Journal of Shanghai Jiaotong University ›› 2019, Vol. 53 ›› Issue (2): 179-187.doi: 10.16183/j.cnki.jsjtu.2019.02.008

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Water Entry of an Elastic Wedge Based on a Semi-Analytical Slamming Model

YU Pengyao,ZHAO Yong,WANG Tianlin,ZHEN Chunbo,SU Shaojuan   

  1. Transportation Equipment and Ocean Engineering College, Dalian Maritime University, Dalian 116026, Liaoning, China
  • Online:2019-02-28 Published:2019-02-28

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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