一种高阶模态涡振试验新气弹模型的模型参数优化设计

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Abstract Elastically multi-supported aeroelastic model is a new model to investigate the high-order vertical mode vertox-induced vibration of large-span bridge. To make the frequencies, modal masses and mode shapes of this model match with that of the original structures, in this paper, a model parameters optimization method based on matrix equation of dynamic system is proposed. First, the optimal objective function on the frequencies, modal masses and mode shapes of this model is established by using the matrix equation of dynamic system. Then, the optimal designs of the stiffness of beam and springs and the additional mass are found out by the least square method. The proposed method has been validated by numerical simulation. The feasibility of this method on real bridges are investigated by taking two different types of suspension bridges as examples. The results indicate that: the model designed by this method can well match with the original structure.

Key words： model parameters;optimal design aeroelastic model;vortex-induced vibration;

Received: 05 December 2018 Published: 28 July 2020

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	Articles by authors
	WEN Qing1
	2
	HUA Xugang2
	CHEN Zhengqing2
	WANG Xiuyong1

Cite this article:

WEN Qing1,2,HUA Xugang2, et al. Optimal parametric design of a new aeroelastic model forhigher-order vertical modalvortex-induced vibration tests[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(15): 103-108.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I15/103

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