Stabilized mixed finite elements with embedded strong discontinuities for slip line modeling

P.J. SÁNCHEZ; V. SONZOGNI; A.E. HUESPE; J. OLIVER

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME

ASME-AMER SOC MECHANICAL ENG

Lugar: New York; Año: 2006 vol. 73 p. 995 - 1004

0021-8936

A stabilized mixed finite element with elemental embedded strong discontinuities for shear band modeling is presented. The discrete constitutive model, representing the cohesive forces acting across the shear band, is derived from a rate-independent J2 plastic continuum material model with strain softening, by using a projection-type procedure determined by the Continuum-Strong Discontinuity Approach. The numerical examples emphasize the increase of the numerical solution accuracy obtained with the present strategy as compared with alternative procedures using linear triangles.