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Unsymmetric Direct Solver

Submitted by Karma Yonten on

Hi all,

I'm looking for an efficient solver written in Fortran (preferably fortran 90 or later versions) to solve unsymmetric system of equations using finite element method.  I've an in-house FE code which lacks an efficient unsymmetric solvers (like skyline and sparse solvers). I found some symmetric solver subroutines online, but couldn't find any for unsymmetric case. Any suggestions and recommendations will be much appreciated.

Karma 

The factory idiom and material models

Submitted by Biswajit Banerjee on

I'm leaving the US in a couple of days and will probably take a hiatus of a few months from iMechanica.  Before I leave, I want to tell you about a C++ idiom that eases the implementation and use of multiple material models in a computational mechanics code.

Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch to slip bonds in cell-adhes

Submitted by Yujie Wei on

In order to achieve a wide variety of biological phenomena, the abilities of cells to contact effectively and interact specifically with neighboring media play a central role. It is known that cells can sense the chemical and mechanical properties of surrounding systems and regulate their adhesion and movement through binding protein molecules within cell membrane. The kinetics of binding molecules interacting with ligands is of great interest in biophysical society. There are lots of discussions and contributions on cell mechanics from our mechanical society, e.g.

Modelling of bi-layer system of slabs using ABAQUS.

Submitted by Sathish Konduru on

 Hi everyone,



I am working on a project which deals with the bi-

layer system of slabs(i.e., two layers of different concretes bonded

together with a cement grout). The only loading case is the

temperature, i.e, due to the high room temperature different

concretes will conduct different temperatures and due to which the

stresses are developed and hence due to warping the edge curling and

delaminations occur.



My questions are;