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free shape optimization
I am currently performing a free-shape optimization of a structure. The constraint I set is a maximum allowable shrinkage of 8 mm during optimization. However, during the calculation, it only iterates once, and the optimization stops as soon as the maximum deformation from the shape optimization reaches 1 mm. What could be…
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Altair Flux 2024 Topology optimization - definition of mechanical problem
Good morning, I'm performing a Topology optimization in Altair Flux 2024. I'm working with a SPMSM electric motor and i have a doubt about how to model the mechanical problem for the optimization. I defined the rotor as mechanical region, with E, nu, and rho. Then I set the boundary condition: Fixed for all the DOFs at the…
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Flux 2024 Topology optimization - definition of element densities
Goodmorning, I'm working with Altair Flux 2024 with topology optimizations. I performed an optimization of the rotor of a SPMSM and I would like to perform another topology optimization on the previous design result. In particoular I would like to use the same densities of the design produced by the first optimization as…
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hyperstudy: Error in Running several optimization with same model with Excel
Hello, once I have defined a model in Hyperstudy with Excel, It works well to do one optimization. But then, I want to run a new optimization, I always get this error that it cannot find the excel, and thus cannot run the optimization. And the Excel is there, so I dont understand. See images for more info. Thanks a lot!
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I'm having issues with my solvers licensing
While I'm fine following the steps to check my student's license in hwDesktop applications, I'm encountering issues the time I try to launch any analysis in Optistruct and therefore trying to use HyperStudy module. How can i solve this issue? Thanks in advance.
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White paper-Multi-Material Topology Optimization for Automotive Applications with Altair OptiStruct™
Topology optimization has become an integrated part of the design cycle where light-weighting and robustness are important for vehicle structures. With advances in novel manufacturing methods, it has become easier to manufacture parts and assemblies with multiple materials, like over-molds of plastic and metal, hybrid…
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Topology Optimization X structur due to torsion
Hello everyone, for my thesis, I'm performing a topology optimization on a train car. I have different load cases, such as a compressive force or the effect of the car's own weight plus payload. In one case, the car is lifted at three of its four points, so that it's tilted in the air. This is meant to simulate a torsional…
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Analysis and Optimization of an automotive cradle using single finite element model with multiple at
https://us.v-cdn.net/6038102/uploads/4CYT8NOCARMG/nafems-auto-2019-analysis-and-optimization-of-an-automotive-cradle-using-single-finite-element-model-with-multiple-attributes-i-e-nvh-2c-strength-and-fatigue.pdf Nafems Presentation on Finite element analysis has been an important part of vehicle product design. Currently…
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Problem with skateboard Tutorial in HyperWorks 2024.1
Dear Professionals, I am currently trying to complete the "Composite optimization of a skateboard with OptiStruct" Tutorial in HyperWorks 2024.1 Now since the Tutorial is written for a older Version it is a little bit more difficult but I managed up until point 3.3.3 Check-run and Phase 2 Optimization Run (The pdf of the…
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Save invalid elements to user mark?
Hey, every time I'm exporting my solver deck files of my RADOPT opimization the question appears: Save invalid elements to user mark? Yes or No I have found a Tcl command hm_getusermark elems does this show all the elements or just the invalid ones? Because I get a huge number of elements if I type in that command. So my…
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Internal programming error
Hey, every time I run a RADOPT topology optimization the Solver fails and I get this message: *** INTERNAL PROGRAMMING ERROR *** in file "datasetFtoC.c", at location # 488. ERROR DATA: igicmt -1234 Dset ID out of range what can I do? Thanks for your help!
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Implementing supervisory control via DLL in PSIM (real-time synchronization issue)
Hello, I’m trying to implement a supervisory control system using optimization codes in PSIM to generate the reference signals for converters in the simulation environment. The optimization code is written in C++ and implemented as a DLL block in PSIM. I’m using the Gurobi solver to handle the energy management…
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Problem with importing sizing.fem file in Hypermesh
Hi, I did a free size optimization of a composite model (with optistruct) and when I try to import the sizing.fem file Hypermesh instantly crashes. I'm using a student license and the 2024 version. How can I solve this problem? Thank you in advance.
