| 刘高,王秀伟.悬索桥颤振稳定性分析的精细时程积分法[J].计算力学学报,2001,18(3):316~320 |
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| 悬索桥颤振稳定性分析的精细时程积分法 |
| Flutter stability analysis of suspension bridges by precise time-integration method |
| 修订日期：1999-10-06 |
| DOI：10.7511/jslx20013064 |
| 中文关键词: 悬索桥 颤振稳定性 精细时程积分法 |
| 英文关键词:suspension bridges,flutter stability,precise time-integration method |
| 基金项目:国家自然科学基金资助项目 (5 95 780 0 1 ) |
| 刘高 王秀伟 |
| [1]大连理工大学力学系，辽宁大连116023 [2]石家庄铁道学院桥梁系，河北石家庄050043 |
| 摘要点击次数: 1627 |
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| 中文摘要: |
| 研究精细时程积分法在悬索桥颤振稳定性分析中的应用，首先，将 气流整个作为一个系统，组集系统关于模态广义坐标的状态空间方程，然后，应用精细时程积分法计算状态的向量的时程响应，根据状态向量时程响应的对数衰减率判断系统的颤振稳定性，最后，以英国塞文悬索桥为数值算例，验证了本文方法的正确性。 |
| 英文摘要: |
| The application of the precise time-integration method in the flutter stability analysis of suspension bridges is studied. Firstly, the bridge structure is combined with wind as a whole system, and the system's state-space equation about the generalized coordinates of modes is assembled. Then, the time-history of the state-space vector is computed by the precise time-integration method. According to the logarithmic decrement of the time-history of the state-space vector, the stability of the system is estimate. Finally, the British Severn Bridge is analyzed to confirm the method. |
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