| 受演变随机激励结构响应的精细逐步积分法 |
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| 引用本文： | 林家浩 沈为平. 受演变随机激励结构响应的精细逐步积分法[J]. 大连理工大学学报, 1995, 35(5): 600-605 |
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| 作者姓名： | 林家浩 沈为平 |
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| 作者单位： | 大连理工大学工程力学研究所，上海交通大学，英国威尔士大学 |
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| 基金项目： | 中国自然科学某全委员会与英国自家学全联合资助项目 |
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| 摘 要： | 对于受演变随机激励的线性多自由度体系，给出计算其非平稳响应的高效高精度方法，先用虚拟激励法将随机荷载化为确定性荷载；然后构造一种特别快速精确的无条件稳定显式逐步积分格式，求出时变功率谱响应的离散数值解。
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| 关 键 词： | 随机振动 动态响应 逐步积分 演变随机激励 结构 |
High precision direct integration scheme for analysingstructural nonstationary random responses |
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| Lin Jiahao,Shen Weiping. High precision direct integration scheme for analysingstructural nonstationary random responses[J]. Journal of Dalian University of Technology, 1995, 35(5): 600-605 |
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| Authors: | Lin Jiahao Shen Weiping |
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| Abstract: | A highly efficient and accurate direct integration scheme for analysing the non-stationary responses of linear MDOF structures subjected to evolutionary random excitations isproposed. The random excitations are first transformed into pseudo excitations before theresulting deterministic equations of motion are solved by the proposed high precision directintegration scheme. Two examples are given to show the advantages of this method over theNewmark and Duharnel methods when computing the time-dependent power spectral densities ofthe structural responses. |
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| Keywords: | non-stationary random vibration dynamic response/direct integration scheme |
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