摘要
为了提高大口径舰炮摇架的振动性能,满足其结构设计轻量化要求,以摇架为研究对象进行结构优化。首先基于密度法中的SIMP法,以质量为优化目标,运用ANSYS/Workbench对摇架进行3次拓扑优化,得到了摇架的拓扑结构;其次针对摇架的拓扑结构继续进行尺寸优化,以摇架的上板宽d1、下板前段宽d2、下板后段与前段的宽度差d3为设计变量,质量为优化目标,建立摇架尺寸优化数学模型;最后基于遗传算法进行尺寸优化,得到3组最优解,通过瞬态分析方法,计算出舰炮发射时摇架的最大位移,从3组解中确定出摇架的最优结构。结果表明:经过结构优化后,摇架的质量减小3.014%,优化后的摇架最大位移较之前减小0.35021 mm。
In order to improve the vibration performance of large caliber naval gun rocker and meet the requirements of lightweight structure design,the cradle was taken as the research object to optimize the structure.Firstly,based on the SIMP method in the density method,taking quality as the optimization goal,the topological structure of the cradle was optimized three times by using ANSYS/Workbench.The second step was the size optimization of the cradle,taking the upper plate width d1,the lower plate’s front section width d2,the width difference between the lower plate’s back section and the front section d3 as the design variables,and quality as the optimization goal.The mathematical model of cradle size optimization was established.Finally,the size optimization was done based on genetic algorithm,three groups of optimal solutions were obtained.The maximum displacement of the shaker was calculated by transient analysis method,and the optimal structure of the rocker was determined from the three sets of solutions.The results showed that after structural optimization,the mass of the rocker was reduced by 3.014%,and the maximum displacement of the optimized rocker was reduced by 0.35021 mm.
作者
富威
吴琼
龚军军
赵书樊
左沅昊
FU Wei;WU Qiong;GONG Junjun;ZHAO Shufan;ZUO Yuanhao(College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《应用科技》
CAS
2020年第1期118-122,共5页
Applied Science and Technology
关键词
大口径
舰炮
摇架
有限元
拓扑优化
遗传算法
尺寸优化
瞬态分析
large caliber
naval
cradle
finite element
topology optimization
genetic algorithm
size optimization
transient analysis
