Numerical simulation of thermo-mechanical fatigue properties for particulate reinforced composites  

作　　者：RanGuo HuijiShi ZhenhanYao 

机构地区：[1]DepartmentofEngineeringMechanics,FML.TsinghuaUniversity,Beijing100084,China

出　　处：《Acta Mechanica Sinica》2005年第2期160-168,共9页力学学报（英文版）

基　　金：The project supported by the Special Funds for the National Major Fundamental Research Projects(2004CB619304);the National Natural Science Foundation of China(10276020 and 50371042);the Key Grant Project of Chinese Ministry of Education(0306)

摘　　要：In this paper, a two dimensional Voronoi cell element, formulated with creep, thermal and plastic strain, is applied for the numerical simulation of thermo-mechanical fatigue behavior for particulate reinforced composites. The relation between mechanical fatigue phases and thermal fatigue phases influences the thermo-mechanical fatigue behavior and cyclic creep damage. The topological features of micro-structure in particulate reinforced composites, such as the orientation, depth-width ratio, distribution and volume fraction of inclusions, have a great influence on thermo-mechanical behavior. Some related conclusions are obtained by examples of numerical simulation.In this paper, a two dimensional Voronoi cell element, formulated with creep, thermal and plastic strain, is applied for the numerical simulation of thermo-mechanical fatigue behavior for particulate reinforced composites. The relation between mechanical fatigue phases and thermal fatigue phases influences the thermo-mechanical fatigue behavior and cyclic creep damage. The topological features of micro-structure in particulate reinforced composites, such as the orientation, depth-width ratio, distribution and volume fraction of inclusions, have a great influence on thermo-mechanical behavior. Some related conclusions are obtained by examples of numerical simulation.

关 键 词：Particulate reinforced composites Thermo-mechanical fatigue property Numerical simulation Voronoi cell finite element MICRO-STRUCTURE 

分 类 号：TB33[一般工业技术—材料科学与工程] O346.2[理学—固体力学]