Effect of surface energy on the size-dependent yield criterion of nanoporous materials under complex stress states
Within a micromechanical framework,the effect of surface energy is taken into account to explore the size-dependent yield criterion of nanoporous materials under complex stress states.A theoretical picture of the yield behavior on an octahedral plane is illustrated as functions of the surface properties and void size.The prominent size dependence of the yield criterion of nanoporous materials highlights the importance of the surface effect in analyzing the strength of nanostructured materials.The results demonstrate a fundamental framework to extend continuum strength theories to the nanoscale with substantial surface effect,which may be useful for evaluating the mechanical integrity of nanostructured materials.
Nanoporous materials Yield criterion Surface effect Size dependence
Liujuan Zhu Wenzhong Cai Shantung Tu
Shanghai Institute of Technology, Shanghai 201418, China Nanjing University of Technology, Nanjing 210009, China Nanjing University of Technology, Nanjing 210009, China ;East China University of Science and Techno
国际会议
台湾
英文
15-19
2011-12-11（万方平台首次上网日期，不代表论文的发表时间）