Effect of Surface Energy on the Size-Dependent Yield Criterion of Nanoporous Materials under Complex Stress States

Liu Juan Zhu; Wen Zhong Cai; Shan Tung Tu

doi:10.4028/www.scientific.net/AMM.121-126.15

Paper Titles

Preface and Organizing Committee

A Study on Processing Map and Flow Stress Model of AZ80 Magnesium Alloy Forming at Elevated Temperature
p.3

A Study on Vacuum Diffusion Bonding of as-Extruded AZ31 Magnesium Alloy
p.10

Effect of Surface Energy on the Size-Dependent Yield Criterion of Nanoporous Materials under Complex Stress States
p.15

An Analytic Solution of Length-Limited Thin-Walled Cylindrical Shells under Non-Axisymmetric Uniform Line Load and Concentrated Load
p.20

Analysis of Traction Behavior of the High-Speed Lubricating Grease 7007 by the Correctional T-J Model
p.27

Analysis on the Detection Capacitance of Comb Micro-Machined Gyroscope
p.33

Bond Strength Analysis among Layers of Grinding Wheel
p.38

Buckling Behavior of Clamped Laminated Composite Cylindrical Shells under External Pressure Using Finite Element Method
p.43

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 121-126Effect of Surface Energy on the Size-Dependent...

Effect of Surface Energy on the Size-Dependent Yield Criterion of Nanoporous Materials under Complex Stress States

Abstract:

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.