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Power Electronics Design Utilizing Machine Learning for Thermals
(This is a translated version of an article posted by Kosuke Ikeda. The original article in Japanese can be found here) At the 1DCAE & MBD Symposium 2024, held in Hiroshima from November 28 to 29, 2024, a presentation was given on the theme “Power Electronics Design Leveraging Machine Learning and 1D Simulation.”…
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Out of plane rocker joint
Hello, how can i change this joint to be on the plane of the shock, tie rod, and mounting point. Right now it is running vertical but as you can see I need it to be at an angle or plane between the points mentioned, How can i do this
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Pothole FEA
Any suggestions on how to run a pothole FEA for a Chassis?
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Several questions about Motionview
The first question: Regarding impact contact, for example, if I have two rigid bodies stacked up and down, and I set up impact contact, but I find that these two rigid bodies will produce contact vibration, that is, one rigid body will bounce up and down on the contact surface of the other rigid body. How can I quickly…
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Does msolve api support altair driver and full vehicle events
I am trying to build a full vehicle model using the msolve api, but could not find any support to add the driver or perform full vehicle events. Please let me know if this is possible Best Regards Yugal
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Some confusion in Craig chang contact flexible body in Motionview
In Motionview, CBC's flexible body can be set for contact calculations with the flexible body. Now I see two settings below (including contact models at rigid nodes, as shown in my screenshot), but I have looked at the help documentation and don't quite understand how to set them up. Assuming I have a bearing, how should a…
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How to determine the K coefficient in the Impact and Bistop functions?
I have read through this article and I'm wondering how the coefficients of the Impact and Bistop functions are determined. Link: "https://community.altair.com/discussion/64607/modeling-motion-limits-and-single-impact-forces-using-impact-and-bistop-functions" The impact function is: With the example: Disk on Disk Impact,…
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Altair motionview
Hi everyone, I’m having an issue when running a static ride analysis in MotionView. The first run usually works fine, but when I try to run the same analysis a second time, it always throws errors — even though I haven’t changed any parameters in my imported model. Has anyone encountered this before or knows what might be…
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Simulate the force applied to open the bus luggage compartment by MotionView
I am working on a project for a course, which is to simulate the force to open the bus luggage compartment. Initially, I used motion to control the joints, and the model worked well. However, after I switched to using force, the model stopped working. Can anyone help me explain why this happened? And what would be the…
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Problem in creating Flexible H3D file for altair motionview
Hello All, I need to do flexible MBD simulation. I am doing it by following method. Create Meshing using Altair hypermesh and then export *. fem file. Import *. fem file in motion view flex prep to create H3D file. Now problem is in step1. When i try to do *. fem export it is not happening properly and i find *. fem…
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How to extract global moments of inertia and calculate impulses
Hi all, I'm looking at trying to extract impulses from bodies in a MBD model. For linear impulses this is relatively trivial but for angular impulses the need to compute the inertia tensor makes this more difficult. Currently bodies are defined with inertias given in a global coordinate system not the cm. I assume the…
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Setting Up a Python MotionSolve File in HyperStudy
In multibody dynamics, design exploration helps identify how different model parameters influence system performance. Altair HyperStudy is a powerful multidisciplinary design exploration and optimization tool that enables engineers to improve product performance and robustness through intelligent design analysis. Some…
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Unable to plot Motion Ratio Plot
When I tried plotting motion ratio vs time, it showed a straight line (zero value). I have attached the warning in the motion solve window.
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Fsae OptiStruct Questions
I saw in anther post that you could take the data from the Static Load Analysis in Motion View and apply it to an OptiStruct simulating, is there a video of someone doing this or could I get a quick explanation, I have the Load analysis done and the Frame I want to test was made in Solidworks.
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i want to simulate the power required for my vehicle during acceleration
i am a complete beginner to altair, i came here to simulate the required power of my vehicle during acceleration and the increase in power during turns. I want to know whether i can simulate this. If yes, i want to know which software should i use and a guide on how to use.
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Modify vehicle parameters
Hello everyone, I have constructed a car model using a modelling approach. However, I wish to modify the parameters to increase the vehicle's minimum ground clearance so that it does not collide with the road during steep incline simulations. What method should I employ to make these adjustments? Thank you. Best regards！
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Model Validation and Solver Tuning for Contact Simulations
When validating a model, there are numerous action items to verify. For example: Are the mass and inertia properties correct for each part? Are the joint and motion constraints properly defined? Are inputs and outputs converted to the correct units? Are the contact parameters appropriate? Is the mesh sizing adequate for…
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chain and sprocket model with idlers contact problem
Hello, I am running a chain and sprocket model with idlers. But the time step becomes smaller as it runs and the animation falls apart. I set the joints as revolute joint with one compliant, and contacts are 'links&cutters to middle idler', 'links&cutters to bottom idler', 'links to sprocket'. I tried to debug, it seems…
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Modeling Motion Limits and Single Impact Forces Using Impact and Bistop Functions
Have you ever asked yourself these questions while modeling? “I have a component that is allowed to move 5 mm in both the positive and negative Z directions. How can I define that limitation?” “I have two large components that only come into contact at a single point, but the model takes a long time to export due to…
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FSAE Workshop: Suspension Design and Vehicle Dynamics Using MotionView/MotionSolve 2025.1
https://youtu.be/MzVP98Dazn0 Engineering students involved in Formula SAE (FSAE) and similar competitions often face the challenge of designing, testing, and refining a complete vehicle under tight deadlines and resource constraints. These projects frequently involve troubleshooting unexpected issues, especially when…
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How to Use Our Own Chassis Model in Altair Baja/FSAE Vehicle Library
Hi @Christopher_Fadanelli I’ve been exploring the Altair Baja/FSAE library. I wanted to confirm whether there’s an option to add our own or did you provided default already on the chassis? (custom frame geometry) in place of the default one. If that’s possible, could you please explain the correct procedure or workflow for…
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Inquiry About Pushrod Suspension and Anti-Roll Bar Models in FSAE_BAJA Library
Hi, I hope you’re doing well. I wanted to ask if there are any existing models in the FSAE_BAJA library that can be adapted to simulate a pushrod suspension system with either a U-shaped anti-roll bar or a dual-blade (Z-bar) anti-roll bar, as I haven’t been able to locate one. If no such model exists, would it be possible…
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FSAE_PUSH ROD SUSPENSION WITH U SHAPED ARB OR Z ARB (DUAL BLADE) SIMULATION
Hi, I hope you’re doing well. I wanted to ask if there are any existing models in the FSAE_BAJA library that can be adapted to simulate a pushrod suspension system with either a U-shaped anti-roll bar or a dual-blade (Z-bar) anti-roll bar, as I haven’t been able to locate one. If no such model exists, would it be possible…
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MotionView Solver Can't mesh ParaSolid graphics. What should I do?
Hello, I am currently building a Model in MotionView. When trying to test my progress I get following message in my solver window. WARNING: Can't mesh ParaSolid graphics in Post_Graphic/90017. When I examine the results in Hyperview only one of my parts is missing which I suspect to be the cause of the warning, because…
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Static Loa Analysis Event Fsae
Hello, I have been trying to get the static load analysis to work as both the vehicle tools event and task wizard event, I can't figure out how to find the meta file to export the data or how to change the parameters on the vehicle tools event case. If i could get a video of someone doing it that would be great.
