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Orthotropic viscoelasticity?


bw_composite
Posts: 124
Topic starter
(@bw_composite)
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Joined: 15 years ago

Hi All,

I routinely model a composite material smootheing it using classic mixture rules, hence defining a homogeneous orthotropic material.

Is there a way to introduce rate dependency into this approach in ANSYS?

I went thorugh the documentaion with poor results.

Thank you

Best Regards

Muzialis

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Jorgen
Posts: 3955
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(@jorgen)
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Joined: 3 years ago

I think the latest version of Abaqus supports that through anisotropic hyperelasticity + linear viscoelasticity. I am not sure if Ansys supports anisotropic viscoelastic materials yet. Anyone who knows more?

An option, as always, is to use an anisotropic viscoelastic user-material. I frequently do this with Abaqus, but it should work fine with Ansys as well.

- Jorgen

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bw_composite
Posts: 124
Topic starter
(@bw_composite)
Estimable Member
Joined: 15 years ago

Jorgen,

thanks for your reply.

I do not regretfully have nay experience in user defined materials. Might be a good occasion to start thinking about it and take my Fortran out of the lost things room.

Have anice Sunday

Muzialis

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Jay
Posts: 10
 Jay
(@Jay)
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Joined: 15 years ago

Hi,

anisotropic hyperelasticity AND viscoelasticity is not yet supported, only the isotropic case. This will be the case in v12 of ANSYS

Armin

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