A versatile method to calculate the response of equipment mounted on ship hulls subjected to underwater shock waves

Sigrist, Jean‐François; Broc, Daniel

doi:10.1016/j.finel.2023.103917

Cited by 1 publication

(1 citation statement)

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“…Chung et al [39] took a high-speed catamaran as an example, conducted impact modeling of the catamaran ship type and fluid model based on the finite element method, proposed an impact resistance analysis method for high-speed catamaran ship types and discussed related influencing parameters, and finally compared the simulation results with empirical data for analysis. Sigrist et al [40] proposed a universal method for analyzing the dynamic response of underwater impact loads on ship equipment without the need for 'coupled calculations'. Based on the calculation of transfer functions of fluid, structure, and structure coupling, the impact resistance performance of the ship's hull and equipment was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Impact Resistance Characteristics of a Power Propulsion Shaft System Containing a High-Elasticity Coupling

Guo,

Zhou,

et al. 2024

Applied Sciences

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In research concerning the impact resistance characteristics of ship power transmission shaft systems incorporating a high-elasticity coupling, a significant challenge lies in ascertaining the displacement compensation metrics for the high-elasticity coupling. This study constructs a finite element model of the ship power transmission shaft system with an entity equivalent model of the high-elasticity coupling. Utilizing the Dynamic Design Analysis Method (DDAM) and the time-history method, the dynamic responses of the high-elasticity coupling, the propulsion shaft system, and its critical cross-sections under explosive impact loads are analyzed. The findings indicate that the maximum impact displacement of the propulsion shafting system, as calculated by DDAM, is 22.47 mm in the vertical direction at the driven end of the high-elasticity coupling. In contrast, the maximum impact displacement determined by the time-history method is 15.23 mm in the same direction. The study corroborates the precision of the high-elasticity coupling equivalent model establishment methodology and confirms that the entity equivalent model of the power transmission shaft system with a high-elasticity coupling is capable of fulfilling the criteria for a swift evaluation of impact resistance characteristics. This provides theoretical backing for the forecasting of impact resistance performance in ship propulsion shaft systems.

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Section: Introductionmentioning

confidence: 99%