论文信息 - A mixed finite element for the analysis of large inelastic strains

A mixed finite element for the analysis of large inelastic strains

A 4-node element with 1 integration point is developed for the analysis of elastoplastic large strains. It is based on the Hu-Washizu principle and uses a co-rotational formulation. Special care is taken to avoid spurious zero-energy modes and incompressibility locking. This element successfully passes the large strain patch test. It proves to be accurate and computationally very cheap.

P. Jetteur | S. Cescotto

[1] R. D. Krieg,et al. Accuracies of Numerical Solution Methods for the Elastic-Perfectly Plastic Model , 1977 .

[2] J. M. Kennedy,et al. Hourglass control in linear and nonlinear problems , 1983 .

[3] J. C. Simo,et al. Consistent tangent operators for rate-independent elastoplasticity☆ , 1985 .

[4] E. P. Popov,et al. Accuracy and stability of integration algorithms for elastoplastic constitutive relations , 1985 .

[5] T. Belytschko,et al. Efficient implementation of quadrilaterals with high coarse-mesh accuracy , 1986 .

[6] B. C. Noh,et al. New improved hourglass control for bilinear and trilinear elements in anisotropic linear elasticity , 1987 .

[7] Ted Belytschko,et al. Nonlinear versions of flexurally superconvergent elements , 1988 .