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How to use rigidBodyMeshMotion in OF4.x on three rigid bodies connected by joints?

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Old   August 23, 2016, 10:47
Default How to use rigidBodyMeshMotion in OF4.x on three rigid bodies connected by joints?
Yuanchuan Liu
Join Date: Oct 2012
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Hi all,

I have been trying to model three rigid bodies connected by joints in OF4.x with the help of the new rigidBodyMeshMotion solver but do not know how I should set up the case, especially the constant/dynamicMeshDict. My problem is rather simple: three bodies are connected by rotational joints as can be seen in the attached threebody.jpg. I apply a tensioned spring on body1 so that when the simulation starts, body1 would move due to the spring tension while other bodies should follow. However, using my current constant/dynamicMeshDict attached with the moveDynamicMesh utility, mesh is largely distorted in a bad way as shown in mesh.jpg. Even the initial body shape cannot be preserved!

I cannot find much information on this new mesh motion solver. Has anyone ever tried it?

Any help is appreciated.

Best wishes,

Yuanchuan Liu
Attached Images
File Type: jpg threebody.jpg (25.0 KB, 16 views)
File Type: jpg mesh.jpg (204.9 KB, 15 views)
Attached Files
File Type: txt dynamicMeshDict.txt (2.6 KB, 7 views)

Last edited by SailorLiu; August 23, 2016 at 10:49. Reason: Specify which utility is applied.
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