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Viscoelastic material Model in COMSOL
Posted 2011/03/15 11:22 GMT-4 Structural Mechanics Version 4.1 10 Replies
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I am trying to model a Polymer behavior in COMSOL 3.5a.
I have a hyperelastic model of the polymer, but now I want to model it using viscoelastic material model.
I wanted to know how to obtain the parameters Gi and Ti for the table in viscoelastic material model in subdomain settings. I have creep test data (Force - Displacement curve) for a out of plane deformation of the polymer. Geometry is known.
Thanks,
Aseem
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Nagi Elabbasi
Veryst Engineering
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Now how can I calculate instantaneous shear modulus and corresponding relaxation time for Generalized Maxwell Model?
--
Md. Tariqul Islam
Department of Earth Science
University of Gothenburg, Sweden
tariqul.islam@gvc.gu.se
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I'm interested about Plate spreading model. If you have something to share please, knock me. Thanks.
Regards
Tariqul
-------------------
Md. Tariqul Islam
Department of Earth Science
University of Gothenburg, Sweden
tariqul.islam@gvc.gu.se
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I tried constraining one side of the solid sphere but still it doesnt show any deformation. I think the object is behaving like a linearly elastic model although it has been over ridden with visco elastic model. Can you please suggest what is wrong? Why is it not deforming? (what are proper parameters which will make it deform?)
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Nagi Elabbasi
Veryst Engineering
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I am trying to model a volcano with viscoelastic material. But I cannot find the linear viscoelastic material mode option in my interface (solid mechanics(solid)>material mode>). I am using COMSOL 5.0. Can you help me with it.
Bhuvan.
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Viscoelastic materials are available only if your license includes the Structural Mechanics Module. They are not available among the structural mechanics capabilities of the core COMSOL Multiphysics. More options are available if your license includes both the Structural Mechanics Module and the Nonlinear Structural Materials Module. See the attached exerpt from the online product specification chart (www.comsol.com/products/specifications/),
To determine whether your license includes either of those products, go to File > Used and Licensed Products.
Best,
Jeff
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Dear Aseem,
I am also trying to use viscoelastic materials in COMSOL. But I only found the one material type named "linear viscoelastic materials" under the "solid mechanics" category (COMSOL 5.2). I wonder could you please tell me where is the viscoelastic material type whose inputs are Prony parameters Gi and Ti? Many thanks.
Best regards
Hai
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