摘要
为了开展导弹舱体结构可靠性分析,将有限元软件ANSYS Workbench中的六西格玛(Six Sigma)模块和可靠性理论相结合。首先利用参数化建模方法在ANSYS Workbench中构建导弹舱体结构模型,然后通过最优空间填充设计抽样得到多组样本点,结合自动改进Kriging(Auto-Refinement Kriging,AR-Kriging)方法生成响应面进而开展参数灵敏度分析,最后根据Six Sigma分析方法评估了舱体结构的强度以及刚度可靠性。分析结果表明,与Kriging方法相比,AR-Kriging方法能够有效提高响应面的全局拟合能力;灵敏度分析表明,舱体内径对舱体结构可靠性的影响最大。
The structural reliability analysis of a missile cabin is conducted by combining the Six Sigma module in ANSYS Workbench with reliability theory.The parametric model of the missile structure is established primarily by ANSYS Workbench,and then some design of experiment points are generated by Optimal Space-Filling Design method.Further,the auto-refinement Kriging method is utilized to generate the response surface which is adopted to conduct sensitivity analysis and reliability analysis.Finally,the structural reliability of the missile cabin is assessed by Six Sigma Analysis.The results show that the global fit capability of the response surface generated by the auto-refinement Kriging method is effectively improved when compared with that of Kriging method.The sensitivity analysis indicates that the internal diameter has the vital effect on the structural reliability of the missile cabin.
作者
秦强
赵朋飞
张文伟
冯蕴雯
Qin Qiang;Zhao Peng-fei;Zhang Wen-wei;Feng Yun-wen(Aerospace Science and Industry Defense Technology Research and Test Center,Beijing,100854;School of Aeronautics,Northwestern Polytechnical University,Xi’an,710072)
出处
《导弹与航天运载技术》
CSCD
北大核心
2020年第6期16-22,共7页
Missiles and Space Vehicles
基金
国家自然科学基金(51875465)。
