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SHEET METAL FORGING PROCESS FOR THIN-WALLED STRUCTURES WITH CROSSED RIBS: PROCESS DESIGN, SIMULATION AND A FORMING EXPERIMENT

1,2 FENG Bin
Co-authors:
1,2 HE Ji 1,2 LI Shuhui 1,2 GU Bin 1,2 LIN Zhongqin
Institutions:
1 State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, China, msv@sjtu.edu.cn
2 Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai, China, bmtc@sjtu.edu.cn
Conference:
30th Anniversary International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 26 - 28, 2021
Proceedings:
Proceedings 30th Anniversary International Conference on Metallurgy and Materials
Pages:
217-222
ISBN:
978-80-87294-99-4
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2021.4112
Published:
15th September 2021
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
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Abstract

A sheet-forging process is proposed to form thin-walled structures with crossed-ribs. To solve the problem of grid distortion in finite element simulations, an element reconfiguration strategy that combines a stress-strain map solution and element reconstruction is applied, and typical samples with crossed-ribs are designed to verify the accuracy of simulation. Through the compression tests, the true stress-strain curves are achieved under different strain rates. By applying the FE method, the flow behavior of the materials is investigated, and the non-linear relationship between reduction amount and rib height is obtained. According to the plastic deformation behaviors, more uniform deformation in the later forming period leads to more material flowing into the rib grooves.

Keywords: Sheet-forging process, crossed-ribs, plastic deformation behavior, element reconfiguration strategy, average grain size

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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