INVESTIGADORES
HUESPE Alfredo Edmundo
artículos
Título:
A finite strain, finite band method for modeling ductile fracture
Autor/es:
A.E. HUESPE, A. NEEDLEMAN, J. OLIVER, P.J. SANCHEZ
Revista:
INTERNATIONAL JOURNAL OF PLASTICITY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2012 vol. 28 p. 53 - 69
ISSN:
0749-6419
Resumen:
We present a finite deformation generalization of the finite thickness embedded discontinuityformulation presented in our previous paper (Huespe at al., Int. J. Plast., 25, 2349,2009). In this framework the transition from a weak discontinuity to a strong discontinuitycan occur using a single constitutive relation which is of importance in a range of applications,in particular ductile fracture, where localization typically precedes the creation ofnew free surface. An embedded weak discontinuity is introduced when the loss of ellipticityis met. The resulting localized deformation band is given a specified thickness whichintroduces a length scale thus providing a regularization of the post-localization response.The methodology is illustrated through several example problems emphasizing finite deformationeffects including the development of a cup-cone failure in round bar tension
