| 结构振动有限元模型的精细修改方法 |
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| 引用本文： | 王超,李立.结构振动有限元模型的精细修改方法[J].西安交通大学学报,1990,24(5):129-136,8. |
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| 作者姓名： | 王超 李立 |
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| 作者单位： | 西安交通大学工程力学系，西安交通大学工程力学系，西安交通大学工程力学系 |
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| 基金项目： | 国家自然科学基金重大项目. |
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| 摘 要： | 本文在分析模型精细校正的基础上,从另一角度推导了分析模型的质量阵和刚度阵的修改公式,简化了精细校正计算公式,不仅计算量小,且修改灵活,修改后的模型保持了与实际结构的对应关系,从而可以再修改.文中对非测试自由度振型值的计算也给出了改进的公式.最后,简要地讨论了精细校正方法的数学基础.
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| 关 键 词： | 结构振动 模型修正 有限元模型 |
FINITE ELEMENT MODEL REFINEMENT OF STRUCTURE VIBRATION |
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| Wang Chao Li Li Chen Shaoting.FINITE ELEMENT MODEL REFINEMENT OF STRUCTURE VIBRATION[J].Journal of Xi'an Jiaotong University,1990,24(5):129-136,8. |
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| Authors: | Wang Chao Li Li Chen Shaoting |
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| Institution: | Department of Engineering Mechanics |
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| Abstract: | Based on the fine correction of the analysis model,a group of formulations
to update the mass matrix and steffness matrix of the analysis model from
another point of view was developed in this paper.The formulations which
simplify the process of fine correotion are of a small amount of calculation and
easy to update.The updated model meintains a corresponding relationship with
the real struoture,thus reupdating can be carried on.This paper also provides
a group of improved formulations to calculate the vibrate-type value of untested
degree of freedom and discusses the mathematical basis of the fine correction
method rather thoroughly. |
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| Keywords: | structure vibration model correction finite element model |
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