2500型压裂车车架结构多目标拓扑优化设计  

Multi-objective Topology Optimization on Frame of 2500 Fracturing Truck

作　　者：高媛[1] 王红玲[1] 单东升[2] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]北方重工集团有限公司,沈阳110141

出　　处：《石油矿场机械》2015年第5期49-53,共5页Oil Field Equipment

基　　金：辽宁省科技创新重大专项(201303003)

摘　　要：针对压裂车行驶路况恶劣、整车质量大以及执行压裂作业时振动剧烈而导致车架结构容易破坏失效的情况,基于SIMP变密度法对2500型压裂车车架进行拓扑优化设计。建立车架结构多目标拓扑优化数学模型,采用折衷规划法定义多工况刚度拓扑优化目标函数,平均频率法定义动态频率拓扑优化目标函数,通过优化获得同时满足结构刚度和动态特性要求的压裂车车架拓扑结构。对比优化前后车架性能,该车架结构设计合理,同时改善了各项综合性能,从而为车架结构优化设计提供了一种行之有效的方法。Poor road conditions, large weight and working vibration lead to the damage and failure of fracturing truck frame. Topology optimization on 2500 fracturing truck frame is conducted based on the SIMP （solid isotropic material with penalization） variable density method. The mathematical model of multi-objective topology optimization is established, in which both the compliance and eigenfrequencies are regarded as objective. Compromise programming method is a- dopted to define the objective of multi-stiffness topology optimization, while mean frequency method is adopted to settle the eigenfreqnencies of free vibration optimization. A reasonable topol- ogy structure of frame which meets the multi-stiffness and dynamic characteristics requirements at the same time is obtained based on this approach. Performance comparison of the frames before and after optimization indicates that the new structural design is rational and comprehensive prop- erties are improved, which provides an effective method for frame structure optimization design.

关 键 词：压裂车 副车架 结构 拓扑优化 

分 类 号：TE934.202[石油与天然气工程—石油机械设备]