正交异性复合材料J积分的研究

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A Study of J-lntegral of the Orthotropic Composite Material

摘要: 本文推导了正交异性复合材料板Ⅰ型裂纹J积分与位移导数的关系式,同时给出了应力强度因子K_Ⅰ与位移的关系式,采用贴片云纹干涉法对三点弯曲粱进行了测试。由云纹图的位移场求出了J与K_Ⅰ值,进而验证了正交异性复合材料板J与K_Ⅰ的关系式的正确性。
- 正交异性复合材料 /
- J积分 /
- 贴片云纹干涉
Abstract: The relation between J-integral near model I crack tip in the orthotropic plate and displacement derivative is derived in this paper. Meanwhile,the relation between stress intensity factor K₁ and displacement is also given in this paper.With sticking film moire interferometry method,the three-point bending beam is tested,thus the values of J-integral and K₁ can be obtained.from the displacement field,and then the truth of relation formula between J-integral and K₁ in the orthotrtopic composite materials is experimentally verified.
- orthotropic composite material /
- J-integral /
- sticking film moire interferometry

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