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减振器生热机理仿真分析 被引量:3

Simulation Analysis of Heat Generation Mechanism of Vehicular Shock Absorber
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摘要 为了准确获知车辆减振器内部温度分布状况,进而为其可靠性设计奠定基础,以某车辆减振器对称性结构特点为依据,建立了具有较高精度的节流阀系流体网格模型。应用计算流体动力学(CFD)数值方法建模,并采用CFX仿真软件对其进行谐波激励下的模拟,计算出工作缸管内强迫对流换热的传热过程,进而得出此减振器油液的热量产生过程和温度场分布情况。研究结果表明:外界激励推动油液流经节流阀系过程中产生的摩擦和通过节流阀系之后的涡旋运动导致油液分子间的强烈碰撞,使流经此区域的油液温升迅速。随着热量的传递,减振器内部流场温度逐渐均匀。应用此仿真方法,可明确车辆减振器的温升过程和生热机理,分析结论能为完善减振器温升理论的研究提供参考。 为了准确获知车辆减振器内部温度分布状况,进而为其可靠性设计奠定基础,以某车辆减振器对称性结构特点为依据,建立了具有较高精度的节流阀系流体网格模型。应用计算流体动力学(CFD)数值方法建模,并采用CFX仿真软件对其进行谐波激励下的模拟,计算出工作缸管内强迫对流换热的传热过程,进而得出此减振器油液的热量产生过程和温度场分布情况。研究结果表明:外界激励推动油液流经节流阀系过程中产生的摩擦和通过节流阀系之后的涡旋运动导致油液分子间的强烈碰撞,使流经此区域的油液温升迅速。随着热量的传递,减振器内部流场温度逐渐均匀。应用此仿真方法,可明确车辆减振器的温升过程和生热机理,分析结论能为完善减振器温升理论的研究提供参考。
出处 《四川大学学报(工程科学版)》 EI CAS CSCD 北大核心 2011年第S1期240-245,共6页 Journal of Sichuan University (Engineering Science Edition)
基金 国家部委基金资助项目(1030020220707)
关键词 减振器 温度分布 强迫对流 传热 生热机理 shock absorber temperature distribution forced convection heat transfer heat generation mechanism
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参考文献9

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共引文献16

同被引文献41

  • 1陈轶杰,赵博,张旭,郑冠慧,宁丹.基于随机激励的油气悬挂温升现象研究[J].机械强度,2010,32(6):869-872. 被引量:6
  • 2张立军,余卓平,阳鹏.汽车液压减振器热-机耦合特性试验研究[J].汽车技术,2005(4):28-31. 被引量:9
  • 3张立军,余卓平,欧阳鹏.汽车液压减振器机械阻尼特性试验研究[J].噪声与振动控制,2005,25(3):33-36. 被引量:6
  • 4张立军,余卓平,阳鹏,尹东晓.液压减振器热动力学及其影响因素理论分析[J].振动与冲击,2006,25(1):95-98. 被引量:5
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