A new method for the evaluation of the elastoplastic algorithmic tangent stiffness is presented. The formula is based on a simple geometric argument and does not involve matrix inversions. For regular yield surfaces we provide an explicit expression which is sufficiently approximate and computationally efficient and exact for homothetic yield surfaces such as in von Mises plasticity criterion.
On the Evaluation of the Elastoplastic Tangent Stiffness / Romano, Giovanni; Barretta, Raffaele; Sellitto, Carmen. - STAMPA. - 2:(2005), pp. 1118-1121.
On the Evaluation of the Elastoplastic Tangent Stiffness
ROMANO, GIOVANNI;BARRETTA, RAFFAELE;SELLITTO, CARMEN
2005
Abstract
A new method for the evaluation of the elastoplastic algorithmic tangent stiffness is presented. The formula is based on a simple geometric argument and does not involve matrix inversions. For regular yield surfaces we provide an explicit expression which is sufficiently approximate and computationally efficient and exact for homothetic yield surfaces such as in von Mises plasticity criterion.File in questo prodotto:
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