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soils analysis of a biphasic tissue in 3D

soils analysis of a biphasic tissue in 3D

soils analysis of a biphasic tissue in 3D

(OP)
My goal is to run a soils analysis as per this research article. Please see the attached INP. All parameters (except one) were acquired from this paper. However, the geometry is simple. C3D8PH elements are used.

I am noticing a warning message WarnNodeICDef - initial conditions not uniquely defined for almost all nodes. I guess I can understand why that must happen and, perhaps, even fix that issue.

Also, looking at the job diagnostics (residuals for displacement, pore liquid pressure fields, and pressure stress constraint) makes me think that either I am missing something during setting up of the step/analysis or the boundary conditions.

I do not observe a typical creep-like displacement curve and also there is noise in the pressure stress, fluid volume ratio and the void ratio.

http://www.eng-tips.com/faqs.cfm?fid=376

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