| 随机响应面法在结构随机响应计算中的应用 |
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| 引用本文： | 郭秩维,白广忱.随机响应面法在结构随机响应计算中的应用[J].航空动力学报,2008,23(11):2021-2025. |
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| 作者姓名： | 郭秩维 白广忱 |
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| 作者单位： | 北京航空航天大学 能源与动力工程学院, 北京 100191 |
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| 摘 要： | 传统的响应面方法以一般多项式逼近结构的随机响应,但这种方式并不能保证收敛性.以随机多项式为基础的随机响应面方法,可以弥补这一不足.两个数值例子和一个发动机轮盘实例来验证这一方法的有效性.结果表明:随着随机多项式次数的增加,随机响应面所得到的响应概率密度曲线愈加趋近于由蒙特卡罗方法所得到的概率密度曲线.
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| 关 键 词： | 随机响应面 航天结构 不确定性 随机多项式 |
| 收稿时间： | 2008/4/14 0:00:00 |
| 修稿时间： | 2008/5/26 0:00:00 |
Application of stochastic response surface method in the structural stochastic response |
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| GUO Zhi-wei and BAI Guang-chen.Application of stochastic response surface method in the structural stochastic response[J].Journal of Aerospace Power,2008,23(11):2021-2025. |
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| Authors: | GUO Zhi-wei and BAI Guang-chen |
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| Institution: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | Classical response surface method approaches the structural stochastic response using a group of general polynomials,but this method can not guarantee convergence.Stochastic response surface method can compensate the drawback of the classical response surface.Two numerical examples and a practical example of an aero engine disk were presented herein to validate stochastic response surface method.The results show that,with the increasing order of polynomial chaos,the probability density curve of a response a... |
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| Keywords: | stochastic response surface aerospace structure uncertainty polynomial chaos |
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