Optimization and Vibration Reduction Effect Analysis of Double Bottom Structures
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.
vibration and wavedouble bottom structurevibration responsetopology optimizationvibration reduction experiment
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