Volume 39, Issue 1 pp. 25-46
RESEARCH ARTICLE

Dynamic reliability analysis of gear transmission system based on sparse grid numerical integration and saddle-point approximation method

Junhua Chen

Junhua Chen

College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China

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Longmiao Chen

Corresponding Author

Longmiao Chen

College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China

Correspondence

Longmiao Chen, College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210000, P.R. China

Email: [email protected]

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Linfang Qian

Linfang Qian

College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China

Northwest Institute of mechanical and electrical engineering, Xianyang, China

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Guangsong Chen

Guangsong Chen

College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China

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Wei Miao

Wei Miao

College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China

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First published: 21 October 2022
Citations: 3

Abstract

Gear systems are widely used in various mechanical transmission systems. This paper aims to develop an effective and practical method for dynamic reliability analysis of gear transmission system. The proposed method can comprehensively evaluate the dynamic reliability of gear transmission system by adopting the fourth-moment SPA method. First, a nonlinear dynamics model of a single-stage spur gear transmission system is established, which simultaneously takes into account the nonlinear backlash, time-varying meshing stiffness, and static transmission error. After that, a dynamic reliability model for the tooth surface contact fatigue failure of gear system is established with the uncertainty of the motion, structure, and material parameters using stress-strength interference (SSI) theory. To be specific, the sparse grid numerical integration (SGNI) method is applied to solve the statistical characteristic parameters of the dynamic reliability of the system. The probability distribution of the performance function is obtained with the fourth-moment SPA method. Test examples show that the results of the proposed method are consistent with the results obtained by the Monte Carlo simulation (MCS) and superior to the maximum entropy with fractional moments (ME-FM) method, which verifies the effectiveness of this approach. Finally, the dynamic reliability of the gear transmission system with respect to load times is evaluated.

DATA AVAILABILITY STATEMENT

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