噪声与振动控制Issue(1)：15-20,6.DOI:10.3969/j.issn.1006-1335.2016.01.004
约束阻尼板的渐进法结构减振拓扑动力学优化
Topological Dynamic Optimization for Structure Vibration Reduction of Constraint Damping Plates Using EvolutionaryMethod
摘要
Abstract
Structure topological optimization for vibration reduction of constraint damping plates was studied. The dynamic equations for the constraint damping plates were established, and a modal loss factor model for the plates was obtained. A topological optimization model to maximize the modal loss factor with lest viscoelastic damping materials consumption and minimum modal frequency variation as the constraints, was established for the constraint damping plates. The evolutionary structural optimization method was employed to solve the optimization model, and the modal loss factor sensitivity formula was deduced. Independent mesh filter method was introduced to avoid checkerboard appearance. An optimization program was accomplished for damping plate optimizing simulation. Results of simulation show that compared with the non-optimized method, the evolutionary structural optimization was more advantageous for realizing the viscoelastic material optimal layout, and the modal frequency variation was more stable. Harmonic response analysis was carried out for the damping plate to verify the topological optimization method, and the modal loss factor density index was introduced to evaluate the optimization performance. The results of the study show that the constraint damping plates can obtain better vibration suppression effects while the damping materials layout can maximize the modal loss factor. This method has strong practicability and high stability for the optimization design of damping structures.关键词
振动与波/约束阻尼板/模态损耗因子/棋盘格/动力学优化Key words
vibration and wave/constraint damping plates/modal loss factor/checkerboard/dynamic optimization分类
数理科学引用本文复制引用
贺红林,陶结,袁维东,肖智勇..约束阻尼板的渐进法结构减振拓扑动力学优化[J].噪声与振动控制,2016,(1):15-20,6.基金项目
国家自然科学基金（51265040）；江西省自然科学基金 （）
