Localization and regularization behavior of mixed finite elements for 2D structural problems with damaging material

✍ Scribed by R. Grimaldi; D. Addessi; V. Ciampi

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 439 KB
• Volume: 197
• Category: Article
• ISSN: 0045-7825
• DOI: 10.1016/j.cma.2007.07.021

✦ Synopsis

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.