finite element procedures by k j bathe
Post on 14-Jul-2015
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the partitioning of the original matrices is only a device to facilitate matrix manipulations and does not change any results.
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in linear finite element analysis three assumption is assumed: 1.strain-displacement matrix B is assumed to be constant 2.constant stress-stain matrix c 3.the boundary conditions remain unchanged
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why use logarithmic strain? is the almansi strain ok?
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in new-raphson method the most important point is the correct calculation of F from U and the evaluation of the tangent stiffness matrix is also important
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tensor decomposition can be accomplished in any other admissible coordinate system.
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