摘要: |
本文用J积分的理论对存在残余应力场合的情况进行了研究。提出了一个有效的J值作为断裂基准的判据,即Jc=J有效。实验证明,对有残余应力或预载荷存在的试样,由上述理论推导的断裂载荷与实际试验的结果是相符合的。 |
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A STUDY OF J-INTEGRAL FOR FRACTURE CRITERION ON THE ADAPTABILITY TO CASES IN WHICH RESIDUAL STRESSES EXIST |
Xu Xiao
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South China Institute of Technology
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Abstract: |
This paper states the investigations conducted by applying the theory of J-integral to the cases in which residual stresses exist.An effective value of J is adopted as an index symbolizing the fracture criterion.It appears as Jc=Jeffective Experimental results indicated that the values of fracture load derived theoretically from the above relation were in agreement with those obtained in actual tests for samples in which residual stresses or preloads exist. |
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