# Load contact analysis model of herringbone gear with centering error

Based on the helical gear LTCA model obtained by Litvin et al. Based on the finite element loading contact analysis principle, the herringbone gear loading analysis model is regarded as the parallel connection of the left and right helical gear contact models. According to the gear meshing theory and... # Research status of gear strength analysis methods

The gear strength calculation is based on the calculation formula proposed by and. Various coefficients are used to correct the material strength and gear load, and the influence of gear accuracy is considered. The calculation method close to the critical load is the main method. There are still many... # Tooth surface contact analysis of hypoid gear

Figure 1 shows the gear pair meshing coordinate system, S1 and S2 are the dynamic coordinate system of small wheel and large wheel respectively, SS is the gear tooth meshing coordinate system, and H is the axial assembly distance, Σ Is the axle intersection angle, and V is the... # Bending fatigue life analysis of gear based on ABAQUS / FE-SAFE

ABAQUS / FE-SAFE is used for joint simulation. The analysis process is as follows: firstly, the fatigue analysis software FE-SAFE needs to input the analysis results obtained in ABAQUS finite element software, redefine the analysis results, and define the load of previous tests according to the gear bending fatigue... # Establishment of gear geometric analysis and mechanical analysis

In the establishment of mechanical model, the gear tooth is simplified as a cantilever beam, and the contact state under load is simplified as a contact line along the long axis of the instantaneous contact ellipse. In the 1980s, the calculation method of gear contact strength was obtained based... # Finite element analysis of internal modified gear

Because the working condition of the gear is the same when the inner gear plate and the outer gear contact meshing, the finite element analysis effect is the same, so two pairs of meshing gears are selected for finite element analysis. The hexahedral mesh is used, with 175179 nodes.... # Dynamic analysis of internal modified gear

According to the mechanical model of internal gear pair and gear dynamic model, the dynamic model of internal modified gear in this paper is created, as shown in Figure 1. In Figure 1, K is the generalized contact stiffness; E is the gear transmission error; C damping coefficient of... # Analyzes the causes of fatigue fracture of mechanical gears

In fact, the so-called fatigue tooth breaking problem is that the mechanical gear breaks, and the whole spur gear will break according to the extension direction of the mechanical gear. Once the area of the mechanical gear is large, the end of the mechanical gear will break. Generally speaking,... # Gear system model and dynamic response analysis under pitting corrosion

By establishing a simplified six degree of freedom dynamic mathematical model of gear system and a rigid body dynamic analysis model of gear system with advanced gear feature module and bearing module, the dynamic response characteristics of the system without pitting and with pitting are studied, and the influence... # Time-varying meshing stiffness analysis of gear under fatigue pitting corrosion

By referring to the physical causes of fatigue pitting on tooth surface and the characteristics of pitting pits, different mesh stiffness pitting mathematical models were established by approximating the geometric characteristics of pitting pits to study the response characteristics of gear’s comprehensive time-varying mesh stiffness. The main research contents... 