| 复杂载荷条件下提升机主轴的断裂参量分析 |
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| 引用本文： | 赵凌燕,薛河,薛晓峰,唐伟.复杂载荷条件下提升机主轴的断裂参量分析[J].西安科技大学学报,2012,32(2):250-253,263. |
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| 作者姓名： | 赵凌燕 薛河 薛晓峰 唐伟 |
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| 作者单位： | 1. 西安科技大学理学院,陕西西安,710054
2. 西安科技大学机械工程学院,陕西西安,710054 |
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| 基金项目： | 西安科技大学科研培育基金项目(201138) |
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| 摘 要： | 以含裂纹提升机主轴为研究对象,利用ABAQUS子模型技术,模拟计算了复杂载荷条件下提升机主轴三维表面裂纹附近的应力应变场,获取了椭圆裂纹前端应力强度因子KI和J积分的分布规律。研究结果表明,椭圆表面裂纹中点和两端的扩展明显要慢于裂纹其他部位,且当分别采用KI主导和J主导分析时,获得的裂纹前端扩展趋势有一定的差别。
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| 关 键 词： | 提升机主轴 子模型 应力强度因子 J积分 |
Fracture parameters analysis of elevator shaft under complex load conditions |
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| ZHAO Ling-yan
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XUE He
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XUE Xiao-feng
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TANG Wei.Fracture parameters analysis of elevator shaft under complex load conditions[J].JOurnal of XI’an University of Science and Technology,2012,32(2):250-253,263. |
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| Authors: | ZHAO Ling-yan XUE He XUE Xiao-feng TANG Wei |
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| Institution: | 1.College of Sciences,Xi’an University of Science and Technology,Xi’an 710054,China;2.College of Mechanical Engineering,Xi’an University of Science and Technology,Xi’an 710054,China) |
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| Abstract: | The elevator shaft with crack is the object of the study.Using ABAQUS sub-model technique.The stress and strain fields ahead of a three-dimensional surface crack under complex loading conditions are simulated and the distribution of stress intensity factor KI and J-integral along the semi-elliptical crack front in the elevator shaft is obtained.The results of this investigation show that the elliptical surface crack propagation at the midpoint and both ends is significantly slower than that of other parts of the crack front,and the predicted results of the crack front propagation trends would be different by using KI or J separately. |
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| Keywords: | elevator shaft sub-model stress intensity factor J-integral |
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