施工升降机吊笼结构动态特性仿真分析与拓扑优化  

Structural dynamic analysis and topology optimization of building hoist cage

作　　者：涂宇 王怡 罗建阳[2] 胡自化[3] 杨丽 汤妙妙 TU Yu;WANG Yi;LUO Jiangyang;HU Zihua;YANG Li;TANG Miaomiao(Hunan Institute of Traffic Engineering,Hengyang 421001,China;School of Civil Engineering,Central South University,Changsha 410075,China;School of Mechanical Engineering and Mechanics,Xiangtan University,Xiangtan,411105,China)

机构地区：[1]湖南交通工程学院,湖南衡阳421001 [2]中南大学土木工程学院,湖南长沙410075 [3]湘潭大学机械工程与力学学院,湖南湘潭411105

出　　处：《湘潭大学学报（自然科学版）》2023年第6期78-84,共7页Journal of Xiangtan University(Natural Science Edition)

基　　金：湖南省自然科学基金项目(51908481);湖南省教育厅科学研究重点项目(22A0693,21A0608)。

摘　　要：针对施工升降机中吊笼存在的共振问题,开展了施工升降机吊笼结构的动态特性仿真分析与拓扑优化.该文通过ANSYS软件研究了SC200型吊笼结构的模态振动特性,分析其模态振动频率区间;并利用拓扑优化方法,以降低6阶模态振动频率为目标对普遍型吊笼结构进行拓扑迭代优化,并基于优化结果设计了新型吊笼结构;从而减少新型吊笼的模态振动频率与外界激振频率的重叠区间,提升吊笼在运行中的安全性和稳定性.仿真结果表明:优化前的吊笼的前6阶固有频率分布在7.68~20.76 Hz,6阶模态的变形量达12.61 mm;优化后的新型吊笼结构的前6阶固有频率为6.12~18.88 Hz,区间分布范围和峰值有效降低,6阶模态的变形量为9.58 mm,降幅达24.03%.因此,吊笼优化后的新型吊笼结构在防止共振和结构稳定性方面都有更佳的表现.The simulation analysis and topology optimization of the dynamic characteristics of the cage structure of the construction hoist are carried out for the resonance problem of the cage in the construction hoist.In this paper,the modal vibration characteristics of the current universal cage structure are studied by ANSYS software,and its modal vibration frequency range is analyzed;and the topology optimization method is used to optimize the universal cage structure iteratively with the goal of reducing the 6th order modal vibration frequency,and a new cage structure is designed based on the optimization results;thus,the overlapping range between the modal vibration frequency of the new cage and the external excitation frequency is reduced,and the safety and stability of the cage in operation are improved.The simulation results show that:the first six steps of the cage before optimization inherent frequency distribution are 7.68~20.76 Hz,and the deformation of the 6th order mode is 12.61 mm;the first six steps of the optimized new cage structure inherent frequency are 6.12~18.88 Hz,and the distribution range and peak value of the interval are effectively reduced,and the deformation of the 6th order mode is 9.58 mm,which is reduced by 24.03%.Therefore,the new cage structure after cage optimization has better performance in preventing resonance and structural stability.

关 键 词：施工升降机 吊笼 模态分析 拓扑优化 谐响应分析 

分 类 号：TH211[机械工程—机械制造及自动化]