scholarly journals Dynamic Vibration Characteristic Analysis for the Power-Split Transmission System Based on Loaded Tooth Contact Analysis

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Hao Dong ◽  
Yan Cao ◽  
Zhou Fang
Keyword(s):  
Transmission System ◽  
Contact Analysis ◽  
Gear Pair ◽  
Characteristic Analysis ◽  
Lumped Mass ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Dynamic Vibration ◽  
Power Split ◽  
Loaded Tooth Contact Analysis

In order to solve the dynamic vibration characteristics of the power-split transmission system, the system of the dynamic mechanical model is established. Firstly, according to the theoretical analysis method of the tooth contact analysis (TCA) and loaded tooth contact analysis (LTCA), the actual meshing process of each gear pair is simulated, and the time-varying mesh stiffness excitation is obtained, which can improve the numerical precision. Next, by using the lumped mass method, the bending-torsional coupling three-dimensional dynamical model of the power-split transmission is established. The identical dimensionless equations are deduced by eliminating the effect of rigid displacement and the method of dimensional normalization. Next, the frequency domain and time domain responses of this system are obtained. The dynamic load change characteristics of each gear pair are analyzed. The results show that establishment, solution, and analysis of the system dynamics model could provide a basis for the dynamic design and have an important significance for the dynamic efficiency analysis and dynamic performance optimization design of the power-split transmission. Through theoretical data compared with the experimental data, we verified the correctness of the method proposed.

scholarly journals Load-Sharing Characteristics of Power-Split Transmission System Based on Deformation Compatibility and Loaded Tooth Contact Analysis

2015 ◽  
Vol 2015 ◽  
pp. 1-11
Author(s):  
Hao Dong ◽  
Ling-ling Duan ◽  
Jun-an Zhang ◽  
Zhou Fang
Keyword(s):  
Load Sharing ◽  
Transmission System ◽  
Contact Analysis ◽  
Torsional Angle ◽  
Gear Pair ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Power Split ◽  
Loaded Tooth Contact Analysis ◽  
Deformation Compatibility

In order to implement the uniform load distribution of the power-split transmission system, a pseudostatic model is built. Based on the loaded tooth contact analysis (LTCA) technique, the actual meshing process of each gear pair is simulated and the fitting curve of time-varying mesh stiffness is obtained. And then, the torsional angle deformation compatibility conditions are proposed according to the closed-loop characteristic of power flow, which will be combined with the torque equilibrium conditions and elastic support conditions to calculate the transfer torque of each gear pair. Finally, the load-sharing coefficient of the power-split transmission system is obtained, and the influences of the installation errors are analyzed. The results show that the above-mentioned installation errors comprehensively influence the load-sharing characteristics, and the reduction of only one error could not effectively achieve perfect load-sharing characteristics. Allowing for the spline clearance floating and constrained by the radial spacing ring, the influence of the floating pinion is analyzed. It shows that the floating pinion can improve the load-sharing characteristics. Through the comparison between the theoretical and related experimental data, the reasonability and feasibility of the above-proposed method and model are verified.

Loaded Tooth Contact Analysis of Power-Split Gear Drives Considering Shaft Deformation and Assembly Errors

2015 ◽  
Author(s):  
Siang-Yu Ye ◽  
Shyi-Jeng Tsai
Keyword(s):  
Power Transmission ◽  
Planetary Gear ◽  
Load Sharing ◽  
Contact Analysis ◽  
Influence Coefficient ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Power Split ◽  
Loaded Tooth Contact Analysis ◽  
Compact Design

The power-split gear mechanisms is widely applied in power transmission because of the advantages of compact design, lighter weight and high power density. The load sharing and the load distribution are the important performance issues while designing the power split mechanisms. The paper propose a computerized approach based on the influence coefficient method for loaded tooth contact analysis of such the gear transmission. Not only the load sharing of the multiple contact tooth pairs and the loaded transmission errors, but also the distributed contact stresses and the corresponding contact patterns on all the engaged tooth flanks can be calculated by using the proposed LTCA approach. Some analysis results are also discussed with a study case of the first planetary stage of a compound cycloid planetary gear drive.

