Original scientific paper

https://doi.org/10.21278/TOF.472051222

Study on Multi-step Forming Paths for Double Curved Parts of 1561 Aluminium Alloy

Zhongfeng Zhang ; Dieless Forming Technology Center, Jilin University, Changchun, China
Qingwen Xue ; Cssc HuangPuWenchong Shipbuilding Company Limited, Guangzhou, China
Lixia Wen ; Cssc HuangPuWenchong Shipbuilding Company Limited, Guangzhou, China
Weihua Peng ; Cssc HuangPuWenchong Shipbuilding Company Limited, Guangzhou, China
Han Shao ; Dieless Forming Technology Center, Jilin University, Changchun, China
Wenzhi Fu ; Dieless Forming Technology Center, Jilin University, Changchun, China

Abstract

Recently, corrosion-resistant 1561 aluminium alloy has been widely applied to the production of curved parts. However, the sheets of this material will generate a high amount of springback during multi-point forming, which means that a large amount of springback compensation is required. In this paper, four multi-step forming paths are designed to study the effect of forming paths on the multi-point forming results of double curved parts for 1561 aluminium alloy. Numerical simulation of the multi-step forming of curved sheets is carried out by ABAQUS finite element simulation software. The simulation results indicate that the 1561 aluminium alloy double curved parts produce poor situations such as wrinkling and low forming accuracy in single-step forming, while the accuracy improves significantly and the forming quality increases after four-step forming. Therefore, a four-step forming path was adopted for stamping tests on double curved parts. The results of the accuracy inspection of the formed parts by Gom-inspect demonstrate that the quality of the curved parts can be effectively improved by four-step forming, which has a certain significance in guiding the forming preparation of parts for engineering applications.

Keywords

1561 aluminium alloy; multi-step forming; multi-step forming; springback compensation; numerical simulation

Hrčak ID:

304046

URI

https://hrcak.srce.hr/304046

Publication date:

3.7.2023.

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