Recent content by soildynamics

Thank you xerf

Please read my explaination and give me your physical opinion I have total load applied on a mixture porous medium (Soil solid matrix and water), which is partially drained. Initially, when the dW/dt>0, the total load is being carried by both the solid matrix and water. However, most of that...

No my material (soil) only takes compression

I am running ElastoPlastic analysis. With application of the load, the external work of the whole model at a specific time reaches a peack and starts to become a decreasing function of time, although the load is increasing. After that the external work becomes a decreasing function of time. I...

not really ... but what is observed is interesting decreasing the external work while the applied load is increasing could means that the applied load on the porous medium is not producing work any more... can you physically interpret that..? does that flag failure..?

-I am running ElastoPlastic analysis. With application of the load, the external work of the whole model(History Output) at a specific step reaches a peack and starts to become a decreasing function of time, although the load is increasing. In the following steps the external work becomes a...

Thanks I already got convincing answer regarding this thread

thanks Martin FLAC can handle 3D.. please review your info Both can handle the features of my model but (Large Defo, Elastoplastic and others) But I am saying which is better when the size of the problem becomes very large

What is the maximum number of DOFs that can be handled by ABAQUS ? Is there any minimum machine memory requirement related to this number? Are there any computational ramifications (other than long computational time) that can be expected from using huge number of elements? As far as this point...

No it is not as I have a porous media that is not supported by Explicit

I am using ABAQUS standard (Implicit) to model elastoplastic materials. However, because I have materials failure (plasticity cannot converge at some points) the model cannot converge. What should I do in this case

If the determinant of a matrix is positive , does that mean that the matrix must be positive definite

thanks bigh it is valuable stuff.

VAd and theCorkster : thanks for your valuable refernces By the way I just put 90% as an example numbetr. My actual required RD that is reportedly acceptable for precluding liquefaction of the materials I have is 65 %.

Please see thread274-194593