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MotionSolveで作成したジオメトリに対してEDEM内で粒子を配置し，MotionSolveで連成シミュレーションを実行する方法について
現在，Altair MotionSolveとEDEMを用いて連成シミュレーションを試みております． MotionSolve側で剛体ジオメトリを作成し，それをEDEMにインポートして粒子をジオメトリ内部に配置したいと考えております． その上で，粒子が配置された剛体をMotionSolve側でシミュレーションしたいと考えております． 以下の点についてご教示いただけますでしょうか…
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MotionSolve における接触で薄いゴムシートが必ず貫通してしまう問題について
現在、以下の条件で衝突解析を行っていますが、落下してきた物体が地面に固定の薄いゴムシート（10mm ）を必ず貫通してしまい困っています。どこを見直せばよいかご教示ください。 ■ モデル条件 落下体：質量 1.2 kg の剛体立方体 自由落下高さ：0.5 m 接触面積：一辺 53.18 mm の正方形 ゴムシート材性：ヤング率 27 MPa ■ Contact 接触設定 Stiffness：K = 8000 N/mm Damping：40 N·s/mm Exponent：n = 1.0／1.5（両方試しました） Penetration depth (dmax)：0.1 mm Time step：Auto…
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MotionSolve Output Requests to soft soil simulation
Hi all, I want to get the graphical output of these parameters, what steps should I go through, thanks a lot!
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ADAS Simulation Under Severe Vibrations using MotionSolve and FEKO
Foreword I’m excited to share the innovative work of my colleagues, Nadine Kåmark and Christoph Mäurer, who have tackled the complex challenge of automotive radar integration under severe vibrations. Their research demonstrates how Altair’s HyperWorks suite can model and analyze the impact of dynamic conditions, such as…
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motionview soft soil
Hi all, I am having some problems with soft soil simulation using motionview2024. I have created a ramp terrain using my own edited .crg file, but after the simulation run is completed as shown below I am unable to visualise the road deformation when using hyperview post-processing, there is no option for road deformation…
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How to output force of a User Subroutine Bushing (difined by GFOSUB)?
Hello everyone, I difined a Bushing with user subroutine GFOSUB in Python, the input is Bushing velocity and displacement and returns six-point force, like: def GFOSUB(id, time, par, npar, dflag, iflag): … return [FX, FY, FZ, MX, MY, MZ] The simulation performed correctly, but the output of Bushing force is zero. As shown…
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motionview soft soil modeling
Hi everyone, I am having some problems with soft ground vehicle simulation using motionview2024, I followed the tutorial guidelines for soft ground modelling and used the crg file to write the terrain, but I got an error when loading the file, then I tested it using the crg file in the file repository, but there was no…
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How does input 'locj'/'loci' works in User Subroutine like 'cnfsub'?
Hello Everyone In MotionSolve Reference Guide, the CNFSUB has a attribute names 'LOCI', and is descriped as follows: LOCI [double precision]: An array that contains the position vector of the contact point on I_GRAPHICS_ID with respect to the origin of the I_GRAPHICS_ID reference marker, resolved in the I_GRAPHICS_ID…
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HyperView - Force vectors not appear (N/A) - MotionView model
Hello, I'm using Motion View 2022.1. I have a multi-body system with a few external forces applied. After simulating the model, in HyperView -> Animation, I tried to plot the force vectors, but they weren't appearing and I got the value: N/A. The other internal forces in the system appear as vectors. For the Animation, i…
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How to model CV joint between two solid flanges?
How to model CV joint between two solid flanges as indicated in the above pic?
