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Expanded PTFE material model

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srinathcs
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I am new to PolyUMod and was wondering if there are any material models for expanded PTFE foam materials.

 

Cheers

Srinath

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jbRektor
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I have done a lot of work on expanded PTFE, and there are good material models for this interesting material in PTFE. Best material model will depend on the details of your material. I typically use the TNV model or the PN model for this material class.

/Jorgen

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srinathcs
(@srinathcs)
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@jbrektor

Dear Jorgen, 

Thanks for quick response. For my application, this material is used only in compression and is it possible to calibrate the model with just compression curves ? Also is there a paper for reference, either yours or in the open literature. 

 

Cheers

Srinat

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srinathcs
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Another question. It seems as if the TNV and TN models are incompressible in the plastic regime, since they are treated as viscous fluids. Is this correct ? If not can you point me to some relevant literature that makes this compressible

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