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Confused about few materials inside COMSOL
Posted 2 nov. 2017, 02:36 UTC−4 General, Introduction, Materials 4 Replies
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Dear Sir, I am using following material for simulation of my desired geometry. Soil, Concrete, Steel, Cast Iron, Polymers, Rubber When I go inside the material library I get confuse which type of sand, steel, polymer or rubber i should assign. Since I know basic property of my material like Young's Modulus, Poission ratio, Density but don't know how to select appropriate material from material library. Mostly Soil portion make me more confuse. As I want to use sand, silt and clay but regarding sand I find few material but for silt and clay i did not find any material. Please help me in this regard.
Thank you
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Right-click Materials, select Blank Material. Add the properties of interest from the list under Basic Materials. Finish up by giving the material an informative name. Repeat for your other materials.
D.W. Greve DWGreve Consulting
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Muhammad,
It sounds like you work with geomechanical applications. Please make sure that your license includes the optional Geomechanics Module, as that is the one which includes material laws suitable for that field (Cam-Clay for clays, etc, see https://www.comsol.com/geomechanics-module ), and in particular plasticity with non-associative flow rule. See e.g. https://www.comsol.com/blogs/yield-surfaces-plastic-flow-rules-geomechanics/
If all you want to do is specify a linear elastic small deformation Hooke's law behavior defined entirely by Poisson ratio and Young's Modulus (plus the density in the dynamic case), then no optional product is necessary and you can add those properties as D.W. describes above.
Best,
Jeff
-------------------Jeff Hiller
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Right-click Materials, select Blank Material. Add the properties of interest from the list under Basic Materials. Finish up by giving the material an informative name. Repeat for your other materials.
D.W. Greve DWGreve Consulting
Thank you very much.
Please login with a confirmed email address before reporting spam
Muhammad,
It sounds like you works with geomechanical applications. Please make sure that your license includes the optional Geomechanics Module, as that is the one which includes material laws suitable for that field (Cam-Clay for clays, etc, see https://www.comsol.com/geomechanics-module ), and in particular plasticity with non-associative flow rule. See e.g. https://www.comsol.com/blogs/yield-surfaces-plastic-flow-rules-geomechanics/
If all you want to do is specify a linear elastic small deformation Hooke's law behavior defined entirely by Poisson ratio and Young's Modulus (plus the density in the dynamic case), then no optional product is necessary and you can add those properties as D.W. describes above.
Best,
Jeff
Thank you for your help