中南大学学报（自然科学版）2011，Vol.42Issue(3)：664-670,7.
基于多频约束和解析灵敏度法的大型振动筛优化设计
Optimal design of large vibrating screen based on multiple frequencies constraints and analytical sensitivity
摘要
Abstract
Multiple frequencies constraints and analytical sensitivity methods were used in structural optimization design of stiffeners on the side plate of vibrating screen to lower the damage of side plate causing by high dynamic stress when the large vibrating screen works.The mass of side plate of vibrating screen was taken as object function, multiple frequencies were regarded as state parameters and an optimization criterion which is applicable to solve this kind of problem was given.Meanwhile, sensitivity characteristics of variable parameters were considered during the process of optimizaton.The results show that the optimization program with embedded analytical sensitivity calculation methods is of a higher solving precision and a more stable calculating process.After structure optimization, the mass of side plate is reduced by 8.27％ and two elastic deformation frequencies are increased by 1.37％ and 2.97％, respectively, and a better optimization effect is achieved.The analysis of the optimal vibrating screen presents that the mass of vibrating screen decreases by 2.35％ and three elastic deformation frequencies which are close to the working frequency increase by 14.17％, 12.29％ and 23.01％, respectively.The natural frequencies of vibrating screen are improved and modal frequency is far from working frequency of the exciting motor and thus the structural stiffness and reliability of vibrating screen is enhanced.关键词
多频约束/解析灵敏度/大型振动筛/优化设计分类
矿业与冶金引用本文复制引用
贺孝梅,刘初升,张成勇..基于多频约束和解析灵敏度法的大型振动筛优化设计[J].中南大学学报（自然科学版）,2011,42(3):664-670,7.基金项目
国家自然科学基金资助项目(50774084) （50774084）
中国矿业大学青年科研基金资助项(2009A059) （2009A059）
