Session: 02-05-04 Extreme Loads and Responses 4

Paper Number: 127234

127234 - Research on Impact Load Recovery of Marine Isolators 

Marine vibration isolator is a kind of vibration damping anti-impact device for marine equipment. When the ship suffers from the impact of the underwater explosion, the marine equipment suffers from the harsh impact environment, and the marine vibration isolator can alleviate the impact effect. In order to restore the effect of shock load, it is necessary to study the shock load characteristics at the bottom of the marine vibration isolator. In this thesis, according to the results of numerical calculation of non-contact underwater explosion fluid-solid coupling of ships, the impact acceleration load signal of vibration isolator is obtained, and based on the Fourier transform and impact spectrum analysis method, the components of each frequency band of the load are studied. On this basis, the impact load of the marine vibration isolator is reconstructed through the combined triangular wave method and combined sine wave method in the standard specification BV043-85, and synthetic fundamental wave method stipulated etc., and the impact response of the marine vibration isolator under the reconstructed load is analyzed to study the consistency of the recovery effect of the impact load. The results show that the shock isolation effect of the marine isolator reaches 0.1, the combined waveform method has a better shock load recovery effect, which is convenient for guiding the relevant shock test of the isolator, and the synthesized fundamental waveform method is able to restore the components of each frequency band of the shock load better.

Presenting Author: Shuang Wang Harbin Engineering University

Presenting Author Biography: Shuang Wang, male, is a PhD candidate of Ship and Marine Structure Design and Manufacturing, School of Marine Engineering, Harbin Engineering University. His main research interests are ship impact environment and equipment impact resistance.

Authors:

Shuang Wang Harbin Engineering University
Jun Guo Harbin Engineering University
Zhong-Hui Qiu No. 703 Research Institute of CHINA State Shipbuilding Company Limited
Xiao-Jun Zhao Harbin Engineering University
Hua-Xun Zhao Harbin Engineering University