| Microscopic study of mode I crack tip deformation |
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| 作者姓名： | DeshunFan CaifuQian ZhongjunJiang |
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| 作者单位： | CollegeofMechanicalandElectricalEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China |
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| 摘 要： | By simulating edge dislocation emissions from a mode I crack tip along multiple inclined slip planes, the plastic zone and dislocation-free zone around the crack tip are obtained. It is found that the shape of the mode I plastic zone consists of two leaning forward loops which is better agreement with experimental observations. Except at the crack tip there are also stress peaks in front of the crack tip. A formula of the maximum peak stress as a function of the applied stress intensity factor and the friction stress has been regressed.
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| 关 键 词： | 断裂行为 塑料 成型工艺 聚合物 晶体平面 |
Microscopic study of mode I crack tip deformation |
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| DeshunFan CaifuQian ZhongjunJiang.Microscopic study of mode I crack tip deformation[J].Journal of University of Science and Technology Beijing,2005,12(1):67-71. |
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| Authors: | Deshun Fan Caifu Qian Zhongjun Jiang |
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| Abstract: | By simulating edge dislocation emissions from a mode I crack tip along multiple inclined slip planes, the plastic zone and dislocation-free zone around the crack tip are obtained. It is found that the shape of the mode I plastic zone consists of two leaning forward loops which is better agreement with experimental observations. Except at the crack tip there are also stress peaks in front of the crack tip. A formula of the maximum peak stress as a function of the applied stress intensity factor and the friction stress has been regressed. |
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| Keywords: | dislocation emission mode I crack plastic zone stress intensity factor |
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