大连海事大学 船舶与海洋工程学院， 辽宁 大连 116026
出版日期:2019-02-28发布日期:2019-02-28通讯作者:王天霖，男，教授， 电话(Tel.):0411-84729611; E-mail: wangtianlin@dlmu.edu.cn.作者简介:于鹏垚(1988-)，男，吉林省四平市人，副教授，现主要从事船舶与海洋工程非线性水动力研究.基金资助:国家自然科学基金资助项目（51679021，51709030），中央高校基本科研业务费(3132018201)，国家重点研发计划重点专项（2016YFC0301500），辽宁省自然科学基金指导计划（20170520436）Water Entry of an Elastic Wedge Based on a Semi-Analytical Slamming Model
YU Pengyao,ZHAO Yong,WANG Tianlin,ZHEN Chunbo,SU ShaojuanTransportation Equipment and Ocean Engineering College, Dalian Maritime University, Dalian 116026, Liaoning, China
Online:2019-02-28Published:2019-02-28摘要/Abstract
摘要： 基于半解析砰击模型，建立了弹性楔形体入水冲击响应的流固耦合分析方法.通过对比不同网格密度、时间步长和模态数目下的计算结果，表明该方法具有较好的收敛性.通过与商业软件和文献结果对比，验证了该方法的正确性.与基于Wagner模型的水弹性分析方法相比，该方法合理地实现了流动分离前后楔形体结构响应的预报.利用该方法对比分析不同冲击速度下耦合响应和解耦响应，进一步揭示了流固耦合作用的重要性.
关键词: 入水冲击, 半解析砰击模型, 流固耦合, 水弹性
Abstract: A fluid-structure coupled method for the dynamic response of the elastic wedge during the water entry is established based on a semi-analytical slamming model. By comparing the calculation results with different mesh densities, time steps and mode numbers, it is shown that the proposed method has better convergence. The correctness of the method is verified by comparing it with the results of commercial software and literature. Compared with the hydroelastic analysis method based on the Wagner model, this method can reasonably predict the structural response before and after flow separation. The structural responses by the coupling method and decoupling method under different impact velocities are compared and analyzed, and the importance of fluid-structure interaction is further revealed.
Key words: water entry, semi-analytical slamming model, fluid-structure interaction, hydroelasticity
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