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Can someone help me send some suggestions about Altair software to the development team？
I mainly engage in structural analysis and multi-body dynamics analysis. As an engineer who frequently uses Altair simulation software, the transition from old interface to new interface has shown me a revolutionary change in CAE software. However, there are some small features that I think may require better development…
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Some learning questions about Motionview
q1:How to batch import points created in Hypermesh into Motionview? I know there was a tool called MD_Tools before, but it doesn't seem to work for me. I'm using the 2025 version q2:How to output points from an MDL and then import them into another MDL file？ q3:Does the bearing in the mechanical tool expansion package not…
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fmi2EnterInitializationMode error when run FMU(created from MotionView) in Simulink
When I created a simple FMU in MotionView and imported it to Simulink. Run it and errors shows, Simulink shows: An error occurred while running the simulation and the simulation was terminated Caused by: Error in supplied FMU: An error occurred in function 'fmi2EnterInitializationMode' for block 'Bucket20211/FMU' during…
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How to Set Motion Timing in MotionView
When applying velocity to parts in MotionView, I want to set the start time and end time for that velocity. Could you tell me how to do that? Please respond in Japanese or English.
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MotionSolveのSpring&Damperについて
MotionSolveでSpring & Damperを設定する時、 StiffnessとDampingの数値を Linearで直接、設定した時と Curvesで、数値一定のグラフで設定した時で 結果が異なります。 Curvesで設定した時は、Spring先端のmassが 大きく移動してしまいます。 両者の違いは何でしょうか。
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How to model Pin/Bearing load in Planet gear at MotionSolve?
While using Machinery extension to simulate Planetary gear drive at Motion Solve I've ran into following problem I'm interested in reaction force acting on bearing of planet gear in planetary gear drive which would be as drawing below While Planetary gear extension at Machinery tool is great since there is no body of…
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粒子のパラメータ設定に関する質問
現在，EDEM と Motion View を連携させて数値シミュレーションを行っています． 内容は，EDEM で粒子を容器内に充填し，Motion View で作成した物体をその上に落下させるといったものです． EDEM 側の接触モデルには Hysteretic Spring モデルを使用し，粒子材料にはシリコンゴムを想定しています． 文献に記載されている材料物性値（ヤング率，密度，摩擦係数など）を調べ，それらをそのまま EDEM の粒子パラメータとして入力して解析を行っているのですが，粒子を複数個容器に入れた状態で Motion View との連成解析を行うと，初期高度よりも高く跳ね返るなど，不自然な挙動が発生します．…
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MotionView: Road profile modeling based on ISO 8608 standard
https://community.altair.com/discussion/40104/webinar-improving-truck-ride-comfort-using-vehicle-simulations?utm_source=community-search&utm_medium=organic-search&utm_term=iso+%228608%22 I watched this webinar and I'm trying to perform the ride comfort analysis, but I’m facing some issues as follows: In the input section…
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Some confusion about BUSH settings in Motionview
I currently have a device that is mounted on a rubber spring. I plan to model it using a bush, but I found that during startup, the device will flatten the bush under its own gravity, which is not in bush with the actual working conditions of the device. How do I set it up and apply a preload to the bush to counteract…
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Exporting MotionView Simulation Results
Hello everyone, I've completed the kinematic simulation of the vehicle using MotionView. Now I want to export the overall slip rate of the vehicle during motion, rather than the slip of a single wheel. However, when exporting data in HyperGraph, I couldn't find the corresponding result data. Perhaps I don't know which…
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Ball joint force analysis using wheel force transducer data
Hi everyone, I’m part of the Baja SAE team at the University of Sherbrooke. Last semester, we were able to run our BAJA with a Wheel Force Transducer (WFT). Since we want to reduce the weight of our suspension subsystem, we’re looking for a way to use the data collected with our WFT test directly in Altair MotionSolve. The…
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Can I add objects with significant rubber deformation to Motionview？
I now want to simulate the deformation of the upper sieve plate during the operation of a vibrating screen. This upper sieve plate is made of polyurethane and can be equivalent to rubber. I want to simulate the tension and relaxation movement trend of this upper sieve plate during the movement process, so the deformation…
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motionviw&EDEM coupled simulation fails to output plt. file
Hello, I am running a motionviw&EDEM coupled simulation. I am changing the 'mesh coarseness for contacts' to do gird independence test. When the coarseness is 4 and 5, the simulation runs well. But when I change it to 7, It ran, but didn't output the final files like plt. file. See below figure. Any idea what is the…
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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…
