Arnold活塞环径向压力分布函数的研究

Research and Numerical Simulation of Distribution Function for Arnold Piston Ring Radial Pressure

基于现代活塞环设计方法,研究了Arnold径向压力分布函数表达式的理论依据,在此基础上提出了一种非仅由余弦函数构成的活塞环径向压力分布函数表达式,分析了该表达式的特性及优点,并用Matlab软件的仿真结果验证了函数与Arnold表达式的关系。结果表明,Arnold表达式可看作非仅由余弦函数的一个特例,非仅由余弦函数表达式形式上更为简洁普遍,其系数仅是压比p(π)/p_m和平均压力p_m的函数,更适合于活塞环的设计生产。

An non - cosine function expression of the radial pressure distribution on the piston ring was dis- cussed based on the modern designing theory of piston ring and the research of Arnold radial pressure distribution function, its characteristics Were analyzed, and the function was compared with the Arnold function expression of the radial pressure distribution making use of the simulate results on Matlab software. The compare result proves the latter is just a special case of the former, which is simpler and more general, and the coefficient in which is only the func- tion of p （π）/pm, and Pm. The distribution function suggested is propitious to designing and produced of piston rings.