The current research on gear system dynamics mainly utilizes linear spring damping model to calculate the contact force between gears.However,this linear model
Pneumatic system has been widely used throughout industry,and it consumes more than billions kWh of electricity one year all over the world.So as to improve the
In order to resist on the cavitation erosion,many researchers try to change the solidity and tenacity of the coatings,but ignore the influence of surface charac