Volume 7, Issue 2, June 2019, Page: 21-29
Strength Performance Analysis and Improvement of Engine Mounting Bracket for a Commercial Vehicle
Lv Lin, Qingdao University of Technology, College of Machinery and Automobile, Qingdao, China
Wang Jizhong, Qingdao University of Technology, College of Machinery and Automobile, Qingdao, China
Chen Shuai, Qingdao University of Technology, College of Machinery and Automobile, Qingdao, China
Received: May 11, 2019;       Accepted: Jun. 26, 2019;       Published: Jul. 17, 2019
DOI: 10.11648/j.ajma.20190702.12      View  45      Downloads  14
Abstract
With the rapid development of the automotive industry and the increasing demand of consumers for the quality of automotive products, improving the reliability of automotive products has become the "top priority" of enterprises. While improving the reliability level of engine mounting bracket for commercial vehicles, it can not reduce the mechanical strength performance of the structure. Therefore, it is of practical significance to optimize the structure and study the reliability of the mounting bracket. The engine mounting bracket mainly supports the weight of the engine. According to the design space and process requirements, the topology optimization design is carried out to find the most reasonable material distribution. Structural optimization of mounting bracket can be demonstrated by different schemes in conceptual design stage, and verified by finite element analysis and strength test. Among many complex factors affecting structural reliability, product design is the most fundamental one. The design determines the reliability of engine mounting bracket, and the defects left in the design can not be completely solved in production and use. During the design and development of a commercial vehicle, the engine mounting bracket broke during road test. Through macro-analysis of the fracture site, it is preliminarily determined that the suspension bracket system suffers from rapid fracture due to excessive load under driving conditions, resulting in stress concentration. The finite element model of powertrain mounting bracket is established, the strength of mounting bracket is analyzed, and the structure of engine bracket is improved according to its stress distribution and processing requirements. Comparing the performance of engine mounting bracket before and after improvement, it shows that the strength of engine mounting bracket has been improved obviously, and the weight has been reduced effectively. It provides an important reference for the strength performance design of engine mounting bracket.
Keywords
Engine Mounting Bracket, Finite Element Analysis, Structural Improvement, Strength
To cite this article
Lv Lin, Wang Jizhong, Chen Shuai, Strength Performance Analysis and Improvement of Engine Mounting Bracket for a Commercial Vehicle, American Journal of Mechanics and Applications. Vol. 7, No. 2, 2019, pp. 21-29. doi: 10.11648/j.ajma.20190702.12
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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