Dynamic Contact Simulation Analysis of Spiral Bevel Gear Based on ANSYS/LS-DYNA

2014 ◽  
Vol 912-914 ◽  
pp. 649-652
Author(s):  
Li Yan Feng ◽  
Ying Juan Liu ◽  
Wen Zhi Xie ◽  
Jing Wei Huang
Keyword(s):  
Simulation Analysis ◽  
Dynamic Contact ◽  
Bevel Gear ◽  
Spiral Bevel Gear ◽  
Calculation Results ◽  
Spiral Bevel ◽  
Dynamic Meshing ◽  
Meshing Process ◽  
Different Parts ◽  
Over Time

The meshing of spiral bevel gear is a very complicated nonlinear process.In order to obtain a more realistic stress , we take a pair of spiral bevel gear on EMU as the example to construct an accurate modeling with Pro/E and analyze its dynamics contact simulation with ANSYS/LS-DYNA. It calculates the distribution of the tooth surface’s stress during the entire dynamic meshing process. The curves of the tooth’s effective stress on different parts changing over time are obtained. At last, we make theoretical analysis on the calculation results.

Tooth Contact Analysis of the Double Circular Arc Tooth Spiral Bevel Gear

2010 ◽  
Vol 44-47 ◽  
pp. 3711-3715
Author(s):  
Rui Liang Zhang ◽  
Tie Wang ◽  
Hong Mei Li
Keyword(s):  
Simulation Analysis ◽  
Contact Analysis ◽  
Bevel Gear ◽  
Spiral Bevel Gear ◽  
Tooth Contact Analysis ◽  
Element Analysis ◽  
Tooth Contact ◽  
Circular Arc ◽  
Profile Characteristic ◽  
Spiral Bevel

Tooth contact analysis is an effective tool for meshing analysis of the double circular arc profile spiral bevel gear (DCAPSBG), as well as the basis for loading tooth contact analysis and finite element analysis. Applying the principle of tooth contact analysis (TCA) and the tooth profile characteristic of the DCAPSBG, this paper introduced and discussed the key contents and method of TCA computer programming for numerical simulation analysis of the transmission meshing quality of DCAPSBG. The TCA program developed in this paper, which had been verified by real examples, provided an effective approach for the design of DCAPSBG.

scholarly journals Cutter Head Approximation Machining Method of Line Contact Spiral Bevel Gear Pairs Based On Controlling Topological Deviations

2021 ◽  
Author(s):  
Mingyang Wang ◽  
Yuehai Sun
Keyword(s):  
Simulation Analysis ◽  
Gear Tooth ◽  
Bevel Gear ◽  
Spiral Bevel Gear ◽  
Line Contact ◽  
Bevel Gears ◽  
Spiral Bevel ◽  
Tooth Flank ◽  
Cutter Head ◽  
The Mathematical Model

Abstract To improve the meshing performance and increase the bearing capacity and service life of spiral gear pairs, the cutter head approximation machining method based on controlling topological deviations was proposed to solve the problem where line contact spiral bevel gears with tapered teeth depth cannot be directly machined by cutter heads. First, the mathematical model of line contact conjugate flanks was established, and meshing equations and conjugate flank equations of bevel gear pairs were derived. Second, the gear tooth flank was set as the datum tooth flank for priority machining, and the pinion theoretical tooth flank which is fully conjugate with the gear tooth flank and the pinion machining tooth flank matching with the gear were solved. Then, the geometric topological deviations model of the comparison between the pinion machining tooth flank and its theoretical tooth flank can be established. Finally, with the pinion machining tooth flank approaching its theoretical tooth flank as the modification, the additional cutting motions and machining compensation parameters of cutter heads were obtained to control the pinion machining tooth flank deviations and reduce them to the allowable deviations of its theoretical tooth flank. The contact simulation analysis and rolling test verified the correctness of the line contact conjugate flank model and feasibility of the cutter head approximation machining method.

scholarly journals Modeling and analysis of transient lubrication characteristic of the helicopter main transmission spiral bevel gears in point contacts

