#### Still Unsure About What Process Structure Interaction Is And How It Can Benefit You?

04/29/2013

This month, Altair Partner Alliance’s Vicky Newby had a chance to learn more about the APA’s only Process Structure Interaction tool, CONVERSE. She was able to discuss the interface with OptiStruct, unique applications and benefits, among others with PART Engineering’s very own Sascha Pazour.

09/25/2012

This short video will guide you through the non-linear implicit capabilities in RADIOSS. The example shows how to create a plastic material and corresponding shell properties, setup boundary conditions and imposed velocity, setup and run the analysis and review the results of bending of a plate.

#### Model Calibration Using Optimization Techniques

06/27/2012

 Fatma Koçer-Poyraz -  Director of Business Development

Introduction:

When we think of optimization, we naturally think of finding the design with minimum cost, maximum performance, etc. However, we can use optimization methods for objectives other than minimizing or maximizing. One of these use cases is to meet a set of target values; so we need neither to minimize a response nor maximize it. We instead need to make sure that it achieves the target value.

A typical application comprises model calibration problems, such as simulation material model calibration to match to test data. We can formulate these cases as minimizing the difference between sets of data leading us down the path to use optimization methods for efficient and effective solution- finding.  How we calculate the difference may depend on the application, but a very common calculation that works well for most problems is to minimize the sum of normalized-difference-squared. Another common calculation may involve calculating the area between two curves.

The first aspect of solving such problems easily is the method selection. The second aspect is the ease of setup, and the third aspect is the post-processing. In HyperStudy, we have an objective function formulation called System Identification. System identification allows users to set target values to a number of responses and automatically creates the difference equation and uses it as the objective function. In the pos- processing site, HyperStudy lists the values of all objectives, the delta between them, and the targets and the normalized deltas. We will now go through an application that uses system identification for material model calibration. (more…)

06/26/2012

## Topic details:

Frequency Response Analysis is used to calculate the response of a structure subject to steady state oscillatory excitation. Typical applications are NVH (Noise, Vibration and Harshness) analyses of vehicles, rotating machinery and transmissions. The analysis is to compute the response of the structure, which is actually transient, in a static frequency domain. The loading is sinusoidal. The loads can be forces, displacements, velocity and acceleration. The response occurs at the same frequency and damping would lead to a phase shift. The outputs from a frequency response analysis are displacements, velocities, accelerations, forces, stresses and strains. The responses are usually complex numbers that are either given as magnitude and phase angle or as real and imaginary part.

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#### Product Updates – April 2012

04/23/2012

HyperWorks now available for Mac OS X

HyperWorks tools become more available to science and creative professions with Mac version

HW-11.0.230-HWSolvers

HW-11.0.230-HWSolvers contains many new features, enhancements and bug fixes to HyperWorks 11.0 solver suite including RADIOSS, MotionSolve, OptiStruct and HyperXtrude.

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#### Formula Student Racing

03/27/2012

Two University of Stuttgart racing teams recently reported exceptional results from employing HyperWorks tools to simulate vehicle design and reduce the weight of their cars prior to vehicle construction.

The impact of HyperWorks is evident in the victories earned by the Stuttgart teams.  In 2011, the Rennteam was rated number one in the Formula Student world rankings and has won 10 single competitions since 2005.

The GreenTeam, with 37 teams participating in the electric category in 2011, placed second in Italy and currently holds third place in the overall worldwide rankings list for the electric competition.

02/28/2012

AcuSolve 1.8b

The V1.8b release of the AcuSolve product suite comes equipped with many exciting new features and improvements. This release continues to build AcuSolve’s reputation for providing high quality, fast, and robust solutions by introducing new physical models, techniques to reduce computational time, and a powerful post-processing solution.

HyperWorks Solvers

HW-11.0.220-HWSolvers contains many new features, enhancements and bug fixes to HyperWorks 11.0 solver suite including RADIOSS, MotionSolve, OptiStruct and HyperXtrude. See the release notes for full details.

HyperWorks Solvers

HW-10.1-SA1-206-HWsolvers and HW-10.0-SA1-206-HWsolvers were re-released last week to fix an incorrect label shown in the RADIOSS output header section, ALPHA-14516, when running a RADIOSS job after installing the above SA updates.  This mislabel incidence does not impact the application functionality, you can continue using the software as it is.  This issue has been fixed and you can download the new package and  re-install  it on top of the current installation if you wish.

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