| Tchebychev近似基本解的边界元法在结构边界条件识别中的应用 |
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| 引用本文： | 朱继梅,相小宁.Tchebychev近似基本解的边界元法在结构边界条件识别中的应用[J].上海理工大学学报,1992(3). |
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| 作者姓名： | 朱继梅 相小宁 |
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| 作者单位： | 上海机械学院振动与环境研究室
(朱继梅)，上海机械学院振动与环境研究室(相小宁) |
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| 摘 要： | 本文用边界元法的数值计算与动态测试相结合的方法来识别结构的边界条件。在导出边界积分方程时,文中采用了近似基本解技术,用Tchebychev多项式组成的级数来逼近解析的基本解。文中以薄板结构作为研究对象,用计算机仿真算例识别了矩形板的弹性支承刚度。仿真结果说明方法是有效和可靠的。
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| 关 键 词： | 边界元法 近似基本解 动态测试 边界参数识别 |
APPLICATION OF BEM WITH TCHEBYCHEV APPROXIMATE FU NDAMENTAL SOLUTION IN THE IDENTIFICATION OF BOUNDARY CONDITIONS OF A STRUCTURE |
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| Zhu Jimei Xiang Xiaoning.APPLICATION OF BEM WITH TCHEBYCHEV APPROXIMATE FU NDAMENTAL SOLUTION IN THE IDENTIFICATION OF BOUNDARY CONDITIONS OF A STRUCTURE[J].Journal of University of Shanghai For Science and Technology,1992(3). |
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| Authors: | Zhu Jimei Xiang Xiaoning |
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| Institution: | Zhu Jimei Xiang Xiaoning |
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| Abstract: | In the paper, an apprcach linking BEM and dynamic measurement is presented to identify the boundary conditions of a structure. In deriving the boundary integral equation, an approximate fundamental solution is employed, which consists of the Tchebychev orthognal polinomial series. A thin plate structure is studied and the computer simulation is carried out toestimate the elastic support stiffness of arectangular plate. The simulation result verifies the effectiveness and the reliability of the method offered. |
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| Keywords: | Boundary element method BEM Approximate fundamental solution Dynamic measurement Identification of boundary parameters |
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