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yanzhong Wang ◽  
Kai Yang ◽  
Xiaomeng Chu ◽  
Wen Tang ◽  
Changyong Huang
Keyword(s):  
Film Thickness ◽  
Contact Area ◽  
Bevel Gear ◽  
Spiral Bevel Gear ◽  
Spiral Bevel Gears ◽  
Oil Film ◽  
Bevel Gears ◽  
Lubrication Performance ◽  
Spiral Bevel ◽  
Meshing Process

AbstractAn engineering calculation model is introduced for point-contact elastohydrodynamic lubrication analysis of spiral bevel gears. This model can analyze transient lubrication characteristics of spiral bevel gears. The influence of the angle between the lubricant entrainment and the minor axis of the contact ellipse is included in this model. The contact parameters of the spiral bevel gear are calculated, which will change with time during the meshing process. The variation of lubricant film thickness during the meshing process of spiral bevel gears is unraveled. Due to the influence of entrainment velocity, the oil film thickness at the out mesh side is smaller than that at the enter mesh side under the same contact force. It is evident that the higher the pressure is, the larger the contact area will be. Meanwhile, the thickness of the oil film is reduced, and the oil film distribution in the contact area is relatively uniform. Taking helicopter main transmission spiral bevel gears as an example, this study finally calculates the distribution characteristics of the oil film thickness of the spiral bevel gear, and solves the lubrication performance of the spiral bevel gear under different working conditions.

Dynamic Contact Emulate Analysis of Logarithmic Spiral Bevel Gear with ANSYS/LS-DYNA

2011 ◽  
Vol 86 ◽  
pp. 531-534
Author(s):  
Qiang Li ◽  
Shu Qin Wu ◽  
Hong Bo Yan
Keyword(s):  
Stress Distribution ◽  
Three Dimensional ◽  
Logarithmic Spiral ◽  
Dynamic Contact ◽  
Bevel Gear ◽  
Engineering Practice ◽  
Spiral Bevel Gear ◽  
Tooth Contact ◽  
Depth Study ◽  
Spiral Bevel

For a new type of bevel gear-logarithmic spiral bevel gear, which stress mechanical properties are studied during the meshing process. Three-dimensional meshing models of logarithmic spiral bevel gear are established by Pro/ E. Because its tooth trace is conical logarithmic spiral, the paper proposes a new modeling method and successfully constructs the engagement model. Based on this, the gear dynamic contact emulation analysis is operated with ANSYS/LS-DYNA software in order to obtain stress distribution in the process of tooth contact. The tooth contact stress and tooth root bending stress magnitude, stress distribution and variation of cloud are analyzed. Contacting engineering practice, the results are in-depth study. Thus it can provide the theory basis for design and the application of this kind of new bevel gear.

Spiral Bevel Gear Dynamic Contact and Tooth Impact Analysis

2011 ◽  
Vol 133 (8) ◽  
Author(s):  
Pei-Yu Wang ◽  
Sih-Ci Fan ◽  
Zi-Gui Huang
Keyword(s):  
Finite Element ◽  
Contact Stress ◽  
Impact Analysis ◽  
Dynamic Contact ◽  
Bevel Gear ◽  
Dynamic Responses ◽  
Spiral Bevel Gear ◽  
Transmission Errors ◽  
Spiral Bevel ◽  
Gear Drives

A significant portion of the research on spiral bevel gear focused on contact stress and assembly flexibility (V and H check) values, while only a few studies investigated the relationship between transmission errors and rotational speed. This paper addresses and discusses an approach for 3D dynamic contact and impact analysis of spiral bevel gear drives. Dynamic models considering friction, gear clearance, and time-varying stiffness were established. Finite element software was utilized to analyze the dynamic responses of gear transmission, surface contact stress, and root bending stress of a spiral bevel gear pair. The dynamic model simulated the vibration behavior of an actual gear set under dynamic loading. The dynamic responses of the spiral bevel gear drives were obtained under differential rotational speeds of the driver and the driven resistance. The stiffness and elastic deformation of gear teeth were calculated using the finite element method with actual geometry and gear positions. After the impact analysis, the numerical simulation results of transient and steady-state transmission errors are obtained simultaneously. Using the fast Fourier transform method, frequency spectrums of the transient and steady states of the calculated transmission errors are obtained to enable the gearbox designer to avoid the resonance zone.

