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Memory

Deformations (i.e. the deformation matrix $F$) can either refer to the previous time point ( -updated Lagrange formulation) or to time 0 ( -total Lagrange formulation).
In both cases, TOCHNOG composes the deformation tensor with a polar decomposition into $F = R U$ with $F$ the deformation matrix, $R$ the rotation matrix and $U$ the stretch matrix. In a -updated_without_rotation approximation, the rotation matrix is neglected (this saves CPU time). See also group_materi_memory.



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1999-04-23