation Using Altair HyperWorks

To derive the natural frequencies and mode shapes of a given structure, the test Engineer has to decide on excitation positions that will efficiently excite all the modes of the structure in the frequency range of interest. Excitation positions are usually decided upon from experience or trial and error methods which can be time consuming and still not capture all of the modes in the selected frequency range. Using Altair HyperStudy and Radioss (bulk), Pre-test CAE analysis has been carried out to identify effective excitation positions before the commencement of modal testing, thereby significantly reducing pre-test lab time.

The Application of Process Automation and Optimisation in the Rapid Development of New Passenger Vehicles at SAIC Motor

As a relatively young automotive company, SAIC Motor has drawn on the expertise of its UK Technical Centre to help in its objective to bring a new range of vehicles to market in an aggressive time frame. CAE has formed an integral part in doing this and the UK technical centre has worked closely with Altair Product Design amongst others to utilise its Engineers’ skills as well as the Hyperworks suite of software. The paper aims to showcase what has been achieved to date, on the Roewe 550 medium car programme - currently on sale in China - and on another current vehicle programme, where processes have been developed further. Several interesting optimisation examples are highlighted in the development of the body structure as well as some key process improvement methodologies which have been jointly developed between SAIC and Altair to streamline the design process.

Delivering Innovation and Intelligence in Product Design

Packaging designers must constantly inject innovations to attract consumers in a constantly evolving and highly competitive market. Keeping ahead of the competition by bringing new and exciting products to market faster whilst maintaining quality, presents a major engineering challenge. A new packaging development process is described, which introduces advanced automated simulation and optimization technology right from the concept development phase. Detailed predictions of primary, secondary and tertiary packaging performance are made possible through use of advanced simulation technology. Design optimization is then employed using the modelling as a virtual testing ground for design variants. The approach provides clear design direction, an opportunity for wider experimentation, helps to improve performance and reduces uncertainty in the development process.

Evolutionary Design in Chassis Technology

This paper details the use of the Thyssenkrupp eDICT process for the design of sheet metal chassis components. eDICT (evolutionary design in chassis technology) is an innovative structured process flow for the design of optimal structures. eDICT uses the optimisation capability of Optistruct with a set of custom tools to guide and translate a design into a production feasible sheet metal solution. Fundamentally it reverses the usual design loop of CAD first then CAE assessment. The function is used to determine the design and the form follows. On recent projects eDICT has produced 25% mass reductions compared to the current series design. eDICT is also able to reduce development times and resource with an efficient solution production right from the outset.

Targeting Composite Wing Performance – Optimising the Composite Lay-Up Design

This paper shows how Altair OptiStruct, part of the HyperWorks suite, is used to provide a complete solution when designing with laminated composites, taking the design through concept stages to producing the final ply lay-up sequence. The technology is applied to the design of a laminated wing cover to produce a mass optimised design which meets the requested structural targets.

Composite Optimisation of a Formula One Front Wing

This paper will show the application of a 3-stage approach to designing the optimum composite structure for a front wing on a Formula One car using Altair OptiStruct 9.0 Continual development of aerodynamic components is normal practice in the world of Formula One and the time taken to respond is paramount if a team is to be competitive.

Application of Optimisation Tools to the Design of Advanced Carbon Fibre Bicycle: FACTOR 001

FACTOR 001 is the result of a creative project by BERU f1systems to explore the transfer of design approaches, technology and materials from Formula One to a groundbreaking training bicycle. The design brief did not require the bicycle to comply with existing technical regulations, which resulted in great freedom during the design process. This paper details how OptiStruct Optimisation tools were used to help generate efficient lightweight solutions for the design of complex carbon fibre components. Free-size optimisation was used to generate laminate boundaries, ply thicknesses and fibre directions, which met stress and displacement requirements. Physical testing carried out on manufactured parts highlighted the accuracy of the FE models and demonstrated the advantages of incorporating OptiStruct Optimisation tools in the design process.

Targeting Composite Wing Performance – Optimum Location of Laminate Boundaries

This paper investigates the application of newly available optimization functionality available in OptiStruct to provide design guidance to generate innovative laminate composite solutions. Due to the flexibility of laminate composites, it has great potential to exhibit displacement characteristics that could significantly increase the aerodynamic performance. Free element sizing technology is used to determine concept lay-up solutions. These solutions determine the laminate make-up, thickness and the various laminate boundaries of an aircraft wing covers under multiple loading conditions which meet the required displacement targets whilst also minimising mass. These preliminary studies demonstrate that the technology can successfully achieve displacement targets for multiple load cases. Each analysis study can be completed within minutes and consequently can be utilised as a valuable concept design tool.

Simultaneous Robust and Design Optimization of a Knee Bolster

This paper introduces a practical process to simultaneously optimize the robustness of a design and its performance i.e. finds the plateau rather than the peak. The process is applied to two examples, firstly to a composite cantilever beam and then to the design of an automotive knee bolster system whereby the design is optimized to account for different sized occupants, impact locations, material variation and manufacturing variation.

Development of a Wingbox Rib for a Passenger Jet Aircraft using Design Optimization and Constrained to Traditional Design and Manufacture Requirements

The application of optimization technology is becoming increasingly widespread throughout the aviation industry, exploiting the potential to design lighter aircraft. This paper details the application of optimization techniques to reduce the mass of an aircraft wing component when optimization is used at the design initiation stage of the process. Altair OptiStruct provides an optimization toolkit to determine the most efficient load path for various constraints, then allow the designers to size the components based on the enveloping load cases. Applying this optimization technology into Bombardier existing design process enabled a saving of approximately 10% on the mass of the component.

A New Approach to Optimizing the Clean Side Air Duct Using CFD Techniques

An integrated approach to CFD design optimization is proposed. It consists of taking an initial CAD design, meshing it using HyperMesh, analysing it using Star-CD, parameterising its key features using HyperMorph, and then shape optimizing it using HyperStudy. This approach has been applied here to the shape optimization of the compressor inlet duct of a turbo system.

Rapid Design Exploration to Determine Feasible FPSO and Spar Systems

The riser design process is well established and uses verified simulation tools to predict response to environmental loading. Design optimization is an established technology which has been widely used in other industry sectors including aerospace and automotive. Riser systems show inherently non-linear sensitivity to applied loading and parametric changes. For this reason response surface methods are required for optimization. The paper discusses two example riser configuration design problems and describes integration of Altair HyperWorks design optimization technology with the existing design process. The optimization proved to be efficient and repeatable. The designs produced for each configuration proved to be strong improvements over the baseline starting points and the wealth of information on sensitivity provided deeper understanding of the factors influencing design performance.

A Holistic Virtual Design Process Applied to the Development of an Innovative Child Seat Concept

There is a need to minimise product development costs and provide efficient design solutions to maintain competitiveness, so increasingly companies in the Child Restraint System (CRS) industry are turning to Computer Aided Engineering (CAE) to enhance the design and development for their products. Graco has worked with Altair Engineering to develop a group 1 CRS using an advanced CAE driven design process. The design process introduces a number of key phases in the design cycle each of which are positioned to maximize the efficiency of the structure and reduce or remove the cost involved in a traditional, iterative ‘test it and see’ approach.

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.

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