The effects of the shape of tooth profile modifications on the transmission error, bending, and contact stress of spur gears

Abstract

Nowadays, the basic requirements of gear transmissions are not limited to resistance and reliability, but often include good efficiency and low vibration and noise emissions. This article investigates the role of tooth flank micro-geometry in fulfilling these needs. A non-linear finite element approach has been conceived and exploited to investigate in detail the influence\ud of the shape of profile modifications (PMs) on transmission error, root stress, and contact pressure.\ud In this approach, the contact between teeth flanks is handled by ABAQUS general purpose contact algorithm without introducing any simplification based on gear geometry peculiarities.\ud The boundary conditions are defined so that it is possible to automatically run a sequence of static analyses. The numerical results are first assessed by comparison with experimental measurements and then a comparison of contact and bending stresses of the same gear with long linear and long circular PMs is presented and discussed. The results of these comparisons show\ud that the optimal amount of PMs is not independent of PM shape; hence, the procedures used to design linear PMs cannot be directly applied to the design of non-linear PMs

Fault features analysis of cracked gear considering the effects of the extended tooth contact

“…The key for simulation analysis is to obtain the accurate timevarying mesh stiffness (TVMS), which has a great influence on the gear pair vibration. The finite element (FE) method [1][2][3][4][5][6][7], analytical method (AM) [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] and analytical-FE approach [23][24][25] have been used to calculate the TVMS of gears. For AM and analytical-FE approach, they can offer a simple and effective way to calculate the TVMS under most conditions.…”

Tooth Profile Modification and Simulation Analysis of Involute Spur Gear

“…Barbieri et al [15] explored the performance of the gear pair with tooth profile modification by performing Loaded Tooth Contact Analysis. Numerous researchers like Tesfahunegn [16] established models of modified gear pair in Pro/E while analysing it in other software, which may lead to data loss.…”

Optimizing Gear Micro Geometry for Minimum Transmission Error When Considering Manufacturing Deviation

“…For example, Jiao [3] according to the gears meshing theory, considering the gear deformation, solved the static transmission error in different conditions and investigated the influence of center errors on static transmission error. Tesfahunegn [4], Velex [5] and Kissling [6] investigated the effects of the shape of tooth profile modifications on the transmission error. Frazer [7] used a validated, 3-D Finite Element Analysis (FEA) and Tooth Contact Analysis (TCA) program to optimize Gear Geometry for minimum TE.…”