流固耦合影响下双圆弧斜齿齿轮泵转子力学特性研究  

Research on the Mechanical Characteristics of the Rotor of the Double Arc Helical Gear Pump Under the Influence of Fluid-Structure Coupling

作　　者：周群起 董庆伟[1] 李阁强[1] 刘理想 ZHOU Qun-qi;DONG Qing-wei;LI Ge-qiang;LIU Li-xiang(School of Mechatronics Engineering,He'nan University of Science and Technology,He'nan Luoyang 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《机械设计与制造》2023年第8期195-199,共5页Machinery Design & Manufacture

基　　金：河南省重点研发与推广专项(科技攻关)项目(202102210277)。

摘　　要：针对理论计算难以获得精确的双圆弧斜齿齿轮泵转子疲劳破坏和塑性变形问题,利用ANSYS Workbench实时数据传递建立双圆弧斜齿齿轮泵单向流固耦合模型,得到流场压力特性和压力载荷作用下双圆弧斜齿齿轮泵力学性能。通过对比分析流固耦合前后不同负载下的力学特性变化,研究流固耦合作用对双圆弧斜齿齿轮泵转子的变形与应力分布的影响。研究结果表明,流固耦合作用对转子结构影响较大,最大变形量都发生在两转子近轮缘位置,且变形量相差0.016063mm;最大等效应力都发生在转子啮合位置,且等效应力相差187.72MPa。转子啮合处相比其他位置更易发生疲劳破坏,为双圆弧斜齿齿轮泵转子的稳定性和结构优化提供了参考依据。Aiming at the problem of rotor fatigue failure and plastic deformation of double arc helical gear pump which is difficult to obtain by theoretical calculation,the unidirectional fluid-solid coupling model of double arc helical gear pump is established by using ANSYS Workbench real-time data transmission.The mechanical properties of double arc helical gear pump under pressure and pressure load are obtained.The effect of fluid-solid coupling on the deformation and stress distribution of the rotor of double arc helical gear pump is studied by comparing and analyzing the mechanical characteristics of different loads before and afier fluid-solid coupling.The result shows that the fluid-solid coupling had a great influence on the rotor structure,the maximum deformation occurred near the flange of the two rotors,and the difference of deformation was 0.016063mm;and the maximum equivalent force occurred in the rotor meshing position,and the diference of the equivalent force was 187.72MPa.The rotor meshing was more prone to fatigue failure than other positions,which provided a reference for the stability and structure optimization of the rotor of the double arc helical gear pump.

关 键 词：双圆弧斜齿齿轮泵 流固耦合 应力应变 模态分析 等效应力 

分 类 号：TH16[机械工程—机械制造及自动化] TH325