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identifying mass density in soil consolidation problem

identifying mass density in soil consolidation problem

identifying mass density in soil consolidation problem

(OP)
how ru everybody;
first i'm working in a research on behavior of grid foundation built on soft clay
so i used abaqus to analyze this model.
every thing is ok when using mass density (about=1)or less but when i used the real mass density(1820kg/m3) as wetted soil ,water content=40% & also that for concrete.
note: i'm using S.I.system units.
the messege error appears to need small minimum time increment than verified befor starting soil consolidation step and after geostatic step ofcours,
so i changed it tell(1e-37)and not enouf and more less. the program refused the time increment from the begining before start running.
please i need help and tried alot of ideaes.
i hope find my answer from you.
e.walla       

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