Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (11): 91-95.doi: 10.3969/j.issn.1000-565X.2013.11.015

• Mechanical Engineering • Previous Articles     Next Articles

Calculation of Structural Hybrid Dynamic Reliability Under Multiple Interval Loads

Fang Yong- feng Chen Jian- jun Yan Bin Cao Hong- jun   

  1. Key Laboratory of Electronic Equipment Structure Design of the Ministry of Education,Xidian University,Xi'an 710071,Shaanxi,China
  • Received:2013-03-25 Online:2013-11-25 Published:2013-10-11
  • Contact: 方永锋(1975-)，男，博士，毕节学院副教授，主要从事结构与系统可靠性设计与检测、计算机辅助设计研究． E-mail:fangyf_9707@126.com
  • About author:方永锋(1975-)，男，博士，毕节学院副教授，主要从事结构与系统可靠性设计与检测、计算机辅助设计研究．
  • Supported by:

    国家自然科学基金资助项目(51175398);毕节学院高层次人才科学研究项目(院科合字 G2013007 号)

PDF

467

Abstract:

This paper deals with the prediction model of structural hybrid dynamic reliability under multiple intervalloads and with or without structural stochastic strength degradation.In the investigation,first,equivalent intervalloads are used to substitute multiple interval loads and are taken as random variables with uniform distribution.Next,the random variables and the structural random strength are equivalently normalized.Then, the structural dy-namic reliability under multiple interval loads is calculated by using the first- order second- moment method accordingto the stress- strength interference theory.Finally, three numerical examples are presented to demonstrate the rationa-lity,practicability and accuracy of the proposed method.

Key words: structure, interval load, random strength, dynamic reliability