| 转轴系统平稳随机地震响应的变异性分析 |
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| 引用本文： | 赵岩,林家浩,曹建华.转轴系统平稳随机地震响应的变异性分析[J].工程力学,2002,19(2):26-31. |
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| 作者姓名： | 赵岩 林家浩 曹建华 |
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| 作者单位： | 工业装备结构分析国家重点实验室,大连理工大学,大连,116023 |
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| 基金项目： | 国家自然科学基金(10072015)，国家重点基础研究专项经费(G1999032805)资助项目Jointly supported by NSFC and NKBRSF |
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| 摘 要： | 本文对于具有随机参数的线性转轴系统受平稳随机地面激励的问题,给出了求解其随机响应方差变异性的计算方法。由于先用虚拟激励法将平稳随机激励转化为确定性的简谐激励,使双随机问题精确地转化为单随机问题,使求解过程简便有效。
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| 关 键 词： | 地震 转轴系统 虚拟激励法 灵敏度 摄动 |
| 文章编号： | 1000-4750(2002)01-026-06 |
VARIATION ANALYSIS OF SHAFT SYSTEMS SUBJECTED TO STATIONARY RANDOM SEISMIC EXCITATIONS |
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| ZHAO Yan,LIN Jia-hao,CAO Jian-hua.VARIATION ANALYSIS OF SHAFT SYSTEMS SUBJECTED TO STATIONARY RANDOM SEISMIC EXCITATIONS[J].Engineering Mechanics,2002,19(2):26-31. |
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| Authors: | ZHAO Yan LIN Jia-hao CAO Jian-hua |
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| Abstract: | An efficient analysis method is proposed for rotating shaft systems with uncertain parameters subjected to stationary random seismic excitations. The pseudo excitation method is first used to transform the random excitations into deterministic sinusoidal excitations. As a result, the dual-random problems are transformed into much simpler single excitation problems accurately, which can be computed using the conventional perturbation method. Numerical examples show that the results computed using the proposed method agree well with those obtained from Monte-Carlo simulation. |
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| Keywords: | earthquake shaft system pseudo excitation method sensitivity perturbation |
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