摘要
针对减振装置工作时温升对密封件及系统可靠性影响较大的问题,分析了油液通过阻尼阀生热的机理。根据牛顿冷却定律和热传导方程推导了各介质之间不同换热方式下的热量传递表达式,通过热力学第一定律创建了单筒式液压减振器的热学数学模型,仿真分析了相关参数对油液温升的影响规律。编程分析了筒式减振器缸体结构参数、外界激励以及空气流速对其油液温升的影响规律。
The increased temperature influences greatly on reliability of seal and system when shock absorber is working,the mechanism of heat generation when oil passes damping valve is analyzed.Heat transfer expressions are deduced according to the Newton＇s law of cooling and heat conduction equation,the physical model of shock absorber which just has single cylinder is built by first thermodynamic rule,the rules of absorber structure parameters influence on the increased oil temperature are simulated.The influence rules of absorber structure parameters,exterior excitation and air speed on the increased oil temperature are also analyzed.
出处
《汽车技术》
北大核心
2008年第2期25-27,共3页
Automobile Technology
基金
部级装备预先研究基金(623010202.4)
关键词
筒式减振器
油液温度
热力学模型
仿真
Vehicle shock absorber,Oil temperature,Thermodynamic model,Simulation
