混凝土泵车臂架可靠度分析  

Reliability Analysis of Concrete Pump Truck Boom

作　　者：黄会荣[1] 张希 HUANG Hui-rong;ZHANG Xi(School of Mechanical and Electrical Engineering,Xi'an University of Architecture and Technology,Shaanxi Xi'an 710055,China)

机构地区：[1]西安建筑科技大学机电工程学院,陕西西安710055

出　　处：《机械设计与制造》2021年第9期42-46,50,共6页Machinery Design & Manufacture

基　　金：陕西省自然科学基金(2017JM5122)。

摘　　要：利用APDL语言建立了臂架的参数化模型,在置信水平95%的条件下应用PDS模块对混凝土泵车臂架进行了结构可靠度分析。执行循环1000次蒙特卡罗法计算,得到了臂架位移与应力的累积分布函数。进一步进行灵敏度求解,获得了影响臂架位移与应力的设计参数,得出了臂架长度与臂架宽度是两个主要的影响参数。使用响应面法分析,得到了两组关联参数影响臂架位移与应力变化的曲面。分析结果表明,两种方法求出的臂架位移值与应力值,其相对误差在5%以内。The parametric model of the boom is established byAPDL language,and the structural reliability of the boom is analyzed by PDS module under the condition of 95%confidence level.The cumulative distribution function of the displacement and stress of the boom is obtained by using Monte Carlo method with 1000 cycles.The design parameters that affect the displacement and stress of the boom are obtained by further solving the sensitivity.It is concluded that the length and width of the boom are the two main influencing parameters.The response surface method is used to analyze the influence of two sets of related parameters on the displacement and stress of the boom.The results show that the relative error of the displacement and stress of the boom calculated by the two methods is within 5%.

关 键 词：PDS模块 混凝土泵车臂架 位移与应力 灵敏度 可靠度 

分 类 号：TH16[机械工程—机械制造及自动化] TU646[建筑科学—建筑技术科学]