| 残余压应力场中裂纹扩展的闭合模型 |
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| 引用本文： | 李航月,胡奈赛,何家文,周惠久.残余压应力场中裂纹扩展的闭合模型[J].金属学报,1998,34(8):847-851. |
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| 作者姓名： | 李航月 胡奈赛 何家文 周惠久 |
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| 作者单位： | 西安交通大学金属材料强度国家重点实验室!西安，710049 |
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| 基金项目： | 国家自然科学基金!59471045 |
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| 摘 要： | 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
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| 关 键 词： | 残余应力 裂纹 闭合 扩展 尺寸效应 形变 金属 |
| 收稿时间： | 1998-08-18 |
| 修稿时间： | 1998-08-18 |
AN ANALYTICAL MODEL OF COMPRESSIVE RESIDUAL STRESS EFFECT ON CLOSURE |
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| LI Hangyue,HU Naisai,HE Jiawen,ZHOU HuijiuCorrespondent: HE Jiawen,professor Tel: ,Fax: ,E-mail: jwhe xjtudu. cn..AN ANALYTICAL MODEL OF COMPRESSIVE RESIDUAL STRESS EFFECT ON CLOSURE[J].Acta Metallurgica Sinica,1998,34(8):847-851. |
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| Authors: | LI Hangyue HU Naisai HE Jiawen ZHOU HuijiuCorrespondent: HE Jiawen professor Tel: Fax: E-mail: jwhe xjtudu cn |
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| Affiliation: | LI Hangyue,HU Naisai,HE Jiawen,ZHOU Huijiu(State Key Laboratory for Mechanical Behaviour of Metallic Materialas,Xi'an Jiaotong University,Xi'an )Correspondent: HE Jiawen,professor Tel: (),Fax: (),E-mail: jwhe xjtudu. cn. |
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| Abstract: | analytical model for fatigue crack growth rate prediction is proposed based on the function of compressive residual stress on crack closure and the experimental results published in the literature. Using the proposed closure model, the crack growth rates of long crack, through-thickness short crack and surfaCe short craCk within a compressive residual stress field show fairly good agreement with the experimental results. |
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| Keywords: | residual stress crack closure crack propagation |
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