关键词: 砰击载荷, 动力响应, 载荷参数, 移动动荷系数, 无因次化, 敏感度

Abstract: In response to the issue of slamming loads experienced by ship structures under high sea conditions, this paper employs the Abaqus finite element software to simulate the impact of slamming loads moving in different directions on the dynamic response of five stiffened panels. The slamming load is equivalently modeled as a pulse time history that rises linearly and decays exponentially. By varying the load parameters (peak pressure, low pressure, length of rising section, length of falling section and moving speed), the paper analyzes the specific impact of these parameters on the dynamic response of the stiffened panels. The research finds that the dynamic response of the stiffened panels is closely related to the load parameters, especially the influence of moving speed on the dynamic response is the most significant. Furthermore, by introducing the moving dynamic load factor DLFm and conducting a dimensionless analysis, the paper deeply explores the variation laws and sensitivities between the dynamic response and the dimensionless parameters of the slamming load, providing important theoretical basis for the design and optimization of ship structures.

Key words: slamming load, dynamic response, load parameter, moving dynamic load coefficient, dimensionless, sensitivity