Static/Dynamic Contact Finite Element Analysis for Tooth Profile Modification of Helical Gears

2011 ◽  
Vol 86 ◽  
pp. 384-388
Author(s):  
Yong Jun Wu ◽  
Jian Jun Wang ◽  
Qin Kai Han
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Vibration Reduction ◽  
Dynamic Contact ◽  
Tooth Profile ◽  
Element Analysis ◽  
Helical Gears ◽  
Profile Modification ◽  
Tooth Profile Modification ◽  
Static Contact

A precise approach for the tooth profile modification (TPM) of helical gear is presented in the paper based on the static contact finite element analysis (FEA). The high-precision finite element model of helical meshing gear pairs is established. The type and amount of TPM are accurately determined by the static contact FEA results. The dynamic contact simulations of helical gears with and without tooth modification are investigated to estimate the vibration reduction effect of the TPM. Moreover the numerical simulations are compared with the experimental results. Both results show that the proposed precise TPM of helical gears is effective on vibration reduction around the working load, and the dynamic contact simulation is effective on estimating the vibration reduction influence of the TPM.

Finite Element Analysis for Tooth Profile Modification of Gear-Box of Tracklayer

2010 ◽  
Vol 156-157 ◽  
pp. 621-624
Author(s):  
Yan Wang ◽  
Ji Sheng Ma ◽  
Hui Yong Deng ◽  
Hai Ping Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Contact Stress ◽  
Transmission Error ◽  
Tooth Profile ◽  
Element Analysis ◽  
Profile Modification ◽  
Tooth Profile Modification ◽  
Static Contact ◽  
Gear Box

The quasi-static contact finite element analysis of meshing gear of gear-box is computed by using MSC.Marc software, then transmission error and surface contact stress of meshing gear are computed in different tooth profile modification methods. Due to the large load fluctuation of tracklayer, the target of tooth profile modification is suggested, which is to minimize the peak value of tooth contact stress to the full, and not to increase the transmission error fluctuation of gear system.

scholarly journals Finite Element Analysis and Tooth Profile Modification Study on Traction Gear of High Speed and Heavy Load Locomotive

2015 ◽  
Vol 9 (1) ◽  
pp. 900-909
Author(s):  
Xiaochun Shi ◽  
Weidong He
Keyword(s):  
Finite Element ◽  
High Speed ◽  
Tooth Profile ◽  
Element Analysis ◽  
Heavy Load ◽  
Profile Modification ◽  
Tooth Profile Modification ◽  
Parameterized Model ◽  
Design Requirements ◽  
Transmission Gear

Base on the characteristics of high-speed and heavy-load locomotive traction gear, a pre-grinding hob was designed which increased the thickness of the dangerous tooth root section as much as possible. The deformation and stress of the traction gears were calculated through the parameterized model established by finite element method. The tooth profile modification was implemented considering three locomotive working conditions including starting, sustain, and rapid operation. Finally, the related tests verified that the optimized transmission gear was in accordance the design requirements, the effect was good.

The Dynamic Finite Element Analysis of Shearer’s Running Gear Based on LS-DYNA

2011 ◽  
Vol 402 ◽  
pp. 753-757 ◽  
Author(s):  
Hai Long Tong ◽  
Zhong Hai Liu ◽  
Li Yin ◽  
Quan Jin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Simulation Analysis ◽  
Dynamic Contact ◽  
Secondary Development ◽  
Element Analysis ◽  
Dynamic Finite Element ◽  
Dynamic Finite Element Analysis ◽  
Element Theory ◽  
Meshing Process

Base on contact kinetics finite element theory, proceed secondary development of road wheel and pin mesh’s nonlinear dynamic contact analysis in LS-DYNA module, and carry out contrast of simulation analysis, achieved stress, strain and dynamic identities that caused by meshing impact in the whole meshing process, accord with practice, can instruct product practice design.

Investigation Concerning Vibration Reduction of Self-Anchored Suspension Bridge under Vehicle Braking Forces

2010 ◽  
Vol 163-167 ◽  
pp. 2689-2692
Author(s):  
Meng Gang Yang ◽  
Zhu Qing Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Vibration Reduction ◽  
Suspension Bridge ◽  
Optimal Parameters ◽  
Longitudinal Displacement ◽  
Element Analysis ◽  
Cable Stayed Bridge ◽  
Floating System ◽  
Braking Force

Large longitudinal displacement would be generated by vehicle braking force in the girder of self-anchored suspension bridge, just as the floating system of cable-stayed bridge. In this paper, taking Pingsheng bridge as an engineering example, the vehicle braking force models are established according to traffic survey, furthermore dynamic response and vibration reduction of the bridge under vehicle braking force are investigated by finite element analysis. The results show that the longitudinal displacement of the girder is relatively large, and it can effectively be controlled by viscous dampers with optimal parameters.

Optimal Tooth Modifications for Spur and Helical Gears

1989 ◽  
Vol 111 (4) ◽  
pp. 611-615 ◽  
Author(s):  
V. Simon
Keyword(s):  
Regression Analysis ◽  
Computer Program ◽  
Linear Function ◽  
Load Distribution ◽  
Tooth Profile ◽  
Distribution Factor ◽  
Helical Gears ◽  
Profile Modification ◽  
Tooth Profile Modification ◽  
Load Distribution Factor

A method for the simultaneous calculation of optimal tooth tip relief and tooth crowning for spur and helical gears is presented in this paper. The tooth profile modification is described by a linear function. Two types of crowning are introduced: linear and parabolic. The optimization of the tooth modifications is based on the following conditions: (1) The teeth are entering in mesh smoothly, without interference. (2) The load distribution factor is minimized. A computer program is developed for the calculation of the optimal tooth tip relief and crowning for spur and helical gears. By using this program the influence of type and length of optimal crowning and length of tooth tip relief on load distribution factor is investigated. Also, the influence of gear parameters on optimal tooth profile modification is discussed. On the basis of the obtained results, by regression analysis an equation is derived for the calculation of the optimal tooth tip relief.

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