液力变矩器流体-固体耦合压力脉动分析

doi:10.3969/j.issn.1000-1093.2016.04.001

兵工学报 ›› 2016, Vol. 37 ›› Issue (4): 577-583.doi: 10.3969/j.issn.1000-1093.2016.04.001

• 论文 • 下一篇

液力变矩器流体-固体耦合压力脉动分析

闫清东^1,2，刘博深¹，魏巍^1,2

(1.北京理工大学机械与车辆学院, 北京 100081; 2.北京理工大学车辆传动国家重点实验室, 北京 100081)

收稿日期:2015-08-05 修回日期:2015-08-05 上线日期:2016-06-20
作者简介:闫清东(1964—)男教授博士生导师
基金资助:
国家自然科学基金青年科学基金项目（51475041）；国家部委预先研究项目（40402050202）；国家部委基础产品创新科研基金项目(VTDP-2104)

Pressure Load Fluctuation Analysis of Torque Converter Based on Fluid-structure Interaction

YAN Qing-dong^1,2， LIU Bo-shen¹， WEI Wei^1,2

(1.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;2.National Key Lab of Vehicular Transmission, Beijing Institute of Technology, Beijing 100081, China)

Received:2015-08-05 Revised:2015-08-05 Online:2016-06-20

摘要/Abstract

摘要： 在冲焊型高功率密度液力变矩器的设计过程中，需要考虑在油液非定常流动下叶片所受压力载荷脉动，以及在载荷脉动激励下结构的振动响应。采用基于动网格的流体-固体耦合方法，沿叶片入口至出口方向设定监测点，分析对应位置压力载荷脉动与叶轮振动时域特性，对载荷脉动进行频率转换并对叶轮模态进行频域分析。分析表明：涡轮叶片所受压力载荷脉动幅值最大处位于叶片入口与外环连接处；压力载荷脉动与叶片振动的幅值沿叶片入口到出口逐渐减弱，且随着速比升高载荷脉动幅值与叶片振动响应明显减弱；涡轮脉动峰值频率在叶轮第2阶与第3阶模态之间，随速比升高，压力载荷脉动频域幅值明显减弱。

关键词: 兵器科学与技术, 液力变矩器, 流〖JP9〗体-〖JP〗固体耦合, 压力脉动, 结构振动

Abstract: The load fluctuation and vibration of blade should be analyzed in the design of high power density and compact stamping-welded torque converter. The simulation is based on fluid structure interaction and dynamic mesh. The load fluctuation and vibration in time domain are extracted by setting the monitoring points along the blade from inlet to outlet. Fast Fourier transform and modal analysis are used in frequency domain analysis. The analysis results indicate that the max load fluctuation and blade vibration are at the inlet of blade because of the hydraulic impact, and the amplitudes of load fluctuation and blade vibration decay along inlet to outlet at a certain speed ratio. As the speed of turbine is higher, the amplitudes also decay. The peak frequency of load fluctuation is between the second-order and third-order modals, and also the amplitude of load fluctuation decreases at higher speed ratio.

Key words: ordnance science and technology, hydrodynamic torque converter, fluid-structure interaction, pressure fluctuation, structural vibration

中图分类号:

TH137.332

闫清东，刘博深，魏巍. 液力变矩器流体-固体耦合压力脉动分析[J]. 兵工学报, 2016, 37(4): 577-583.

YAN Qing-dong， LIU Bo-shen， WEI Wei. Pressure Load Fluctuation Analysis of Torque Converter Based on Fluid-structure Interaction[J]. Acta Armamentarii, 2016, 37(4): 577-583.

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液力变矩器流体-固体耦合压力脉动分析

Pressure Load Fluctuation Analysis of Torque Converter Based on Fluid-structure Interaction

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