Ballistic Performance of Nanostructured Metals Toughened by Elliptical Coarse-Grained Inclusions: A Finite Element Study with Failure Analysis

Guo, Xiang; Ouyang, Q.D.; Sun, Yubo; Weng, George J.

doi:10.3390/ma11060977

Cited by 2 publications

(2 citation statements)

References 49 publications

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“…There are numerous materials which ensure bullet proof properties: bimodal nanostructured metals [5], polymer-matrix composites (high-density polyethylene and polypropylene reinforced with aramid fabric) [6], para-aramid 3D angle-interlock fabrics [7] etc. One of the innovative solutions is to use bio composite armors made of high-density polyethylene (HDPE) reinforced with chonta palm wood micro-particles [8] or lightweight ballistic materials which are relatively new [9], or to use cross-laminated timber (CLT) [10,11] as ballistic construction material.…”

Section: Introductionmentioning

confidence: 99%

Solution of Bullet Proof Wooden Frame Construction Panel with a Built-In Air Duct

et al. 2021

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The growing terrorism threats across the world play an important role in the design of civil buildings and living areas. The safety of personnel is a top priority in unclassified buildings, especially military buildings. However indoor air quality and thermal comfort has a direct impact on personal productivity and ability to concentrate on duties and affect the decision making in stress conditions. The use of wooden structures is becoming more common in the building construction, and application of wooden frame structures for the construction of new buildings as well as for retrofitting the existing buildings. Prefabricated wooded frame construction perfectly fits need of unclassified buildings, allowing significant reduction of construction time and integration of various active and passive elements, such as a fresh air supply duct. Within the scope of this paper a 12 mm thick ballistic panel made of aramid was tested. Ballistic panel, thermal conductivity, and fire resistance of wooded construction panel with embedded air duct were analyzed for the various modelled exterior wall solutions. The main advantage of the proposed technology is fast and qualitative modular construction of unclassified buildings, providing all modern requirements not only for safety, but also for the energy efficiency and indoor air quality. It was found that bullet proof aramid panels do not reduce overall fire safety in comparison to traditional construction materials. However embedded outdoor air supply ducts significantly reduces construction heat transfer coefficient.

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Section: Introductionmentioning

confidence: 99%

Solution of Bullet Proof Wooden Frame Construction Panel with a Built-In Air Duct

et al. 2021

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“…Using the 2D extended finite element method, Hosseini-Toudeshky and Jamalian [29] and Yadollahpour and Hosseini-Toudeshky [30] uncovered that the CG inclusions could impede the cracks propagation in the matrix and thus enhance the ductility of bimodal NS Al and Al-Mg alloy, respectively. In our previous articles, [31][32][33] the element-deletion method has been used to simulate the fracture behavior of bimodal NS Cu, which strives to clarify the roles of the shape and distribution of CG inclusions. Nonetheless, interface effects have not yet been involved in these studies.…”

Section: Introductionmentioning

confidence: 99%

Microstructure‐Property Relations in the Tensile Behavior of Bimodal Nanostructured Metals

et al. 2020

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Bimodal nanostructured (NS) metals realize the superior strength due to the strengthening of nanograined (NG) matrix, whereas their high ductility arises from the toughening of coarse‐grained (CG) inclusions. Their overall strength and ductility can be influenced by 1) the fracture properties of CG and NG phases, 2) the distribution of CG inclusions, and 3) interfaces. Herein, a 3D cohesive finite element framework is built up and three classes of cohesive elements are developed: 1) cohesive elements embedded into the CG phase, 2) those embedded at the CG–NG interfaces, and 3) those embedded into the NG phase, to examine the tensile fracture of the bimodal NS Cu. The results indicate that the cohesive strength of NG phase is decisive to the overall performances and it also affects the roles of both the cohesive strength of CG phase and the distribution of CG inclusions. When the CG inclusions are array‐arranged in the interior of the entire microstructure, the best overall strength and ductility can be obtained. In addition to these, both the strength and ductility of the bimodal NS Cu get stabilized when the cohesive strength and the fracture energy of interfaces are larger than those of CG phase.

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Ballistic Performance of Nanostructured Metals Toughened by Elliptical Coarse-Grained Inclusions: A Finite Element Study with Failure Analysis

Cited by 2 publications

References 49 publications

Solution of Bullet Proof Wooden Frame Construction Panel with a Built-In Air Duct

Solution of Bullet Proof Wooden Frame Construction Panel with a Built-In Air Duct

Microstructure‐Property Relations in the Tensile Behavior of Bimodal Nanostructured Metals

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