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分析了残余压应力对裂纹闭合的影响机理，在此基础上建立残余应力场中裂纹扩展闭合力的预测模型，讨论了裂纹闭合的尺寸效应，将模型延伸至短裂纹和表面裂纹的范围．对形变强化组织影响闭合进行了讨论
The influence mechanism of residual compressive stress on crack closure is analyzed. Based on this, a prediction model of crack growth closing force in residual stress field is established. The size effect of crack closure is discussed and the model is extended to the range of short crack and surface crack. A discussion of the effect of deformation strengthening on the closure is discussed