A class of Lagrangian mixed finite elements is presented for applications to 2D structural problems based on a damage constitutive model. Attention is focused on localization and regularization issues as compared with the correspondent behavior of Lagrangian displacement-based elements. A non-local regularization procedure of integral type is adopted. A predictor-corrector technique is used to solve the evolution problem of the damage variable. The proposed elements show superior performances for typical structural applications. (c) 2007 Elsevier B.V. All rights reserved.
Localization and regularization behavior of mixed finite elements for 2D structural problems with damaging material / R., Grimaldi; Addessi, Daniela; Ciampi, Vincenzo. - In: COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING. - ISSN 0045-7825. - STAMPA. - 197:1-4(2007), pp. 255-264. [10.1016/j.cma.2007.07.021]
Localization and regularization behavior of mixed finite elements for 2D structural problems with damaging material
ADDESSI, Daniela;CIAMPI, Vincenzo
2007
Abstract
A class of Lagrangian mixed finite elements is presented for applications to 2D structural problems based on a damage constitutive model. Attention is focused on localization and regularization issues as compared with the correspondent behavior of Lagrangian displacement-based elements. A non-local regularization procedure of integral type is adopted. A predictor-corrector technique is used to solve the evolution problem of the damage variable. The proposed elements show superior performances for typical structural applications. (c) 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
