1,721,040 research outputs found
A finite element model for the Koiter nonlinear analysis of composite thin-walled structures
No full textMixed finite elements for the elastoplastic analysis of 2D continua
Full text linkThe paper aims to formulate assumed stress finite elements for the analysis of elastoplastic structures. The interpolations of the displacement and stress fields, typical of the elastic version of the mixed elements, is enriched with the FEM representation of the plastic strain field. The formulation of the elastoplastic problem of the element is then established, consistently, with respect to its variational basis based on the weak enforcement of the compatibility condition. Its correlation with the Haar–Karman principle leads to a minimization problem of a quadratic functional subjected to a linearized form of the plastic admissibility constraints
Discrete planes formulation of mixed finite elements for the analysis of 2D elasto-plastic solids
No full text
Attractive post-critical paths and stochastic imperfection sensitivity analysis of nonlinear elastic structures within an FEM
No full text
- …
