| 赵岩,林家浩.转子系统的平稳／非平稳随机地震响应分析[J].计算力学学报,2002,19(1):7~11 |
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| 转子系统的平稳／非平稳随机地震响应分析 |
| Seismic analysis of rotor system under stationary nonstationary random earthquake excitations |
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| DOI：10.7511/jslx20021003 |
| 中文关键词: 转子系统 随机振动 地震响应 精细积分法 虚拟激励法 运动微分方程 |
| 英文关键词:rotor system,random vibration,earthquake,precision integration scheme,pseudo excitations method |
| 基金项目:国家自然科学基金 ( 19772 0 0 9)，国家重点基础研究专项经费 ( G19990 32 80 5 )资助项目，Jointly supported by NSF C and NKBRSF. |
| 赵岩 林家浩 |
大连理工大学工程力学系 辽宁大连116023
(赵岩，林家浩)
，大连理工大学工程力学系 辽宁大连116023(曹建华)
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| 中文摘要: |
| 应用虚拟激励法结合精细时程积分计算了转子系统受平稳／非平稳随机地震激励的动力响应。采用虚拟激励分析将平稳随机激励转化为稳态简谐激励，将非平稳随机激励转化为瞬态确定性激励，即使对于非对称的油膜刚度阵和阻尼阵，算法仍然简单高效，并得到精确的结果。 |
| 英文摘要: |
| In this paper, the pseudo excitation method and high precision direct integration scheme are used in the analysis of rotor bearing systems subjected to stationary non-stationary random earthquake excitations. By means of the pseudo excitation method, the stationary random excitations are transformed into harmonic excitations while the non-stationary random excitations are transformed into deterministic transient excitations. So that the analyses are greatly simplified. Even for asymmetric stiffness and damping matrices due to the fluid films, the algorithm proposed is simple, accurate and highly efficient. |
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