COMPUTER SIMULATION OF CREEP DAMAGE AT CRACK TIP IN SHORT FIBRE COMPOSITES  

作　　者：张双寅 蔡良武 

机构地区：[1]Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China

出　　处：《Acta Mechanica Sinica》1994年第3期282-288,共7页力学学报（英文版）

基　　金：The project supported by the National Natural Science Foundation of China ; the LNM of Institute of Mechanics,CAS

摘　　要：Creep damage at crack tip in short fibre composites has been sim- ulated by using the finite element method(FEM).The well-known Schapery non- linear viscoelastic constitutive relationship was used to characterize time-dependent behaviour of the material.A modified recurrence equation was adopted to accelerate the iteration.Kachanov-Rabotnov's damage evolution law was employed.The growth of the damage zone with time around the crack tip was calculated and the results were shown with the so-called 'digit photo',which was produced by the printer.Creep damage at crack tip in short fibre composites has been sim- ulated by using the finite element method(FEM).The well-known Schapery non- linear viscoelastic constitutive relationship was used to characterize time-dependent behaviour of the material.A modified recurrence equation was adopted to accelerate the iteration.Kachanov-Rabotnov's damage evolution law was employed.The growth of the damage zone with time around the crack tip was calculated and the results were shown with the so-called 'digit photo',which was produced by the printer.

关 键 词：creep damage VISCO-ELASTICITY finite element method short fibre composite computer simulation 

分 类 号：O175.29[理学—数学]