【摘要】 针对油缸密封圈密封性能和摩擦阻力相互制约的问题,提出了仿生非光滑表面减阻技术的方法。以油缸密封圈为研究对象,研究不同活塞速度和仿生凹坑直径与减阻特性的相互关系。仿真结果表明:当压缩率为20%时,仿生非光滑密封圈产生的有效压应力满足了油缸密封圈密封性能;在活塞速度一定且凹坑直径为1.5 mm时减阻率达到最大;在凹坑直径一定时减阻率随着初始速度的增大而不断变大,速度为0.6 m/s时具有较好的减阻效果。更多还原

【Abstract】 Aiming at constraining between seal performance and friction of the cylinder piston,a drag reduction technology of bionic non-smooth surface is presented. The seal ring for the cylinder is chosen as the research object. The piston speed and the bionic pit diameter for the drag reduction effect have been studied. The simulation results show that the effective stress of bionic non-smooth sealing ring meets the requirement of cylinder seal tightness when the compression rate is 20%,and when the pit diameter is 1. 5 mm it will reach the maximum drag reduction rate under a certain piston speed,and the drag reduction rate is increasing with an increase of initial velocity and a certain diameter of pit; the seal ring has a stable drag reduction rate when the speed reaches 0. 6 m / s.更多还原