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ARTICLE
Failure analysis and optimization design of suspension support holes for gearbox cases
1
School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, China
2
Zhengzhou Yutong Bus Co., Ltd., Zhengzhou 450001, China
3
School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou, China
4
Zhengzhou Research Institute of Mechanical Engineering Co., Ltd., Zhengzhou, China
Submission date: 2023-02-17
Final revision date: 2023-05-25
Acceptance date: 2023-05-25
Online publication date: 2023-06-19
Publication date: 2023-07-31
Corresponding author
Leyu Wei
Materials Science and Engineering, North China University of Water Resources and Electric Power, China
Materials Science and Engineering, North China University of Water Resources and Electric Power, China
Journal of Theoretical and Applied Mechanics 2023;61(3):533-544
KEYWORDS
TOPICS
ABSTRACT
The suspension hole of a gearbox case was cracked after the mining test vehicle has covered
7000 km. In order to analyze and solve this problem, in this paper, based on the modal
analysis of the suspension system and failure analysis of the faulty parts, the finite ele-
ment model of the powertrain system was established using Ansys, and strength analysis
of the gearbox case was carried out. According to the analysis results, improvement and
optimization measures were proposed. The analysis results show that the maximum stress
of the optimized gearbox case was reduced by 6.9%, and the test vehicle could operate for
50 000 km without failure after the improvement, which verified the effectiveness of those
measures. Accumulating experience in the gearbox case design and simulation, modal anal-
ysis and finite element analysis were combined to quickly identify the failure causes of the
suspension support hole, and targeted improvement measures were taken, which effectively
shortened the research and development cycle and saved production costs.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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