摘要
针对潜艇内机械设备减振降噪问题,提出优化隔振装置浮筏结构几何参数的方法提高减振效果。以一种平置板架式浮筏为研究对象,在模态分析的基础上,以几何尺寸为设计变量、总体积为约束条件、固有频率为目标函数,采用APDL语言零阶优化方法对其进行结构优化。结果表明,优化后的结构在总体积基本不变的前提下各阶固有频率均得到提升,增加了材料的利用率,形状更为合理且能够更好地起到减振效果,验证了优化方案的可行性,对浮筏结构设计具有一定参考价值。
Aiming at the problem of vibration and noise reduction of mechanical equipment in submarine,the geometric parameters of floating raft structure of commonly used vibration isolation device were optimized to improve the vibration reduction effect.The commercial software ANSYS was used to study a commonly used flat plate-frame floating raft.On the basis of its modal analysis,the APDL language zero-order optimization method was used to optimize its structure,taking the geometric size as the design variable,the total volume as the constraint condition,and the natural frequency as the objective function.The results showed that the natural frequencies of each order of the optimized structure were improved under the premise that the total volume was basically unchanged,the utilization rate of materials was increased,the shape was more reasonable,and the vibration reduction effect was better.The feasibility of the optimization scheme was verified,and it had certain reference value for the design of floating raft structure.
作者
徐匡迪
游彩霞
何雪松
XU Kuangdi;YOU Caixia;HE Xuesong(School of Automotive Traffic Engineering,Wuhan University of Science and Technology,Wuhan 430070,Hubei,China;Key Laboratory of Ship Vibration and Noise,China Ship Research and Design Center,Wuhan 430000,Hubei,China)
出处
《农业装备与车辆工程》
2023年第10期83-87,共5页
Agricultural Equipment & Vehicle Engineering
关键词
结构优化
浮筏结构
模态分析
固有频率
structure optimization
floating raft structure
modal analysis
natural frequency
