an analytical model of four-point contact rolling element

2007-7-12The third cylindrical element model is a mixture of cylindrical and general 3D elements The cylindrical element mesh refinement used outside the potential road contact region in the second cylindrical element model is also used in this model Inside the potential contact region the general element mesh from the all-general element model is used 2015-4-16An Analytical Model of Four-Point Contact Rolling Element Ball Bearings J Halpin Torrance CA USA 2:15PM ThermalCompTM Bearings: Thermally Compliant Bearings A Habibvand RBC/ITD Rancho Dominguez CA USA 2:45PM BREAK (in the Bearing Technology Exhibit area) 3:30PM

Analytic Tire Model

1974-7-30as the point of departure for developing the analytical procedures applicable to the asymmetric deformation case It is envisioned that the total effort of generating an analytical model of tire traction on a rigid textureless surface would require at minimum four years Three analytical tasks (see Table 1) would be performed in

2018-5-17For almost four decades semi-analytical expressions (simply named analytical in the following) were pro- thickness in mechanical devices like gearboxes rolling element bearings cam-tappet assemblies piston-ring- liner systems etc point contact WU/(2 )0 75 pH

Planetary gears are widely used in automobiles helicopters heavy machinery etc due to the high speed reductions in compact spaces however the gear fault and early damage induced by the vibration of planetary gears remains a key concern The time-varying parameters have a vital influence on dynamic performance and reliability of the gearbox

The Fig 1 shows the finite element analysis geometry model and the physical model of the pitch bearing (without weak zone) For the establishment of the weak zone of the pitch bearing the quenching zone and the non-quenching zone are distinguished by establishing a different zone and then the parameters are set in the material library of the ANSYS WORKBENCH to define the material properties

2020-4-9rolling process In doing so a coupling multi-variable simulation model for hot strip rolling was built using non-linear thermo-viscoplastic finite element method Fluctua-tions of roll force and torque about the steady-state operating point are derived and the effects of main process parameters such as rolling speed and strip reduction on

A nonlinear circular ring model with rotating effects for

2020-7-22good representation of shear deformations to get a mostly analytical model able to estimate the influence of non linearities Note that we focus on the behaviour of the tire and not on the solution of the global problem of a tire rolling on a real road So the contact

2019-6-20The stiffness of a rolling-element bearing arises mating elements to elastic from the resistance of the material of the deformation at the contact [3) The factors controlling it are grouped as: a) Jntemal Geometry - Dimensions of the elements and number of rolling elements the clearance contact angle and the

A novel dimensionless analytical model will also be derived The objective of this paper is to publish the models and results presented in Ref [1] and all these further en-hancements which should help better modeling any gear or rolling element race contact 2 Non-truncated Hertzian point contact cal-culations

2018-5-30and optimization in machines Therefore it is necessary to establish an accurate analytical model of the magnetic eld distribution in the air gap In recent years much progress has been made in analytical models e g equivalent magnetic circuit method nite element method magnetic-charge method and Fourier series decomposition method [21{23]

2020-7-22good representation of shear deformations to get a mostly analytical model able to estimate the influence of non linearities Note that we focus on the behaviour of the tire and not on the solution of the global problem of a tire rolling on a real road So the contact

2016-1-1In the analytical model of a linear feeding stage [10] the rigidity of linear guide modules was also taken into account However the rolling interfaces between the guide rail and slider were oversimplified Briefly the ball screw feed drives have a strong influence on

2018-12-6Within the simulation model the contact surfaces of the forming tools are meshed as rigid bod-ies Due to high pressure stresses the metal sheet is numerically discretized by solid elements which analytical description of the contact points is possible Within this approach the contact point related to

2020-7-15A decoupled slow speed friction torque model has been developed to predict the running torque of a double-arched angular contact bearing when operating as a four-point as well as a two-point contact bearing The load distribution model from Amasorrain et al (2003) and the kinematics model developed by Leblanc and Nelias (2007) have been combined after ignoring centrifugal and

The Role of Estimating the Stiffness of Rolling Element

2019-6-20The stiffness of a rolling-element bearing arises mating elements to elastic from the resistance of the material of the deformation at the contact [3) The factors controlling it are grouped as: a) Jntemal Geometry - Dimensions of the elements and number of rolling elements the clearance contact angle and the

2019-8-15Multiscale computational scheme for semi-analytical modeling of the point contact of inhomogeneous materials The finite element model shows indicating that the composites with clusters have a shorter rolling contact fatigue life than that of composites with random distribution

2019-5-29The loaded contact angles between rolling element – inner race and rolling element – outer race are the same when centrifugal forces are neglected The loaded contact angle αj is given: (9) tanαj = ∗ ∆zj ∗ ∆rj The ball races contact can be computed from the classical Hertz point – contact theory for a positive elastic deformation

2018-10-1An analytical model of elastic deformation of the rolls based on the influence function method was developed to simulate the rolling process on 6-high single cold mill focusing on the effects of rolling parameters such as entry thickness reduction rate resistance of

2020-6-29Static radial load which causes the same contact stress at the center of the most heavily loaded rolling element/raceway contact as the contact that occurs under the actual load conditions The static equivalent radial load for radial and angular contact ball bearing and radial roller bearing is the greater of the two values given by P 0r = X

bearings with one two or three rows of rolling element and we distinguish between balls and rollers Figure 1 points to a typical arrangement of four contact point slewing bearing Figure 1 also shows the usual load system acting on bearing in axial or radial direction

2016-10-27The experimental validation of a mathematical ball bearing model with localized outer race defects is presented in this paper The bearing is considered as a mass – spring – damper system considering each rolling element as a contact spring – damper pair based on Hertz equations for contact deformation moving along the races In