| 幂硬化弹塑性-刚性界面Ⅲ型定常扩展裂纹尖端的渐近场 |
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| 引用本文： | 唐立强,姜民政,刘长海.幂硬化弹塑性-刚性界面Ⅲ型定常扩展裂纹尖端的渐近场[J].上海力学,2002,23(2):182-188. |
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| 作者姓名： | 唐立强 姜民政 刘长海 |
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| 作者单位： | 哈尔滨工程大学建筑工程学院，哈尔滨工程大学建筑工程学院，哈尔滨工程大学建筑工程学院 哈尔滨 150001，哈尔滨 150001，哈尔滨 150001 |
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| 基金项目： | 黑龙江省自然科学基金(2001年) |
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| 摘 要： | 对幂硬化弹塑性材料－刚性材料界面上裂纹以定常方式扩展的Ⅲ型问题进行弹塑性渐近分析，给出裂纹尖端的应力，应变和位移场解。通过数值计算，考察了不同Mach数以及裂纹尖端混合参数对场解的构造以及应力，应变分布的影响，为给出合理的断裂准则提供理论依据。
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| 关 键 词： | 幂硬化 弹塑性材料 界面裂纹 定常扩展裂纹 渐近解 |
| 修稿时间： | 2001年4月2日 |
Near-tip Asymptotic Field for a Constantly Growing Crack at the Interface between a Power-law Elastic-plastic Solid and a Rigid Substrate |
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| TANG Li-giang,JIANG Min-zheng,LIU Chang-hai.Near-tip Asymptotic Field for a Constantly Growing Crack at the Interface between a Power-law Elastic-plastic Solid and a Rigid Substrate[J].Chinese Quarterly Mechanics,2002,23(2):182-188. |
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| Authors: | TANG Li-giang JIANG Min-zheng LIU Chang-hai |
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| Abstract: | The asymptotic analysis has been made of a constantly growing mode K crack at the interface between a power-law elastoplastic solid and a rigid substrate and the accordes ponding stress, stran and displacement fields have been given. Through numerical calculations, the influence of Mach numbers and near-tip mixture parameter on the elastoplastic fields is studied which provides theoretical foundation for establishing fracture toughness criteria. |
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| Keywords: | a power-law elastic-plastic solid interface crack constantly growing crack asymptotic solu-tion |
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