| .II型动态扩展裂纹尖端场的仿真分析[J].计算力学学报,2007,24(2): |
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| II型动态扩展裂纹尖端场的仿真分析 |
| Simulation analysis of mode II dynamic propagating crack-tip |
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| DOI：10.7511/jslx20072024 |
| 中文关键词: 粘性系数,马赫数,动态扩展,仿真分析 |
| 英文关键词:Viscosity coefficient,Mach number,dynamical crowing crack,simulation analysis |
| 基金项目: |
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| 哈尔滨工程大学建筑工程学院 哈尔滨150001 |
| 摘要点击次数: 1155 |
| 全文下载次数: 18 |
| 中文摘要: |
| 采用弹粘塑性力学模型,对II型动态扩展裂纹尖端的对数奇异性,进行了数值仿真计算。详细地分析了粘性系数α、马赫数M2对裂纹尖端的应力场影响。指出了文献[1]中对数奇异性区域存在的问题,解释了文献[1]中过度区的成因,对过度区尖端场解的形式和求解方法做了合理的推测。 |
| 英文摘要: |
| The numerical simulation of ln(R/r) singular in mode II dynamical crowing crack's tip field is conducted based on an elastic visco-plastic constitutive model.The effects of viscosity coefficients and Mach number are analyzed in detail.The fact that ln(R/r) singular zone existing in reference [1],the form of singular solution and the solving method are guessed rationally. |
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