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Applied Mechanics in Metallic Material Engineering

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Metals and Alloys".

Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 1162

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School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: high-entropy alloys
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Special Issue Information

Dear Colleagues,

In modern engineering practice, a wide range of metals and high-performance materials are extensively employed. These materials play a critical role in various fields such as aerospace, the automotive industry, and maritime engineering, driving continuous technological advancements.

The performance and applications of different materials are closely intertwined, making in-depth research into material properties, processing methods, and deformation mechanisms crucial to meet the demands of modern engineering practice. This includes the emergence of new materials, such as high-entropy alloys and nanomaterials. It encompasses various scales, from the microscopic to the macroscopic, involving aspects like micro-deformation mechanisms, lattice slip, dislocation movement, and phase transformations.

The primary objective of this Special Issue is to enhance our understanding of the mechanical properties, processing techniques, and deformation mechanisms of diverse materials. We encourage researchers to share their findings, fostering collaboration and knowledge exchange across different material domains, ultimately driving the advancement of modern engineering practice.

Dr. Dongyue Li
Guest Editor

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Keywords

  • high-entropy alloys
  • mechanical properties
  • low-temperature performance
  • processing and forming
  • wire drawing
  • deformation mechanisms
  • strengthening mechanisms
  • nanocrystals
  • size effects

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Published Papers (1 paper)

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Research

33 pages, 15913 KiB  
Article
Axial Crushing Theory and Optimization of Lattice-Filled Multicellular Square Tubes
by Xiwu Zhou, Jingdong Liu, Weifeng Rong and Benying Wu
Materials 2024, 17(6), 1245; https://doi.org/10.3390/ma17061245 - 8 Mar 2024
Cited by 1 | Viewed by 943
Abstract
A lattice-filled multicellular square tube features a regular cross-sectional shape, good energy consumption, and good crashworthiness, which is suitable for the design of energy absorbers in various protection fields such as automobiles, aerospace, bridges, etc. Based on the super folding theory, two reference [...] Read more.
A lattice-filled multicellular square tube features a regular cross-sectional shape, good energy consumption, and good crashworthiness, which is suitable for the design of energy absorbers in various protection fields such as automobiles, aerospace, bridges, etc. Based on the super folding theory, two reference planes are set to refine the energy consumption zone of the super folding element in this study. The energy consumption calculation of convex panel stretching is involved, and the critical crushing force formula is introduced in this study. Meanwhile, the calculation method from a single-cell square tube to a multicellular thin-walled square tube is extended and the structural optimization is investigated, in which the NSGAII algorithm is used to obtain the Pareto front (PF) of the crashworthiness performance index of the square multicellular tubes, the Normal Boundary Intersection (NBI) method is adopted to select knee points, and the influence of different cross-sectional widths on the number, as well as the thickness, of cells are discussed. This study’s results indicate that the theoretical value is consistent with that obtained from the numerical simulation, meaning that the improved theoretical model can be applied to predict the crashworthiness of multicellular square cross-sectional tubes. Also, the optimization method and study results proposed in this study can provide a reference for the design of square lattice multicellular tubes. Full article
(This article belongs to the Special Issue Applied Mechanics in Metallic Material Engineering)
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