基于NESSUS的方形板可靠性分析  

Structural Reliability Analysis of Square Plate Based on NESSUS

作　　者：苏长青[1] 董恩国[1] 屈力刚[1] 

机构地区：[1]沈阳航空航天大学航空制造工艺数字化国防重点学科实验室,沈阳110136

出　　处：《机械工程师》2016年第3期75-77,共3页Mechanical Engineer

摘　　要：介绍了可靠性分析的相关概念和计算可靠性灵敏度的方法。首先利用Solid Works软件对方形板进行三维建模,通过有限元分析软件Hyper Works对其进行应力分析,然后通过可靠性分析软件NESSUS调用H yper Works软件的分析结果进行可靠性分析。分析结果给出了经过多种概率计算方法验证的方形板失效概率和在给定参数条件下对方形板的失效概率有影响的主要因素以及各个参数的灵敏度和重要度。该分析方法得出的结果可根据可靠性灵敏度调整结构的可靠性,对提高机械结构的可靠度有重要的参考价值。The concept of reliability analysis and the method of calculating reliability sensitivity are introduced. Firstly,Solid Works software is used to carry out 3D modeling, and the stress analysis is carried out by using the finite element analysis software Hyper Works, then the analysis results of the Hyper Works software are transmitted to NESSUS to perform the relevant analysis. The analysis results validate the square plate failure probability through a variety of probability calculation method, and propose the main factors to the quare plate＇s failure probability under the given parameters and the sensitivity and importance of all parameters. The results obtained from this analysis method can be used to adjust the reliability of the structure according to the sensitivity, and it has important reference value to improve the reliability of mechanical structure.

关 键 词：结构可靠性 有限元分析 NESSUS 灵敏度分析 

分 类 号：TH133.3[机械工程—机械制造及自动化]