Applied Mathematics and Mechanics (English Edition) ›› 1994, Vol. 15 ›› Issue (1): 61-69.

• Articles • Previous Articles     Next Articles

A STUDY OF J-INTEGRAL OF THE ORTHOTROPIC COMPOSITE MATERIAL

Wang Ai-qin, Feng Bao-lian, Yang Wei-yang   

  1. Taiyuan Heavy Machinery Institute, Taiyuan
  • Received:1992-11-26 Online:1994-01-18 Published:1994-01-18

Abstract: The relation between J-integral near model I crack tip in the orthotropic plateand displacement derivative is derived in this paper. Meanwhile,Ihe relation betweenstress intensity factor K1 and displacement is also given in this paper.With stickingfilm moire interferometry method, the three-point bending beam is tested,thus thevalues of J-integral and K1 can be obtained.from the displacement field,and then thetruth of relation formula between J-integral and K1 in the orthotrtopic compositematerials is experimentally verified.

Key words: orthotropic composite material, J-integral, sticking film moireinterferometry

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