| 基于线弹簧模型的焊接结构断裂可靠性分析 |
| |
| 引用本文： | 孙鹏飞,袁杰红,段静波.基于线弹簧模型的焊接结构断裂可靠性分析[J].强度与环境,2011(6):50-56. |
| |
| 作者姓名： | 孙鹏飞 袁杰红 段静波 |
| |
| 作者单位： | 国防科技大学指挥军官基础教育学院; |
| |
| 摘 要： | 将表面裂纹断裂分析的线弹簧模型法与重要抽样法相结合,提出了一种可进行焊接结构断裂可靠性分析的新方法.采用该方法对典型焊接平板的断裂可靠性进行了分析,分析过程中考虑了材料特性、外载荷、焊接残余应力、裂纹尺寸等参数的不确定性,给出了结构的失效概率以及各随机变量的可靠性灵敏度,算例表明,断裂韧度KIC对结构可靠性影响最大,外...
|
| 关 键 词： | 焊接结构 线弹簧模型 重要抽样法 失效概率 可靠性灵敏度 |
Fracture reliability analysis of welded structure based on line-spring model |
| |
| Sun Pengfei Yuan Jiehong Duan Jingbo.Fracture reliability analysis of welded structure based on line-spring model[J].Structure & Environment Engineering,2011(6):50-56. |
| |
| Authors: | Sun Pengfei Yuan Jiehong Duan Jingbo |
| |
| Institution: | Sun Pengfei Yuan Jiehong Duan Jingbo(College of Basic Education for Commanding Officers,National University of Defense Technology,Changsha 410072,China) |
| |
| Abstract: | A novel method for the fracture reliability of welded structure was established through combining the line-spring model of surface crack with importance sampling method.The fracture reliability of typical welded plate was analyzed with this method in consideration of the uncertainty of parameters such as material character,external load,residual stress and crack size.The failure probability and reliability sensitivity were obtained.The example indicates that the fracture toughness KIC has the greatest effec... |
| |
| Keywords: | welded structure line-spring model importance sampling method failure probability reliability sensitivity |
| 本文献已被 CNKI 维普 等数据库收录！ |
