A certain type of gearbox is investigated for the problem that stiffness and damping bearings are difficult to be accurately determined then affect analysis vibration noise gearbox. Firstly, a coupled dynamic lumped parameter model three-stage helical gear system with consideration bearing stiffness, damping, transmission error established. The modal parameters obtained by using experimental method single-input multiple-output. equation joint identification established which based on theory...

The meshing and limit equations of worm drive usually have strong nonlinearities such as multiple solutions, solution nonexistence equation singularity. Meanwhile, the tooth surfaces are in nonconforming line contact, which often requires mesh refinement contact region for loaded analysis. These two challenges cause that modeling heavily relies on manual adjustment analysis is still rare especially when edge assembly error concerned. Focusing double enveloping hourglass (DEHW) with planar...

The optimum profile modification curve of a gear pair is usually determined according to the fluctuation minimization static transmission error (STE). For calculation STE, potential energy method dismisses correlative tooth deflection induced by body elastic coupling effects, and finite element requires high cost. In order simultaneously obtain accuracy efficiency, single calculated through analytical integration about Hertz contact pressure based on conformal map method. power series...

The research about internal flowpath optimization of wet friction clutch has significant effect on the reduce heat generating.Taking diameter and position nozzle as design parameters, maximum minimum lubricant pressure constraint conditions, RMS applied disc dual plate objective function, parametric FEM optimum model is established.Based method second order response surface, paper sets up surface function by structure parameter, optimizes through quadratic programming.The optimized obtained,...

In order to estimate the heating value of wet multi-plate friction clutch at idle state, heat-fluid coupling simulation oil way fluid field is carried out.Taking as research object, dynamic mesh technique adopted implement about in disc separation process.Based on actual state end process disengaging clutch, model established through combining energy conservation law with shear theory film.Then paper simulates temperature filed lubricant, and researches influence principle drive shaft speed...

For the non-conforming contact problem of spur and helical gear pair, total deformation pair is usually separated into a linear global term nonlinear local term. To calculate deformation, Hertz solution widely used while lubrication ignored. In order to account for effect elastohydrodynamic lubrication, calculated on basis multilevel multi-integration method in this work. Through comparison with results obtained by analytical general numerical integration method, effectiveness presented...