船体梁振动的反共振频率配置设计

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摘要本文基于船舶主机等主要激励，计算得到了船体梁的反共振频率，并提出了一种基于反共振频率配置的船体振动设计方法。该方法可将激励频率设置为反共振频率，通过对结构刚度修改或质量修改，使得船体的上层建筑或桅杆等重要部位在该反共振频率下振动响应为零，并可明显减小该频率下船体的振动响应。数值算例验证了所提出的反共振频率配置设计方法的有效性。

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	史英沙1
	黎胜1
	2

关键词 ：船体梁, 反共振频率, 船体振动, 结构修改

Abstract：Here, based on main excitation of ship’s main engine, anti-resonance frequencies of hull girder were calculated, and a hull vibration design method based on anti-resonance frequencies allocation was proposed. With this method, the excitation frequency could be set as the anti-resonance frequency. By modifying structural stiffness or mass, vibration responses of important positions of a hull, such as, superstructure or mast etc. were zero under the anti- resonance frequency, and the vibration response of the hull under this frequency could be obviously reduced. The effectiveness of the proposed method was verified with numerical examples.

Key words： hull girder anti-resonance frequency hull vibration structural modification

收稿日期: 2019-08-06 出版日期: 2021-02-15

引用本文:

史英沙1，黎胜1,2. 船体梁振动的反共振频率配置设计[J]. 振动与冲击, 2021, 40(3): 133-138.
SHI Yingsha1, LI Sheng1,2. Hull girder vibration design Based on anti-resonance frequencies allocation. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(3): 133-138.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I3/133

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