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Analysis and Optimization of an Automotive Cradle using Single Finite Element model with Multiple At
White paper "Analysis and Optimization of an Automotive Cradle using Single Finite Element model with Multiple Attributes i.e. NVH, Strength and Fatigue" https://us.v-cdn.net/6038102/uploads/EH692AS8KOFY/singlemodelmultipleattributeworkflow.pdf Finite element analysis has been an important part of vehicle product design.…
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Hyper study - stuck in task evaluation
hi all, I am working optimizing an IPM motor designed from Fluxmotor. In the process of task evaluation, i get my write, execute and extract to be running succesfully but after a number of runs,- some times after 92% or 20% in the process of evaluation, the system gets stuck and there is no progress in the evaluation hence…
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Hyperworks 2022.1 run options analyze to optimization
Hi, I'm doing the tutorial: Track 2: Design Composite Structures with Simulation 3 Composite Optimization While doing the free-size optimization, changing the run options from analyze to optimization seems possible. I tried with 2022.1, and it's clearly not possible in this menu. I was looking at the Solver Options but I…
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Radioss optimization error
Hi, I'm trying to run an simple toy topography optimization problem in Radioss where a pressure is applied dynamically to a square plate (solid elements). When running the RADOPT file I receive the following error. How can I understand what is happening here? *** ERROR # 4306 *** No ESL is generated by SUBCASE 1 to do…
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Fast-Track eDrive Efficiency Maps in PSIM | Webinar June 2025
Fast Track eDrive Efficiency Maps in PSIM This webinar walks through an end-to-end process for generating efficiency maps in PSIM - both at the inverter level and system level - by leveraging its seamless connection with Altair Flux. We'll also cover strategies and tips for making sure all operating points are hit…
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Lunar Module Landing Simulation in MotionSolve and Twin Activate
INTRODUCTION Developing a lunar lander is a challenging task, as the Odysseus lander proved. Landers must be lightweight, while withstanding the stresses of the rocket launch and landing. Under ideal conditions, the lander would achieve zero velocity both vertically and laterally as the vehicle touches down. Practically,…
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Using of composite failure constraint in phase 2 size optimization.
Hi, I am using size optimization to create a laminate which is subjected to an out of plane load. I want to use a composite failure constraint to determine the minimum size that the different directions of plies need. However, during this stage of optimizing, the composite failure constraint is sensitive to the location…
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Best alternatives to overcome error # 7004 - Free-size optimization with OptiStruct
Hi there, I am currently doing a master thesis project with the main goal of creating an optimized composite laminate version for a specific structure. In my case, I created, in a manual approach, a initial standard laminate (ply-based) for the component and now I would like to optimized it, particularly in terms of mass…
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Type 3 Controller Optimization - Part 2: Phase Margin and Crossover Frequency
In the previous article we described the setup for the optimization of a buck converter with a Type 3 Controller. This workflow uses measurements from the output waveform to qualify the controller. But, what about the frequency domain characteristics? In this article we’ll show how to add Phase Margin and Crossover…
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Flux - SimLab Tutorial: 2D DOE and Optimization of PM Motor
Introduction Permanent magnets play a crucial role in modern electromechanical devices, ensuring efficient performance in applications ranging from electric machines to sensors. PM motors are now the most used motors in the automotive industry. Optimization is key to improving performance. Recent advancements in simulation…
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Hypermesh optimization methods, freesize, solvers DSIZE STACK or DSIZE PCOMP
Description: I wonder what's the difference between the two solvers DSIZE STACK and DSIZE PCOMP in the definition of the DSIZE card for the freesize optimization. Which solver sould I use? And why?
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Type 3 Controller Optimization - Part 1
In this article we will explain how to set up the optimization of a Type 3 Controller with PSIM and HyperStudy. Note: Part 2 has been uploaded and adds Phase Margin and Crossover Frequency to the optimization. The first thing we need to do is to define our variables (inputs) and goals for the optimization so that we can…
