Wrinkles on Imported Character: FEM or Soft Body ?

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Hi,

I have imported character from Maya with walking animation. I would like to add some wrinkles to the skin while moving. I am considering Houdini Muscles here as the rigging was in Maya. So I am not sure if the workflow shall be in FEM or Soft Body. I am complete beginner in both FEM and Soft body but from what I read and saw so far I understand that there's a possibility to add wrinkles to the skin. I just need to figure out the correct workflow.

I tried to use the shelf tool for FEM and I saw my model collapsing or rather say melting in the ground and my animation.

Appreciate if someone here can point out the correct workflow.

Attachments:
Fem.hiplc (2.1 MB)

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Up! Appreciate the support.
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I'd go with the Houdini muscle system and skip FEM. I'm not particularly well-versed in the workflow, but I have set up basic muscles on an imported FBX rig. The jiggle/deform features are built in and fairly easy to understand. Essentially you connect muscles to your bones and then use the Muscle Displace shelf tool to deform the skin.
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Thanks for your advice. I am not considering muscles system in my workflow this time. If the character is covered in with clothes then there will be no use for muscles as most of the details will be hidden underneath the clothes. I am interested in FEM and would like to test FEM with facial expressions. How it would look and the impacts of it.
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