By Betsch P., Stein E.

Substitute formulations of isotropic huge pressure elasto-plasticity are offered that are specially well matched for the implementation into assumed pressure parts. in line with the multiplicative decomposition of the deformation gradient into elastic and plastic elements 3 specific eigenvalue difficulties regarding the reference, intermediate and present configuration are investigated. those eigenvalue difficulties arc attached through similarity adjustments which shield the eigenvalues. They play an immense function within the next improvement of other constitutive formulations and the corresponding finite point implementation. The constructed constitutive strategies depend upon the correct Cauchy-Green tensor, or equivalently at the Green-Lagrangian pressure tensor, instead of the deformation gradient. as a result, they are often utilized on to assumed pressure components. particularly, we're curious about effective low order shell components for which the assumed pressure process has confirmed to be tremendous strong to beat spurious locking results.

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