A new analytical model for stress concentration around hard spherical particles in metal matrix composites
An analytical model for predicting the stress concentration around an elastic spherical particle in an elastic-plastic metal matrix was developed by using a strain gradient plasticity theory and a unit cell of finite dimension. The solution for the problem of a spherical particle embedded in an infinite matrix was obtained as a special case. The models based on classical elasticity and plasticity were also reduced from the current model. The new model can explain the particle size effect and account for composites with both dilute and non-dilute particle distributions. Numerical results are presented to illustrate the newly developed model.
X-L Gao M.W.Harris
Department of Mechanical Engineering, Texas A&M University, College Station,TX 77843-3123, USA
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
153-160
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）