Simulation Analysis of Spiral Bevel Gear Tooth Surface Generation Based on VERICUT

2013 ◽  
Vol 273 ◽  
pp. 175-179
Author(s):  
Zhao Bin Hong ◽  
Zhao Jun Yang ◽  
Bai Chao Wang ◽  
Xue Cheng Zhang
Keyword(s):  
Simulation Analysis ◽  
Gear Tooth ◽  
Bevel Gear ◽  
Surface Generation ◽  
Tooth Surface ◽  
Spiral Bevel Gear ◽  
Generation Process ◽  
Gear Cutting ◽  
Nc Program ◽  
Spiral Bevel

Based on the deeply study on VERICUT, the generating process of spiral bevel gear surface is simulated in this paper. A certain surface generation process of spiral bevel gear is analyzed as an example. First the 3D solid models of gear cutting machine, cutter and gear blank are built. Then the NC program is compiled based on the generating principle of tooth surface. Finally the surface generating movement of spiral bevel gear is realized through selecting control system and importing the NC program. It can be indicated that the simulation analysis of surface generation can optimize the cutting movement and provide theoretical basis for the movement analysis of gear cutting.

scholarly journals Contact dynamics analysis of nutation drive with double circular-arc spiral bevel gear based on mathematical modeling and numerical simulation

2021 ◽  
Vol 12 (1) ◽  
pp. 185-192
Author(s):  
Yujing Su ◽  
Ligang Yao ◽  
Jun Zhang
Keyword(s):  
Load Capacity ◽  
Geometric Model ◽  
Dynamic Contact ◽  
Coupling Model ◽  
Bevel Gear ◽  
Drive System ◽  
Contact Dynamics ◽  
Spiral Bevel Gear ◽  
Circular Arc ◽  
Spiral Bevel

Abstract. This paper describes a dynamic mathematical model of a new type two-stage nutation drive system with double circular-arc bevel gears. The dynamic displacement–vibration coupling model takes into account the gyro torque and side clearance of the nutating gear. A numerical analysis geometric model of the nutation drive system is developed. The geometric model considers the time-varying and contact deformation of nutation gear meshing. Subsequently, the model is analyzed using the ANSYS/LS-DYNA software, and the dynamic contact characteristics of the nutation gear are calculated. The simulation results revealed that the nutation transmission of the double circular-arc spiral bevel gear is reliable. Moreover, the mathematical verification showed that the simulation is feasible and accurate. The research has important significance for improving the tooth load capacity and transmission stability of nutation drives.

A modified damping model of vector form intrinsic finite element method for high-speed spiral bevel gear dynamic characteristics analysis

2021 ◽  
pp. 030932472110188
Author(s):  
Xiangying Hou ◽  
Yuzhe Zhang ◽  
Hong Zhang ◽  
Jian Zhang ◽  
Zhengminqing Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Numerical Solutions ◽  
Bevel Gear ◽  
Spiral Bevel Gear ◽  
Vector Form ◽  
Good Efficiency ◽  
Spiral Bevel ◽  
Damping Model

The vector form intrinsic finite element (VFIFE) method is springing up as a new numerical method in strong non-linear structural analysis for its good convergence, but has been constricted in static or transient analysis. To overwhelm its disadvantages, a new damping model was proposed: the value of damping force is proportional to relative velocity instead of absolute velocity, which could avoid inaccuracy in high-speed dynamic analysis. The accuracy and efficiency of the proposed method proved under low speed; dynamic characteristics and vibration rules have been verified under high speed. Simulation results showed that the modified VFIFE method could obtain numerical solutions with good efficiency and accuracy. Based on this modified method, high-speed vibration rules of spiral bevel gear pair under different loads have been concluded. The proposed method also provides a new way to solve high-speed rotor system dynamic problems.

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