基于刚弹耦合模型的薄壳车体危险点疲劳计算
Fatigue Assessment of Risk Point on Thin-Shelled Hull Based on the Rigid-Flex Coupled Model

作者: 徐曦萌 * , 赵巍 , 粟斌 , 徐万里 :总后油料研究所油料应用研究室,北京; 王红岩 :装甲兵工程学院车辆工程室,北京;

关键词: 薄壳车体时域方法任务剖面疲劳计算Thin-Shelled Hull Time Domain Method Mission Profile Fatigue Calculation

摘要:
本文以某型履带式装甲车为例,采用时域方法针对薄壳装甲车体在使用过程中的疲劳寿命问题进行了分析与计算。本文采用整车刚弹耦合的动力学建模仿真方法,建立并验证了整车刚弹耦合模型,通过模拟薄壳装甲车辆任务剖面的行驶工况,得出车辆各点载荷的时域信号。综合分析各工况的车辆动力学仿真结果找出了薄壳车体的疲劳危险点。在获取危险点动态载荷的基础上,采用时域方法进行了疲劳寿命计算,得出任务剖面下该危险点出现疲劳破坏的里程数约为37,050公里。

Abstract:
Taking the armored vehicle as example, this paper focused on the fatigue assessment problem occurred in the application of the thin-shelled armored vehicle by using time domain methods. This paper took use of rigid-flex coupled dynamic modeling method to build and verify the vehicle model. Depending on the mission profile, the load time his- tory was gained by simulating. Through analyzing the simulation results, the dangerous points on the hull were figured out. On the basis of accessing the dynamic loads of the dangerous point, through using time domain method, the load spectrum was built up to do the fatigue calculation. The result showed that fatigue problem will occur at the dangerous point when the driving distance was about 37,050 kilometers under the mission profile.

文章引用: 徐曦萌 , 王红岩 , 赵巍 , 粟斌 , 徐万里 (2013) 基于刚弹耦合模型的薄壳车体危险点疲劳计算。 机械工程与技术, 2, 29-34. doi: 10.12677/MET.2013.21005

参考文献

[1] 姜晋庆, 张铎. 结构弹塑性有限元分析法[M]. 北京: 宇航出版社, 1990: 3.

[2] 王军, 魏来生, 兰小平. 驾驶员——履带车辆——路面系统的建模与仿真[J]. 计算机集成制造系统——CIMS, 2003, 9: 108-111.

[3] 韩宝坤, 李晓雷, 孙逢春. 基于DADS的履带车辆多体模型与仿真[J]. 系统仿真学报, 2002, 11: 1531-1533.

[4] 陈立平, 张云清, 任卫群. 机械系统动力学分析及ADAMS应用教程[M]. 北京: 清华大学出版社, 2005: 25-27.

[5] 姚卫星. 结构疲劳寿命分析[M]. 北京: 国防工业出版社, 2004: 25-26.

[6] 缪炳荣, 张卫华, 肖守讷等. 基于多体动力学和有限元法的车体结构疲劳寿命仿真[J]. 铁道学报, 2007, 29(4): 38-42.

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