| 朱靖华,薛惠钰.结构谐振动力响应的有限元、动凝聚、迁移子结构法[J].计算力学学报,1991,8(2): |
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| 结构谐振动力响应的有限元、动凝聚、迁移子结构法 |
| An Extended FETM Method for Forced Vibration of Structures |
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| DOI：10.7511/jslx19912028 |
| 中文关键词: 谐振,有限元,动凝聚,子结构 |
| 英文关键词:forced vibration,finite element,dynamic condensation,substructure |
| 基金项目: |
| 朱靖华 薛惠钰 |
苏州城建环保学院城建系
(朱靖华)
，苏州大学物理系(薛惠钰)
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| 摘要点击次数: 1542 |
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| 中文摘要: |
| 本文扩展了FETM法思想,结合子结构、动凝聚及Riccati变换理论,直接求解谐和激励下结构的受迫动力响应,从而节省了运行时间,严格控制了计算精度。本文编制了程序,并以振型叠加法运行结果为参照,对不同算例的运算效率作了比较。结果表明:本文方法在理论上、实践上是切实可行的。 |
| 英文摘要: |
| An extended FETM method, combined with dynamic condensation, Riccati transformation and substructure techniques, is proposed for obtaining forced vibration response of structures directly.This offers the advantages to overcome the numerical instabilities and reduce the computational time as well as storage requirements. The analytical procedure in this method for two-dimensional bending problems are described.Various numerical examples of these problems are presented to demonstrate the high efficiency and accuracy of the proposed method.The results from these examples agree well with those obtained by the modal superposition method. |
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