A mixed stabilized finite element formulation for strain localization analysis
Document typeConference report
Rights accessOpen Access
This work exploits the concept of stabilization techniques to improve the behaviour of either mixed or pu/mixed u/εlinear/linear triangular elements when strain localization analysis is required. Different stabilization methods suitable for either Mode-I or Mode-II structural failure are proposed and compared to check the global stability of the corresponding discrete finite element formulation. Both elasto-J2-plastic and isotropic damage models have been used for the constitutive behaviour of the material. In both cases, exponential softening has been introduced in the post-peak regime. The results obtained do not suffer from spurious mesh-size or mesh-bias dependence, comparing very favorably with those obtained with standard approach.
CitationChiumenti, M.; Cervera, M.; Agelet De Saracibar, C. A mixed stabilized finite element formulation for strain localization analysis. A: Pan-American Congress of Applied Mechanics. "11th Pan-American Congress of Applied Mechanics, PACAM XI: January 04-08, 2010, Foz do Iguaçu, Paraná, Brazil: proceedings". Foz do Iguaçu, Paraná: 2010, p. 1-6.