Modal Analysis and Lightweight Design of High-power Marine Gearbox based on Topology Optimization

摘要

Based on topology optimization, modal analysis and lightweight design of high-power marine gearbox case is studied. By the finite element analysis of original gearbox case, the structure strength has greater redundancy. After determining the design space and working load, after determining the design space and working load, the case thinning and local strength enhanced program based on SIMP method has determined. By considering the rationality and security of design and manufacture, both the static and dynamic performances of the optimized case is greatly improved, with a 16.36% reduction in maximum stress, a 13.86% reduction in maximum displacement, and successfully saving material 5.87%.