# Vibration characteristics of spur gear pair with spalling fault

Set the initial state of the spur gear pair to zero, set the rectangular peeling at the pitch circle of the driving wheel, and the width HS of the peeling area is 0.5 mm. Other parameters are shown in Table 1 to table 3, Parameters Driving wheel Driven wheel... # System equation of spur gear pair

The dynamic model of 8-DOF spur gear pair is established by Lagrange equation. The system equation is: Where: FM is the dynamic meshing force of spur gear; RB1 and Rb2 are the radii of the driving wheel and the driven wheel respectively; IF1 and IF2 are the moment of... # Flash temperature model of spur gear pair

For tooth surface contact temperature: Δ T. Mainly determined by the temperature of spur gear body Δ M and tooth surface flash temperature Δ F is composed of two parts, namely: Spur gear body temperature Δ M is generally assumed to be constant, and the tooth surface temperatures of... # Meshing stiffness of spur gear pair with spalling fault

It is assumed that the spalling fault shape of spur gear driving tooth surface is matrix (as shown in Fig. 1), where the spalling length is as, the spalling width is BS, and the spalling depth is HS. Then, according to the energy method, the analytical formula for calculating... # Vibration characteristics of spur gear pair with spalling fault due to tooth surface flash temperature

Involute spur gear pair is widely used in modern mechanical system because of its excellent performance. The working performance of spur gear pair is deeply affected by the meshing stiffness, so that the meshing stiffness becomes the main excitation source of the vibration of spur gear pair. Under the... # Verification of calculation accuracy of spur gear stiffness model

Select a spur gear to calculate its stiffness. The reason why spur gear is selected as the research object is that there are widely used empirical formulas for the calculation method of meshing stiffness of spur gear, and the calculation results can be compared. Moreover, the above calculation method... # Calculation of elastic deformation of spur gear teeth

From the previous analysis, as long as the elastic deformation of the gear teeth is obtained, the time-varying meshing stiffness can be determined. Therefore, we first discuss the calculation method of comprehensive elastic deformation of spur gear teeth. Spur gear teeth can generally be treated as simple plane mechanical... # Basic principle of time-varying meshing stiffness of spur gear

The dynamic excitation caused by the time-varying characteristics of meshing stiffness during gear meshing is called stiffness dynamic excitation of gear meshing, also known as stiffness excitation. This kind of excitation is one of the most important and basic dynamic excitation in gear transmission system. This section will explain... # Spur gear finite element method

Since the early 1970s, people have begun to use the finite element method to calculate the elastic deformation and tooth root stress of spur gear teeth. At first, it is mainly to calculate the deformation value of single tooth under load. Later, after a large number of finite element... # Reconstruction of reverse engineering model of involute cylindrical spur gear

1. Data preprocessing Because the point cloud data of the involute cylindrical spur gear measured by the three coordinate machine is regular and the part coordinates are consistent with the software, in the preprocessing stage, only the noise data caused by the influence of the measuring equipment and the... 