| 碰撞工况下高速弹性输送机械手疲劳分析 |
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| 引用本文： | 王国庆,刘宏昭. 碰撞工况下高速弹性输送机械手疲劳分析[J]. 应用科学学报, 2003, 21(1): 72-76 |
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| 作者姓名： | 王国庆 刘宏昭 |
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| 作者单位： | 西安理工大学机仪学院 陕西 西安 710048 |
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| 基金项目： | 国家自然科学基金资助项目(50075086)，长安大学青年科技基金资助项目(Q005012) |
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| 摘 要： | 针对航载高速弹性输送机械手在试验中出现的疲劳破坏情况,首次综合考虑机械手的外部斜碰撞和运动副间隙引起的内部碰撞,采用非线性弹簧和非线性阻尼描述碰撞过程,结合有限元方法建立了动力学模型,通过数值仿真,求得了关键截面的应力谱,计算出了疲劳寿命;计算值与试验结果比较吻合,验证了所建模型的正确性.
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| 关 键 词： | 碰撞 疲劳 弹性 间隙 |
| 文章编号： | 0255-8297(2003)01-0072-05 |
| 收稿时间： | 2002-01-06 |
| 修稿时间： | 2002-04-11 |
Fatigue Analysis for the High-Speed Elastic Transporting Manipulator under Impact Condition |
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| WANG Guo-qing,LIU Hong-zhao. Fatigue Analysis for the High-Speed Elastic Transporting Manipulator under Impact Condition[J]. Journal of Applied Sciences, 2003, 21(1): 72-76 |
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| Authors: | WANG Guo-qing LIU Hong-zhao |
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| Affiliation: | School of Machinery Instrument, Xi'an University of Technology, Xi'an 710048, China |
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| Abstract: | To analyze the aeronautic high-speed elastic transporting maniplator fatigue in the experiment , this paper firstly takes account of the external oblique impact and inner contact resulting from a joint with clearance. Nonlinear spring and damper formulations are adopted to model the resulting reaction force between contact objects, then based on the finite element method, a dynamic model is established. By means of numerical simulations, the stress chart of dangerous sectional and fatigue life are investigated. The value of the fatigue life caculated is in accord with the experiment result. |
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| Keywords: | impact fatigue elastic clearance |
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