Comparisons between 2D and 3D MPFEM Simulations in Modeling Uniaxial High Velocity Compaction Behaviors of Ti-6Al-4V Powder

• Autorzy: Zhou Jian , Xu Hongkun , Zhu Chenyu , Wang Bin , Liu Kun

Identyfikatory

DOI

10.24425/amm.2022.137472

• Języki publikacji: EN

Abstrakty

EN

Multi-particle finite element method (MPFEM) simulation has been proven an efficient approach to study the densification behaviors during powder compaction. However, comprehensive comparisons between 2D and 3D MPFEM models should be made, in order to clarify which dimensional model produces more accurate prediction on the densification behaviors. In this paper, uniaxial high velocity compaction experiments using Ti-6Al-4V powder were performed under different impact energy per unit mass notated as E_m. Both 2D and 3D MPFEM simulations on the powder compaction process were implemented under displacement control mode, in order to distinguish the differences. First, the experimental final green density of the compacts increased from 0.839 to 0.951 when E_m was increased from 73.5 J/g to 171.5 J/g. Then detailed comparisons between two models were made with respect to the typical densification behaviors, such as the density-strain and density-pressure relations. It was revealed that densification of 2D MPFEM model could be relatively easier than 3D model for our case. Finally, validated by the experimental results, 3D MPFEM model generated more realistic predictions than 2D model, in terms of the final green density’s dependence on both the true strain and E_m. The reasons were briefly explained by the discrepancies in both the particles’ degrees of freedom and the initial packing density.

Słowa kluczowe

EN

multi-particle finite element method; Ti-6Al-4V; powder compaction; relative green density; impact energy per unit mass

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2022
• Tom: Vol. 67, iss. 1
• Strony: 57--65
• Opis fizyczny: Bibliogr. 30 poz., fot., rys., tab., wzory

Twórcy

autor

Zhou Jian

• Hefei University of Technology, School of Mechanical Engineering, Hefei, 230009, China

• https://orcid.org/0000-0001-7079-5310

autor

Xu Hongkun

• Hefei University of Technology, School of Mechanical Engineering, Hefei, 230009, China

• https://orcid.org/0000-0002-4637-6682

autor

Zhu Chenyu

• Hefei University of Technology, School of Mechanical Engineering, Hefei, 230009, China

• https://orcid.org/0000-0002-9574-0129

autor

Wang Bin

• Hefei University of Technology, School of Mechanical Engineering, Hefei, 230009, China

• https://orcid.org/0000-0003-1303-4552

autor

Liu Kun

• Hefei University of Technology, School of Mechanical Engineering, Hefei, 230009, China

• https://orcid.org/0000-0002-7502-7510

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Uwagi

1. The authors are grateful for the financial support from National Natural Science Foundation of China (grant numbers 51905141 and 51975174), Natural Science Foundation of Anhui province (grant number 1808085ME118), and the Fundamental Research Funds for the Central Universities, China (grant number JZ2021HGTB0086). The authors thank Ms. Xia Shu for providing help on using the experiment facilities.

2. Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).