| 弹性结构振动系统的分层近似建模 |
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| 引用本文： | 黄琳,陈德成,罗华耿.弹性结构振动系统的分层近似建模[J].力学学报,1988(3). |
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| 作者姓名： | 黄琳 陈德成 罗华耿 |
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| 作者单位： | 北京大学
(黄琳，陈德成)，北京大学(罗华耿) |
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| 摘 要： | 已知弹性结构线性振动系统的具有不同置信度的分层次固有频率和振型,以及用合理的离散化方法得到了系统的刚度矩阵K和质量矩阵M,并假设了M、K中之一较可靠,本文给出在这些条件下,考虑到不同层次的置信度的近似建模方法,对建模方法以及所得结果的唯一性也给出了严格的数学证明;最后的数字例子不仅证实了这一方法的可行性,并且表明这一方法优于所列文献4]给出的方法。
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| 关 键 词： | 建模 刚度矩阵 质量矩阵 特征值 特征向量 |
APPROXIMATE MODELING OF AN ELASTIC STRUCTURE ACCORDING TO DIFFERENT CONFIDENCE TEST DATE |
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| Huang Ling,Chen Decheng,Luo Hua.APPROXIMATE MODELING OF AN ELASTIC STRUCTURE ACCORDING TO DIFFERENT CONFIDENCE TEST DATE[J].chinese journal of theoretical and applied mechanics,1988(3). |
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| Authors: | Huang Ling Chen Decheng Luo Hua |
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| Abstract: | In this paper, an elastic structure model was constructed acceding to the test date with different confidence and properly selected analytical para-meter (mass matrix or rstiffness matrix K). Modeling method and the uniqueness of the results was strictly proved, finally, a numerical example proved the reasonableness of this method and the results was batter that that of reference 4] . |
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| Keywords: | modeling stiffness matrix mass matrix eigenvalue eigenvector |
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