压电驱动精密流量阀阀芯结构优化设计  

Structure Optimal Design of Piezo-driven Precision Flow Control Valve Spool

作　　者：张蕊华[1] 吴启帆[1] 易健[1] 肖俊[1] 程玉晨 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《润滑与密封》2016年第5期97-101,107,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(50905083;50965014;50775109);江西省自然科学基金项目(LY14E050002)

摘　　要：以压电驱动精密流量阀的阀芯及其周围流场为研究对象,通过建立有限元模型,应用Workbench平台对阀芯及其周围流场进行流固耦合分析。首先通过Fluid Flow(CFX)模块对流体域进行流场分析,得到阀稳态时的内部流体压力场的分布规律;再将流体分析结果导入Static Structural(Ansys)模块,对阀芯固体域进行静力学分析,得到流固耦合作用下阀芯的静变形云图及Von Mises应力云图。根据流固耦合分析结果,对阀芯进行结构参数优化。优化后,在保证阀芯工作可靠性的条件下,阀芯体积减少了13.5%,实现了阀芯的轻量化。Taking piezo-driven precision flow control valve spool and the flow field around it as the research object,the finite element model was established,and fluid-structure interaction of valve spool and the flow field around it were analyzed by using Workbench platform. Flow field analysis was carried out for flow domain by Fluid Flow( CFX) module firstly to obtain the distribution of internal fluid pressure field when valve is in steady state,then the fluid analysis results was introduced into Static Structural( Ansys) module,static analysis was carried out for spool solid domain to obtain the static deformation and Von Mises stress of spool under the fluid-structure interaction. According to the results of fluid-structure interaction analysis,the spool structural parameter was optimized. The optimization results show that under the condition of ensuring the reliability of the spool,the volume of spool is decreased by 13. 5% and the goal of volume lightweight is achieved.

关 键 词：压电驱动精密流量阀 阀芯 流固耦合 参数优化 轻量化 

分 类 号：TH124[机械工程—机械设计及理论]