高空作业车风致振动响应的数值模拟研究  

Numerical Simulation Study of Wind-Induced Vibration Response on Aerial Platform

作　　者：蒋红旗[1,2] 茅献彪 闫靖宇[2] 

机构地区：[1]中国矿业大学深部岩土重点实验室,江苏徐州221008 [2]江苏师范大学机电工程学院,江苏徐州221116

出　　处：《机械设计与制造》2018年第1期126-128,共3页Machinery Design & Manufacture

基　　金：江苏省333工程人才资助项目(333GC2011001);江苏省大学生实践创新训练计划项目(201510320040Z);江苏省高校自然科学基金项目(16KJB460010)

摘　　要：随着高空作业车作业高度的不断增加,风荷载对高空作业车的振动影响也越来越大。为了研究高空作业车在风载荷作用下的风振响应特性,根据Davenport风速谱模拟得到了脉动风载荷时程,并施加在高空作业车有限元模型上,对GKZ型折臂式高空作业车两种作业工况进行了风振特性分析,获得了风载荷作用下高空作业车的位移和加速度响应时程,进一步得到了其频域特性。分析结果表明,该折臂式高空作业车的风振响应以顺风向为主,最大位移响应均方根达16.15mm;频域特性表明,该型作业车对低阶频率较为敏感。With the increasing of the aerial platform height,the influence of wind load on aerial platform become bigger and b igger.ln order to study the characteristics of wind-induced vibration response of the structure under wind load,according to the Davenport wind-speed spectrum simulation,the time history curve of fluctuating wind load was obtained and applied on the finite element model of aerial platform.By the wind-induced vibration characteristics analysis of of GKZ type folding arm type aerial platform under two kinds of operating conditions ,we have obtained the time histories curves of displacement and acceleration response of aerial platform under wind load,further its frequency domain characteristics have been obtained. Analysis results show that the wind induced vibration response of the folded arm aerial platform is mainly along the wind direction and the maximum displacement response is 16.15mm; Frequency domain characteristics indicate that this type of platform is sensitive to the low order frequency.

关 键 词：高空作业车 风载荷模拟 风振响应 数值模拟 时域特性 频域特性 

分 类 号：TH16[机械工程—机械制造及自动化]