INVESTIGADORES
HUESPE Alfredo Edmundo
artículos
Título:
On the strong discontinuity approach in finite deformation settings
Autor/es:
J. OLIVER; A.E HUESPE; M.D.G. PULIDO; E. SAMANIEGO
Revista:
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
Editorial:
JOHN WILEY & SONS LTD
Referencias:
Año: 2003 vol. 56 p. 1051 - 1082
ISSN:
0029-5981
Resumen:
Taking the strong discontinuity approach as a framework for modelling displacement discontinuities and strain localization phenomena, this work extends previous results in innitesimal strain settings to finite deformation scenarios.By means of the strong discontinuity analysis, and taking isotropic damage models as target continuum (stressstrain) constitutive equation, projected discrete (tractionsdisplacement jumps) constitutive models are derived, together with the strong discontinuity conditions that restrict the stress states at the discontinuous regime. A variable bandwidth model, to automatically induce those strong discontinuity conditions, and a discontinuous bifurcation procedure, to determine the initiation and propagation of the discontinuity, are briefly sketched. The large strain counterpart of a non-symmetric finite element with embedded discontinuities, frequently considered in the strong discontinuity approach for infinitesimalstrains, is then presented. Finally, some numerical experiments display the theoretical issues, and emphasize the role of the large strain kinematics in the obtained results
