Dynamic characteristic of aviation spiral bevel gear with ERSFD
Elastic ring squeeze film damper(ERSFD)was introduced into the spiral bevel gear drive(SBGD)to improve its dynamic characteristics.Based on the generalized Reynolds equation,the internal and external oil film control equations were established.The deformation of the elastic ring was obtained by semi-analytical method.After obtaining the ERSFD oil film force,an approximate model was established based on the radial basis function(RBF)neural network.A bidirectional fluid-structure interaction dynamic model of an 8 degree of freedom spiral bevel gear transmission system with ERSFD support was established.The steady-state response of the system was obtained by the block interation method.The results showed that the inner oil film pressure was distributed in segments along the circumference and asymmetrically distributed along the offset line.The existence of ERSFD effectively weakened the nonlinear relationship between oil film force and eccentricity.The increasing thickness of the elastic ring boss reduced the amplitude of the vibration response of the system,suppressed the chaotic behavior of the system within the speed range of 5 200-8 200 r/min,and effectively improved the dynamic characteristics of the spiral bevel gear transmission system.
elastic ring squeeze film damperspiral bevel gearReynolds equationnonlinearityfluid-structure interactionchaotic motion
万方数据
维普
