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Article type: Research Article
Authors: Yu, Chunleia; * | Bao, Yingchaoa | Chen, Chaob
Affiliations: [a] School of Mechanical and Electrical Engineering, Zaozhuang University, Zaozhuang, Shandong, China | [b] JIER Machine-Tool Group Co., Ltd, Jinan, Shandong, China
Correspondence: [*] Corresponding author: Chunlei Yu, School of Mechanical and Electrical Engineering, Zaozhuang University, Zaozhuang, Shandong 277160, China. E-mail: yclfinder@163.com.
Abstract: A finite element model (FEM) of the bracket arm of wrecker is developed and the mechanical behavior under six representative conditions is studied in this paper. Stress test experiment is carried out to validate the presented FEM. Comparison analyses show that results predicted from the FEM are in good agreement with those obtained from the test experiment. Moreover, the mechanical behavior analyses also give the danger working conditions for each component of the bracket arm. Based on the stress distributions under the danger working condition, structural improvement is conducted for the component which is prone to material failure. Mechanical behavior analyses of the improved structures are also carried out in this paper. Numerical analysis results show that the maximum stresses of each improved component of the bracket arm are all reduced to close or below the allowable stress. This indicted that the load bearing capacities of each component are improved effectively and meet the requirements of engineering applications.
Keywords: Bracket arm of wrecker, mechanical behavior, finite element analysis, stress test experiment, structural improvement
DOI: 10.3233/JCM-214906
Journal: Journal of Computational Methods in Sciences and Engineering, vol. 21, no. 5, pp. 1263-1276, 2021
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