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Impact Dynamic Response of Materials and Structures
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Impact Dynamic Response of Materials and Structures

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

Deadline for manuscript submissions: 20 October 2024 | Viewed by 1257

Special Issue Editors

Dr. Ye Yuan

E-Mail Website
Guest Editor
Department of Mechanics, College of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: blast and impact loading of structures; additive manufactured cellular solids; bio-inspired materials and structures; theory of large deformation of composites
Dr. Bin Jia

E-Mail Website
Guest Editor
Department of Mechanics, College of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: ballistic impact behavior of structures; gradient nanostructured materials; explosive welding
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Lightweight materials and structures are finding increasing applications as load-bearing components in aerospace, automotive or defense industries. The advent of various manufacturing techniques (e.g., explosion-welding, 3D printing, etc.) makes the fabrication of innovative materials and structures possible (e.g., bio-inspired structures, functionally graded materials, lattices, etc). Besides operation conditions, the structural members can be subjected to extreme loading conditions (e.g., blast, impact, high-speed fragments, and/or a combination of the above) which could compromise the structural integrity leading to a catastrophic failure event. Recently, the impact dynamic response of advanced materials and structures has received much attention.

This SI aims to derive a thorough understanding of the dynamic response of innovative materials and structures subjected to intensive dynamic loading conditions, including blast, impact and high-speed projectile loadings. The innovative lightweight materials and structures include, but are not limited to, composites, additively manufactured cellular solids and FGMs. Research topics such as experimental characterization of strain-rate dependent mechanical properties, multi-scale numerical modeling and analytical models that allow quick and accurate predictions are welcomed.

This SI is expected to provide valuable guidance on the design of innovative materials and structures under dynamic loadings.

Dr. Ye Yuan
Dr. Bin Jia
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • lightweight materials and structures
  • bio-inspired structures
  • 3D printed structures
  • composites and metallic structures
  • blast, impact and high-speed projectile loading
  • analytical and multiscale numerical modeling
  • experimental characterizations
  • high-strain rate material properties
  • fracture, large deformation and energy absorption

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Published Papers (2 papers)

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17 pages, 5856 KiB  
Article
Atomistic Insights into Impact-Induced Energy Release and Deformation of Core–Shell-Structured Ni/Al Nanoparticle in an Oxygen Environment
by Kexin Zhu, Yifan Xie, Jian-Li Shao and Pengwan Chen
Materials 2024, 17(16), 4034; https://doi.org/10.3390/ma17164034 - 14 Aug 2024
Viewed by 526
Abstract
In actual atmospheric environments, Ni/Al composites subjected to high-velocity impact will undergo both intermetallic reaction and oxidative combustion simultaneously, and the coupling of mechanical and multiple chemical processes leads to extremely complex characteristics of energy release. This work employs ReaxFF molecular dynamics simulations [...] Read more.
In actual atmospheric environments, Ni/Al composites subjected to high-velocity impact will undergo both intermetallic reaction and oxidative combustion simultaneously, and the coupling of mechanical and multiple chemical processes leads to extremely complex characteristics of energy release. This work employs ReaxFF molecular dynamics simulations to investigate the impact-induced deformation and energy release of a core–shell-structured Ni/Al nanoparticle in an oxygen environment. It was found that Al directly undergoes fragmentation, while Ni experiences plastic deformation, melting, and fragmentation in sequence as the impact velocity increased. This results in the final morphology of the nanoparticles being an ellipsoidal-clad nanoparticle, spherical Ni/Al melt, and debris cloud. Furthermore, these deformation characteristics are strongly related to the material property of the shell, manifested as Ni shell–Al core particle, being more prone to breakage. Interestingly, the dissociation phenomenon of Ni–Al–O clusters during deformation is observed, which is driven by Ni dissociation and Al oxidation. In addition, the energy release is strongly related to the deformation behavior. When the nanoparticle is not completely broken (Ni undergoes plastic deformation and melting), the energy release comes from the oxidative combustion of Al fragments and the intermetallic reaction driven by atomic mixing. When the nanoparticle is completely broken, the energy release mainly comes from the oxidative combustion of the debris cloud. At the same time, the promoting effect of oxygen concentration on the energy release efficiency is examined. These findings can provide atomic insights into the regulation of impact-induced energy release for reactive intermetallic materials. Full article
(This article belongs to the Special Issue Impact Dynamic Response of Materials and Structures)
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19 pages, 11490 KiB  
Article
Pulse Design of Constant Strain Rate Loading in SHPB Based on Pulse Shaping Technique
by Shengpeng Chen, Runqiang Chi, Wuxiong Cao, Baojun Pang, Zhenlong Chao, Longtao Jiang, Tian Luo and Runwei Zhang
Materials 2024, 17(12), 2931; https://doi.org/10.3390/ma17122931 - 14 Jun 2024
Cited by 1 | Viewed by 489
Abstract
The Split Hopkinson pressure bar (SHPB) is widely used for characterizing the mechanical behavior of materials at high strain rates. One of the most challenging factors is achieving constant strain rate (CSR) loading of the specimen at a certain strain rate. Obtaining the [...] Read more.
The Split Hopkinson pressure bar (SHPB) is widely used for characterizing the mechanical behavior of materials at high strain rates. One of the most challenging factors is achieving constant strain rate (CSR) loading of the specimen at a certain strain rate. Obtaining the effective incident pulse based on the experimental material for achieving CSR loading remains unresolved. This research focuses on obtaining the proper incident pulse for achieving constant strain rate loading using the pulse-shaping technique. A parameterized objective incident model in terms of the strain rate and quasi-static (or dynamic stress–strain) behavior of the material is established utilizing the three-wave method. Experimental pulses that closely resemble the desired objective pulses can be generated by adjusting parameters such as the geometry of the shaper, the shaper material, striker velocities, and the length of the striker according to the pulse-shaping model. The model is applied to the design of the incident pulse for B4CP/2024Al composite material, and the dynamic stress–strain curves at different strain rates are obtained under CSRs. This model provides effective guidance for selecting an appropriate shaper and achieving CSR loading in SHPB tests. Full article
(This article belongs to the Special Issue Impact Dynamic Response of Materials and Structures)
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