Failure path based modified gear mesh stiffness for spur gear pair with tooth root crack

Review on dynamics of cracked gear systems

“…10). Based on the crack propagation paths determined by FRANC, Pandya and Parey [7] presented an improved TVMS calculation method, which adopts straight lines with different slopes rather than only one straight to simulate the predicted crack path (see Fig. 11), and compared the difference of the TVMS under two crack propagation paths: a straight line and multiple straight lines.…”

“…For the spur gear, the predicted crack propagation path agrees with the measured results. By using FRANC, Glodez et al [5] simulated the crack propagation using Paris equation, and Pandya and Parey [6][7][8] simulated the propagation paths of the crack along the tooth root using the displacement correlation method, and Kramberger et al [9] developed a calculation model for the evaluation of the service life of gears with a crack along the gear tooth root.…”

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

“…Based on FE method, Ma et al [2] established a FE model of a geared rotor system and http://dx.doi.org/10.1016/j.engfailanal.2014. 11.018 1350-6307/Ó 2014 Elsevier Ltd. All rights reserved. analyzed the effects of tip relief on lateral-torsional coupling vibration responses of the system.…”

“…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.…”

The nonlinear dynamics response of cracked gear system in a coal cutter taking environmental multi-frequency excitation forces into consideration

“…Among industry and academy the gear tooth crack mechanism have received increasing interests in the past decade [7], and many researches have investigated Fig. 4 Curve of magnitude-frequency characteristic of the main resonance of the coal cutter gear system with different amplitudes of the second force dynamic characteristics of cracked gears from aspects of material poverties, loading conditions and manufacturing errors [8][9][10][11][12][13][14][15][16]. Yu et al [17] investigated the effects of cracked gear tooth on mesh stiffness.…”