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critical time step

problem regarding critical initial time step in poroelastic material during consolidation process.

Submitted by Xiaogai Li on
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pressure
Consolidation
poroelastic
Vermeer and Verruijt (1981)
critical time step

Dear all,

I have a problem regarding critical initial time step in poroelastic material during consolidation process.

As we know, for implicit integration method, it's unconditionally stable. But for the consolidation of poroelastic material,

there is a critical time step t_critical derived by Vermeer and Verruijt (1981), this has also been inclued in the abaqus software (http://129.25.22.58:2180/v6.7/books/exa/default.htm).

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