In order to improve the vibration isolation capability of offshore platform mounting base,the finite element model of its double bottom structure is established.With the vibration level difference at the location where the acceleration amplitude of the evaluation point group is the maximum as the evaluation index,topological optimization of the double bottom structure with opening,opening and reinforcement is performed by variable density method.The vibration reduction effect of the topologocally optimized structure and the original structure is compared and analyzed.And experiments are carried out to verify the reliability of the optimization results.The results show that the vibration level drop of the optimized base is 3.41 dB higher than that of the original base.The test results are in good agreement with the simulation results with the maximum difference of 5.2%.The optimization results are reliable and the vibration reduction effect is obvious after the optimization,The research has a certain guidance and reference significance for the vibration reduction design of the base.
关键词
振动与波/双层底结构/振动响应/拓扑优化/减振试验
Key words
vibration and wave/double bottom structure/vibration response/topology optimization/vibration reduction experiment
维普
万方数据