Modeling of Helical Gear Power Tri-Branching Transmission Based on Loaded Tooth Contact Analysis

2013 ◽  
Vol 372 ◽  
pp. 543-546
Author(s):  
Xiao Fang Yang ◽  
Zong De Fang ◽  
Yong Zhen Zhang ◽  
Yuan Fei Han
Keyword(s):  
Structural Model ◽  
Transmission Error ◽  
Helical Gear ◽  
Transmission System ◽  
Contact Analysis ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Actual Application ◽  
Loaded Tooth Contact Analysis ◽  
Numerical Precision

According to the principle of tri-branching, a mechanism structural model was developed to analyze the helical gear transmission system. On the base of loaded tooth contact analysis (LTCA), the load transmission error of each gear stage is simulated at the any engagement position, and the fitting curves of the torsion mesh stiffness are obtained, which can improve the numerical precision. The research results can be applied to analyze the actual application of tri-branching transmission system and provide a firm foundation for study the power-split and load-sharing characteristics.

Computer Aided Loaded Tooth Contact Analysis in Cylindrical Worm Gears

2004 ◽  
Vol 127 (5) ◽  
pp. 973-981 ◽  
Author(s):  
Vilmos Simon
Keyword(s):  
Contact Analysis ◽  
Worm Gear ◽  
Gear Pair ◽  
Contact Lines ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Computer Aided ◽  
Different Types ◽  
Worm Gears ◽  
Loaded Tooth Contact Analysis

A method for computer aided loaded tooth contact analysis in different types of cylindrical worm gears is proposed. The method covers both cases—that of the theoretical line and point contact. The geometry and kinematics of a worm gear pair based on the generation of worm gear teeth by a hob is presented. The full loaded tooth contact analysis of such a gear pair is performed. A computer program based on the theoretical background presented has been developed. By using this program the path of contact, the potential contact lines, the separations of mating surfaces along these contact lines, the load distribution and transmission errors for different types of modified and nonmodified worm gear pairs are calculated and graphically presented. The influence of gear tooth modifications on tooth contact is investigated and discussed.

scholarly journals Lubricated loaded tooth contact analysis for spur gear pair

2019 ◽  
Vol 8 (1) ◽  
pp. 23
Author(s):  
Callum Oglieve ◽  
Gajarajan Sivayogan ◽  
Homer Rahnejat ◽  
Mahdi Mohammadpour
Keyword(s):  
Spur Gear ◽  
Contact Analysis ◽  
Gear Pair ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Loaded Tooth Contact Analysis

scholarly journals Lubricated loaded tooth contact analysis for spur gear pair

2019 ◽  
Vol 8 (1) ◽  
pp. 23 ◽  
Author(s):  
Callum Oglieve ◽  
Gajarajan Sivayogan ◽  
Mahdi Mohammadpour ◽  
Homer Rahnejat
Keyword(s):  
Spur Gear ◽  
Contact Analysis ◽  
Gear Pair ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Loaded Tooth Contact Analysis

scholarly journals Loaded tooth contact analysis of curve-face gear pair

2017 ◽  
Vol 9 (10) ◽  
pp. 168781401772747 ◽  
Author(s):  
Chao Lin ◽  
Chunjiang He ◽  
Si-jia Gu ◽  
Xiao-yong Wu
Keyword(s):  
Contact Analysis ◽  
Gear Pair ◽  
Face Gear ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Loaded Tooth Contact Analysis ◽  
Curve Face

Computer Aided Tooth Contact Analysis in Cylindrical Worm Gears

2003 ◽  
Author(s):  
Vilmos V. Simon
Keyword(s):  
Contact Analysis ◽  
Worm Gear ◽  
Gear Pair ◽  
Contact Lines ◽  
Tooth Contact Analysis ◽  
Tooth Contact ◽  
Computer Aided ◽  
Different Types ◽  
Worm Gears ◽  
Loaded Tooth Contact Analysis

A method for computer aided loaded tooth contact analysis in different types of cylindrical worm gears is proposed. The method covers both cases — that of the theoretical line and point contact. The geometry and kinematics of a worm gear pair based on the generation of worm gear teeth by a hob is presented. The full loaded tooth contact analysis of such a gear pair is performed. A computer program based on the theoretical background presented, has been developed. By using this program the path of contact, the potential contact lines, the separations of mating surfaces along these contact lines, the load distribution and transmission errors for different types of modified and non-modified worm gear pairs are calculated and graphically presented. The influence of gear tooth modifications on tooth contact is investigated and discussed.

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