| 集中质量矩阵替代一致质量矩阵的合理性与局限性 |
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| 引用本文： | 杨亚平,沈海宁.集中质量矩阵替代一致质量矩阵的合理性与局限性[J].青海大学学报,2010,28(1):35-39. |
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| 作者姓名： | 杨亚平 沈海宁 |
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| 作者单位： | 青海大学,青海,西宁,810016 |
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| 摘 要： | 文中分析了集中质量矩阵取代采用一致质量矩阵后对体系自振频率造成的误差,并指出集中质量矩阵应该有条件的使用。并根据相对容许误差,给出了实际计算中采用集中质量矩阵时单元尺寸的选取方法。
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| 关 键 词： | 有限单元法 集中质量矩阵 一致质量矩阵 |
The rationality and limitation on the substitution of the concentrated mass matrix for the consistent mass matrix. |
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| YANGYaping,SHENHaining.The rationality and limitation on the substitution of the concentrated mass matrix for the consistent mass matrix.[J].Journal of Qinghai University(Natural Science),2010,28(1):35-39. |
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| Authors: | YANGYaping SHENHaining |
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| Institution: | YANG+Yaping,SHEN+Haining+(Qinghai+University,Xining+810016,China) |
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| Abstract: | The error in the system self-oscillating frequency after the substitution of the concentrated mass matrix for the consistent mass matrix is analysed in this paper and the concentrated mass matrix should be ased under some conditions.At last,the unit size selection methed in the applycation of the concentrated mass matrix and its real culculation is given out accoroling to the relative allowable error. |
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| Keywords: | finite element method concentrated mass matrix consistent mass matrix |
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