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Road PCD Marker Broken
Hello all, I am trying to use a custom PCD road by following the various guides. But the .rdf file when importing into Motionview has this weird spike that seems to be where the road marker is. Is there a way that I can fix this because the Hypermesh part looks normal, also the .fem file seems to look like others I have…
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Oscillations at lean angle
I'm using motionview with vehicle tools, using the motorcycle and events. I have a problem of oscillations when trying to maintain a certain constant lean angles. I've tried a lot changing the PID controllers but cannot get rid of the problem, any suggestions? (it happens at any lean angle, it is not a consequence of limit…
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Motionsolve crashes with crg file
I'm using the vehicle tools motorcycle and events. Simulations usually works but lately, and i did not have this problem in the past, when I start a simulation with a crg file, the simulation doesnt start and motionview closes. Might it be a problem with the 2025 release (I previously used the 2024 when i didnt have…
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Need help for Single Wheel Analysis of front end
Hi, I am new to Altair Motionview and need help in the project I am doing. My goal is to generate kinematic results for the single wheel using the task wizard, the simulations runs good at steering angle=0 (default). Further, I want to do the analyses for different steering angles (Eg. -100, 50, 0, 50, 100 degs) and…
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Implementing An Nonlinear Lower Control Arm - MotionSolve OptiStruct Co-Simulation.
Overview: In engineering and manufacturing, the durability of parts is a critical factor that directly influences the safety, performance, reliability, and cost-effectiveness of products. Determining how long a component can function under specific conditions without failure is essential for ensuring product longevity,…
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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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Problem with KnC event
Hi, I've created a model that works well for simulating dynamical events. However, when I switch to a kinematic simulation, it becomes very slow and doesn't simulate correctly. I’m not receiving any errors or warnings, so I’m unsure what the issue might be. Thank you in advance for your help. Have a great day! Best regards
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Creating a Shimable Suspension Model using MotionView
Overview: Adjusting suspension angles is crucial for optimizing vehicle handling, tire wear, and overall performance. The ability to customize the camber, caster, and toe angles of your suspension effectively can be the difference between first or last place when it comes to motorsport. For this purpose, a modified front…
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Still stuck on EDEM–MotionSolve coupling — need help understanding full setup!
I’ve been trying to follow the official tutorial videos and documentation to set up a co-simulation between Altair EDEM and MotionSolve, but I’m still confused about some key parts. For example: How exactly do you export geometries from MotionView so they show up correctly in EDEM? Do I need to manually set the…
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Motion Viewにおけるパラメータ調整方法
現在，MotionViewを用いて衝突吸収機構のシミュレーションモデルを構築しており，シミュレーション結果を確認しながら，減衰や接触力の挙動を検証しています． 相談したい点 ① ゴムシート（SGNB）とアルミ合金容器の接触設定について 質量(約３ kg)を持つ構造体が0.5 m高さから落下し，SGNB製のゴムシートに着地（着地面は）する構成です．接触対象はSGNBゴムとA6016-T6相当のアルミ容器で，ゴムは固定，容器側は落下側です．MotionViewの Contact 機能を用いて，Impactモデルにより接触を定義しています． 相談内容：…
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Curve for motion is not working
ERROR: Processing data for Spline [id=301001]. I have a spline which i have given as an input to a motion. But the above error is showing up. Please help, i have attached the mdl file
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Please help me in MBD of this step climbing trolley, especially motion planning.
I have made the joints and contacts. I only need help in motion planning. ANy motion I give, some weird thing is happening- either its not moving at all or falling down the platform. I have given the gravity also properly. It would be great help if someone can guide me through this.
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Camera/view following car during simulation
Hi, I've seen on several Altair website pages and community posts—such as the one about the Spa racetrack (https://community.altair.com/discussion/35999/racetrack-performance-testing-using-motionsolve), that they include a GIF showing a camera following the car. I've been researching how to achieve this effect, but I…
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Error when running simulation
I'm working on a project that involves performing the Double Lane Change event. After building the vehicle model, I made sure there were no errors, and then I configured the Altair Driver and the event with the specific parameters I needed. However, when I click Run, the simulation stops immediately before starting,…
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Doubts about mbd simulation on fsae models
Hi, i'm a beginner at mbd simulations, and I want to understand some things about motionsolve and the fsae model that altair gives to us. I imported the standard model, but it doesn't match our CAD model, so i'm wondering if there is a way to import our assembly to this model, or even to motionsolve somehow? Or, how can I…