Research and analysis of gear stiffness excitation

The finite element method is used to verify and calculate the time-varying meshing stiffness of gears. In reference [29], chaari f et al. Derived the calculation formula of time-varying meshing stiffness for gear crack fault, proposed an analysis model for gear crack fault, quantified the relationship between gear crack degree and gear meshing stiffness, and then verified the rationality and accuracy of the formula through gear finite element model.

Ma and Pang et al. Established the finite element model of spur gear by using ANSYS software, and obtained the gear time-varying meshing stiffness under the influence of both delayed meshing and gear crack failure.

Calculation of meshing stiffness by experimental method, raghuwanshi NK Based on the theory of potential energy and material mechanics, the relationship between the bending strain of the root of healthy gear and the meshing stiffness of the gear is established. The meshing stiffness of the healthy gear is calculated by using the bending strain of the tooth root of the healthy gear. The bending strain and strain energy of the cracked gear are established According to the relationship between the release rates, the meshing stiffness of the cracked gear is calculated by using the root bending strain of the cracked gear; the meshing stiffness obtained by the experimental method is compared with the meshing stiffness obtained by the energy method, which verifies the correctness of the stiffness calculation by the experimental method.

Pandya y et al. Applied the traditional photoelastic technology to the meshing stiffness calculation of cracked and non cracked gears, and compared with the finite element method based on linear elastic fracture mechanics.

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