Experimental analysis of crack tip fields in rubber materials under large deformation  

作　　者：Xia Xiao Hai-Peng Song Yi-Lan Kang Xiao-Lei Li Xiao-Hua Tan Hao-Yun Tan 

机构地区：[1]Department of Mechanics,Tianjin University,300072 Tianjin,China [2]School of Mechanical Engineering,Tianjin Polytechnic University,300387 Tianjin,China [3]Hebei University of Technology,300401 Tianjin,China

出　　处：《Acta Mechanica Sinica》2012年第2期432-437,共6页力学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (10732080 and 11102134)

摘　　要：A three-nested-deformation model is proposed to describe crack-tip fields in rubber-like materials with large deformation. The model is inspired by the distribution of the measured in-plane and out-of-plane deformation. The in- plane displacement of crack-tip fields under both Mode 1 and mixed-mode （Mode I-II） fracture conditions is measured by using the digital Moir6 method. The deformation character- istics and experimental sector division mode are investigated by comparing the measured displacement fields under differ- ent fracture modes. The out-of-plane displacement field near the crack tip is measured using the three-dimensional digital speckle correlation method.A three-nested-deformation model is proposed to describe crack-tip fields in rubber-like materials with large deformation. The model is inspired by the distribution of the measured in-plane and out-of-plane deformation. The in- plane displacement of crack-tip fields under both Mode 1 and mixed-mode （Mode I-II） fracture conditions is measured by using the digital Moir6 method. The deformation character- istics and experimental sector division mode are investigated by comparing the measured displacement fields under differ- ent fracture modes. The out-of-plane displacement field near the crack tip is measured using the three-dimensional digital speckle correlation method.

关 键 词：Crack-tip field. Large deformation Sector divi- sion mode. Three-nested-deformation model- Digital Moir6 method 

分 类 号：O346.1[理学—固体力学] TQ336.42[理学—力学]