An extension of Gurson model incorporating interface stresses effects

作者：Dormieux L^*; Kondo D

来源：International Journal of Engineering Science, 2010, 48(6): 575-581.

DOI：10.1016/j.ijengsci.2010.01.004

• Nanoporous materials
• Micromechanics
• Surface stress
• Interfaces
• Ductile failure
• Gurson model

The classical Gurson model for ductile porous media is extended to incorporate the surface/interface stresses effect at the nano-scale. For capillary forces, the yield surface is shown to be obtained by a mere translation of Gurson one. For interface stresses obeying a von Mises criterion, the parametric equations of the yield surface are derived. The magnitude of the interface effect is proved to be controlled by a non dimensional parameter depending on the voids characteristic size.

• 出版日期2010-6