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Optimization design of titanium alloy connecting rod based on structural topology optimization

Bin Zheng (School of Intelligent Manufacturing, Panzhihua University, Panzhihua, China and Panzhihua Automobile Engineering Technology Research Institute, Panzhihua, China)
Yi Cai (School of Intelligent Manufacturing, Panzhihua University, Panzhihua, China and Panzhihua Automobile Engineering Technology Research Institute, Panzhihua, China)
Kelun Tang (Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities, Zigong, China)

Journal of Engineering, Design and Technology

ISSN: 1726-0531

Article publication date: 11 August 2021

93

Abstract

Purpose

The purpose of this paper is to realize the lightweight of connecting rod and meet the requirements of low energy consumption and vibration. Based on the structural design of the original connecting rod, the finite element analysis was conducted to reduce the weight and increase the natural frequencies, so as to reduce materials consumption and improve the energy efficiency of internal combustion engine.

Design/methodology/approach

The finite element analysis, structural optimization design and topology optimization of the connecting rod are applied. Efficient hybrid method is deployed: static and modal analysis; and structure re-design of the connecting rod based on topology optimization.

Findings

After the optimization of the connecting rod, the weight is reduced from 1.7907 to 1.4875 kg, with a reduction of 16.93%. The maximum equivalent stress of the optimized connecting rod is 183.97 MPa and that of the original structure is 217.18 MPa, with the reduction of 15.62%. The first, second and third natural frequencies of the optimized connecting rod are increased by 8.89%, 8.85% and 11.09%, respectively. Through the finite element analysis and based on the lightweight, the maximum equivalent stress is reduced and the low-order natural frequency is increased.

Originality/value

This paper presents an optimization method on the connecting rod structure. Based on the statics and modal analysis of the connecting rod and combined with the topology optimization, the size of the connecting rod is improved, and the static and dynamic characteristics of the optimized connecting rod are improved.

Keywords

Acknowledgements

Retraction notice: The publisher of the Journal of Engineering, Design and Technology wishes to retract the following article by Bin Zheng, Yi Cai, and Kelun Tang (2021), “Optimization design of titanium alloy connecting rod based on structural topology optimization”, published in the Journal of Engineering, Design and Technology, Vol. ahead-of-print, No. ahead-of-print, https://doi.org/10.1108/JEDT-01-2021-0045. Concerns were raised regarding the identity of the authors and the originality of the research; the authors were asked to provide details of their collaboration on this article and the data used to create it, but were unable to offer sufficient description of the authorship process or address the queries raised about the data; as a result the findings of the paper cannot be relied upon and the standard of the article does not meet that expected by the journal. The authors would like it to be noted that they are not in agreement with this retraction. The publisher of the journal sincerely apologises to the readers.

This research was supported by Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities (No.2019JXY05) and the Vanadium and Titanium Resources Comprehensive Utilization Key Laboratory of Sichuan Province (No. 2018FTSZ32) and (No. 2019FTSZ08).

Citation

Zheng, B., Cai, Y. and Tang, K. (2021), "Optimization design of titanium alloy connecting rod based on structural topology optimization", Journal of Engineering, Design and Technology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/JEDT-01-2021-0045

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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