[1]张红旗,邵晓东,胡祥涛,等.基于随机有限元方法的机械结构可靠性评估[J].东南大学学报(自然科学版),2014,44(1):76-81.[doi:10.3969/j.issn.1001-0505.2014.01.014]
 Zhang Hongqi,Shao Xiaodong,Hu Xiangtao,et al.Reliability assessment for mechanical structure based on stochastic finite element method[J].Journal of Southeast University (Natural Science Edition),2014,44(1):76-81.[doi:10.3969/j.issn.1001-0505.2014.01.014]
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基于随机有限元方法的机械结构可靠性评估()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
76-81
栏目:
数学、物理学、力学
出版日期:
2014-01-18

文章信息/Info

Title:
Reliability assessment for mechanical structure based on stochastic finite element method
作者:
张红旗12邵晓东1胡祥涛2周红桥2夏丹3苏春3
1西安电子科技大学机电工程学院, 西安710071; 2中国电子科技集团第三十八研究所, 合肥230088; 3东南大学机械工程学院, 南京211189
Author(s):
Zhang Hongqi12 Shao Xiaodong1 Hu Xiangtao2 Zhou Hongqiao2 Xia Dan3 Su Chun3
1 School of Electronical and Mechanical Engineering, Xidian University, Xi’an 710071, China
2 CETC No. 38 Research Institute, Hefei 230088, China
3School of Mechanical Engineering, Southeast University, Nanjing 211189, China
关键词:
随机有限元法 可靠性评估 动态环境 载荷 灵敏度分析
Keywords:
stochastic finite element method(SFEM) reliability assessment dynamic environment load sensitivity analysis
分类号:
TB114.3
DOI:
10.3969/j.issn.1001-0505.2014.01.014
摘要:
采用随机有限元方法研究复杂载荷条件下某机械结构组件的可靠性特性.考虑工作状态和运输状态,获取组件的载荷特性及其计算模型;利用Ansys软件建立组件有限元分析模型,分析不同工况下组件的静力学和动力学特性,包括应力应变、固有频率、振型、风载静响应以及随机振动响应分析等.基于拉丁超立方抽样的蒙特卡洛方法,将载荷和材料的屈服强度作为随机输入变量,利用随机有限元模型评估风载和路面载荷交互作用下组件的可靠度.在此基础上,分析影响结构可靠性的灵敏度参数.结果表明,该方法能够有效地评估动态工作环境下结构件的可靠性特性,为此类系统的可靠性设计提供理论依据.
Abstract:
Stochastic finite element method(SFEM)is adopted to evaluate the reliability characteristics of a mechanical structural assembly. The load characteristics and its calculating model of the assembly are obtained by considering both the working and transportation situation. The corresponding finite element analysis model is established with Ansys software. The static and dynamic performances of the components including stress-strain behavior, inherent frequency mode of vibration, static response of wind load, and random vibration response analysis,under different situations are obtained. Based on the Monte Carlo simulation with the Latin hypercube sampling method, the load and the yield strength of material are selected as stochastic variables, and then SFEM is used to assess the reliability of the assembly which is undergoing the interaction of wind load and road load. On this basis, the parametric sensitivity analysis for the assembly’s structural reliability is carried out. The results show that SFEM can evaluate the structural reliability under dynamic environments effectively, providing a theoretical foundation for the reliability design of such systems.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2013-07-10.
作者简介: 张红旗(1975—),男,博士生,研究员级高级工程师;邵晓东(联系人),男,博士,教授,博士生导师,13991138009@163.com.
基金项目: 国防技术基础计划资助项目(Z312011B003,Z312012B001,B3120131100)、国防基础科研计划资助项目(A1120131044).
引用本文: 张红旗,邵晓东,胡祥涛,等.基于随机有限元方法的机械结构可靠性评估[J].东南大学学报:自然科学版,2014,44(1):76-81. [doi:10.3969/j.issn.1001-0505.2014.01.014]
更新日期/Last Update: 2014-01-20