Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Analytical and Numerical Study of the Contact Stress Field Between Two Curved Surfaces with an Elliptical Shape in a Crowned Gear
Submission Author:
geraldo cesar rosario de oliveira , SP
Co-Authors:
geraldo cesar rosario de oliveira, Fernando Silva
Presenter: geraldo cesar rosario de oliveira
doi://10.26678/ABCM.COBEM2021.COB2021-0317
Abstract
In this article, contact stress field between two gears was approximated as ellipsoidal curved surfaces according to generalized contact theory. Crowned teeth have surfaces modified lengthwise to produce localized contact. A static load was used to compare the results obtained in the numerical and analytical methods using general equation proposed by Hertz. Numerical methods applied in ANSYS® were Pure Penalty, Normal Lagrange and Multi-Point Constraint. Considering normal contact stress, Pure Penalty method in convex-convex configuration obtained result closest to analytical method while Normal Lagrange method obtained least difference in case convex-concave. It was proven that shear stress as expected, has a lot of influence on result, mainly on equivalent stress and normal Lagrange method obtained results closer to analytical method in this regard.
Keywords
Finite Elements, Contact Stresses, gear fatigue
