针对船舶多跨梁结构振动机理揭示不足，基于传递矩阵法开展弹性支撑对多跨梁结构振动特性的影响研究。建立船舶典型多跨梁结构振动分析模型，探究多跨梁结构固有模态和振动传递特性，揭示船舶多跨梁结构振动机理。以弹性支撑多跨梁简化分析船舶加筋板架结构，探究支撑刚度、跨度等对船舶板架结构振动特性的影响规律。研究表明，多跨梁结构的固有频率随支撑跨度和支撑刚度的增大而下降；一定局部支撑刚度下，船舶板架结构振动可简化为多跨梁结构振动，其振动特性与简支梁趋于一致。
Aiming at the insufficient disclosure of the vibration mechanism of the ship's multi-span beam structure, the effect of elastic support on the vibration characteristics of the multi-span beam structure was studied based on the transfer matrix method. The vibration analysis model of the typical multi-span beam structure of the ship is established, the inherent modal and vibration transfer characteristics of the multi-span beam structure are explored, and the vibration mechanism of the multi-span beam structure of the ship is revealed; The structure has explored the influence of support stiffness, span, etc. on the vibration characteristics of ship plate frame structure. The research shows that the natural frequency of the multi-span beam structure decreases with the increase of the span and the stiffness; under certain local support stiffness, the vibration of the ship slab structure can be simplified to the vibration of the multi-span beam structure, and its vibration characteristics are similar to those of the simply supported beam.
2020,42(10): 17-22 收稿日期：2020-06-29
DOI：10.3404/j.issn.1672-7649.2020.10.004
分类号：U661.43
基金项目：国家重点研发计划(2016YFC0303406)；山东省重点研发计划(2019JZZY010125)；中央高校基本科研业务费资助项目(HEUCFD1515，HEUCFM170113)；船舶振动噪声重点实验室基金资助项目(6142204190207)；中国博士后基金资助项目(2014M552661)；国家自然科学基金资助项目(51209052，51679053，51709063)；哈尔滨工程大学博士研究生科研创新基金资助项目(HEUGIP201902)
作者简介：宋超(1983-)，男，工程师，主要研究方向为舰船总体。
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