| Neumann 随机有限元法计算涡轮叶片的可靠度 |
| |
| 引用本文： | 南宫自军,汪亮,张铎.Neumann 随机有限元法计算涡轮叶片的可靠度[J].推进技术,1998,19(2):36-38. |
| |
| 作者姓名： | 南宫自军 汪亮 张铎 |
| |
| 作者单位： | 西北工业大学航天工程学院,西安,710072 |
| |
| 摘 要： | 推导了具有随机性时Ｎｅｕｍａｎｎ随机有限元法的基本方程，用级数来拟合结构响应的概率密度函数，并通过数值积分计算结构的可靠度。对涡轮叶片的可靠度分析表明，该方法可利用较小的样本容量获得较高的计算精度，并具有较高的计算效率。
|
| 关 键 词： | 涡轮叶片，结构可靠性，诺曼问题，有限元法，概率密度函数 |
| 修稿时间： | 1997-06-28 |
RELIABILITY ANALYSIS OF BLADE WITH NEUMANN SFEM |
| |
| Nangong Zijun,Wang Liang and Zhang Duo.RELIABILITY ANALYSIS OF BLADE WITH NEUMANN SFEM[J].Journal of Propulsion Technology,1998,19(2):36-38. |
| |
| Authors: | Nangong Zijun Wang Liang and Zhang Duo |
| |
| Abstract: | An extended Neumann Stochastic Finite Element Method(NSFEM)has been derived.Probability Density Function(PDF)of blade displacement and stress can be obtained by applying series fitting.Then the numerical integral method is used to compute the reliability of structure.The analysis of two numerical examples shows that the proposed approach is of good computational accuracy and efficiency with a small capacity for samples |
| |
| Keywords: | Turbine blade Structural reliability Neumann problem Finite element method Probability density function |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《推进技术》浏览原始摘要信息 |
| 点击此处可从《推进技术》下载免费的PDF全文 |
