Related Resources: Design and Engineering General

Numerical Analysis Hybrid Spur Gears

Gears Engineering and Design

A Numerical Analysis of Hybrid Spur Gears with Asymmetric Teeth: Stress and Dynamic Behavior

Tufan G. Yılmaz1, Gültekin Karadere2 and Fatih Karpat2,*

Free Membership Minimum Required
Open: Hybrid Spur Gears with Asymmetric Teeth: Stress and Dynamic Behavior

1 Department of Motor Vehicles and Transportation Technologies, Bursa Uludag University,
2 Department of Mechanical Engineering, Bursa Uludag University, 16059 Bursa, Turkey

Abstract: Hybrid gears are composed of high-strength steel, carbon fiber reinforced plastic (CFRP), and adhesive bond to join these materials. In this study, the effect of rack tip radius (TR), drive side pressure angle (DSPA), and rim thickness (RT) on the stress of hybrid gears is investigated numerically. In addition, the stress results of hybrid gears are compared with steel gears that are used for validation of the numerical results. Single tooth stiffness (STS) values are calculated based on tooth deformations obtained from numerical analyses. The 2-DOF model is used to observe the influence of DSPA and RT on the dynamic factor (DF) and static transmission error (STE). According to the results, increasing RT has a positive effect on stress, STS, and STE, while DSPA is effective on the dynamic factor at most.

Gears are the most widely used powertrains in terms of utilization rate and application area. Due to the continuous and smooth transfer of power and motion and the constant ratio, gears are utilized from huge machines to the most miniature clock mechanisms. With several advantages, involute gears are the most often used gear [1,2]. With the developing technology, expectations have arisen to provide higher power and moment transmission from involute gears. For this purpose, designers have focused their work on different gear geometries. Gear geometry research has primarily concentrated on asymmetric involute gears. When comparing the symmetric gears, larger loads per unit facewidth can be carried by gear with asymmetric teeth