Sandwich plates with gradient lattice cores subjected to air blast loadings

Yang, Lihong; Sui, Lei; Li, Xuyang; Dong, Yalun; Zi, Fan; Wu, Linzhi

doi:10.1080/15376494.2019.1669092

Cited by 26 publications

(3 citation statements)

References 36 publications

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“…Auxetic materials constitute a unique class of substances, distinguished by their remarkable property of lateral expansion when subjected to longitudinal stretching. Owing to these distinctive structural qualities, auxetic materials have found application in various technical fields, such as shock protection, the medical industry, aviation wing design, and even sensor technology (Imbalzano et al, 2017;Lihong et al, 2019;Masoud et al, 2023;A et al, 2022;Budarapu and Natarajan, 2016;J et al, 2023;Frank et al, 2021). Stretchable strain sensors employ mechanical ancillary metamaterials with negative Poisson's ratios because they have a high sensitivity (Taherkhani et al, 2020).…”

Section: Analytical and Numerical Models 21 Auxetic Structurementioning

confidence: 99%

Design and Evaluation of Auxetic Structures as Displacement Sensor

Zhang,

Wen,

et al. 2023

Smart Manufacturing and Material Processing (SMMP)

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In the field of engineering measurement, the displacement sensor is a widely used tool. In this study, a novel method has been developed for measuring displacement. The newly introduced approach aims to address the demand for improved sensitivity, accuracy, and efficiency in displacement measurements, thereby contributing to advancements in various engineering applications and providing valuable insights for future sensor development. The proposed method involves the conversion of stress deformation-induced position changes in auxetic structures into output current changes, providing acceptable measurement accuracy and reliable means of measuring displacement. To evaluate the efficacy of proposed method, three different structures are utilized for analysis and experimental testing in this study, and their performance is comparatively evaluated. The discoveries in this study will present fresh possibilities for employing auxetic materials in the domain of measurement. 3D printing technology is employed for the fabrication of the auxetic structures, rather than conventional subtractive manufacturing methods. 3D printing technology has completely revolutionized various industries, and in the field of measurement, its potential remains largely untapped. By exploring innovative applications, we can expand its utility, simplify the complexity associated with sensor manufacturing, and achieve significant cost reductions. This article delves into the exciting possibilities that 3D printing brings to measurement and sensor production, paving the way for groundbreaking advancements.

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Section: Analytical and Numerical Models 21 Auxetic Structurementioning

confidence: 99%

Design and Evaluation of Auxetic Structures as Displacement Sensor

Zhang,

Wen,

et al. 2023

Smart Manufacturing and Material Processing (SMMP)

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“…Sandwich panels are made of front (facing blast load) and back (facing mating structure) face sheets and a core material [3] (figure 1). Sandwich panels with crushable cores are good candidates for blast-loading applications due to their high energy absorption characteristics, low weight and high strength-to-weight ratios [4]. Moreover, the core between the front and back face sheets can dissipate a very large amount of energy in a blast scenario and weakens the transmitted shockwave to back face sheets and therefore protects the applications from failure [5].…”

Section: Introductionmentioning

confidence: 99%

The effect of geometrical parameters on blast resistance of sandwich panels—a review

Gülcan¹,

Günaydın²,

Tamer

2023

Funct. Compos. Struct.

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Many engineering structures, especially the defense applications, need to be reinforced against blast loads due to a nearby explosion. Today, much more attention needs to be given to this issue because of increased exposure to explosions, and natural disasters. Different solutions have been used in the literature to mitigate blast loading effects. One of these applications, sandwich panels, are good candidates for blast loading applications. In a sandwich panel structure, several parameters have considerable effects on the deflections, deformations, and the energy absorption capability. The most important of these parameters are: i) the material and thickness of the front and back face sheets and core; ii) core density and grading; iii) core and face sheet types; iv) filling and stiffening strategies of the core; v) radius of curvature of the panel; vi) mass of explosive charge; and vii) standoff distance. The aim of this paper is to review these critical aspects of blast loading of sandwich panels to provide an overall insight into the state of the art of the application.

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“…Cellular structures also aim to achieve Type I behaviour in order to protect structures from blast overpressures as well as to dissipate energy through plastic deformation and crushing. Structures such as honeycombs (Jin et al, 2016; Qi et al, 2017; Sun et al, 2019), folded cores (Li et al, 2018; Pydah and Batra, 2018; Schenk et al, 2014), and lattice structures (Feng et al, 2019; Smith et al, 2010; Yang et al, 2019) have all been proposed as energy-dissipating systems for blast mitigation. Even cellular structures made from empty beverage cans (Ousji et al, 2020; Palanivelu et al, 2011) have been shown to be effective at attenuating blast overpressures.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of blast effects through novel energy-dissipating connectors

Seica

Packer

Walker

et al. 2022

International Journal of Protective Structures

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Explosions generate overpressures that can cause irreparable damage to structures. For many buildings, especially critical infrastructure, continued operation after an explosive attack is essential. The use of energy-dissipating methods will enable the protection of a structure and occupants from a blast and permit the timely repair and re-occupation of the building after an event. The concept behind the system presented is the creation of panels that can be used as cladding for structures. The panels are connected to the main structure using energy-dissipating component assemblies around the panel edge. When subjected to a blast load the panels transfer the blast pressure through the assemblies, thereby reducing the forces transmitted to the underlying structure. After an event, the panels and energy-dissipating component assemblies can be replaced quickly and easily, allowing the building to be reoccupied in a short time after an attack. This study focuses on the characterization of energy-dissipating component assemblies using static and dynamic laboratory testing. A predictive theory, supported by a single degree of freedom model, is developed and a general evaluation method proposed. Further laboratory testing expands the characterization of behaviour of the assemblies through experiments, with a blast generator in tension tests and in simulated blast panel tests. The time histories developed from tension tests are then compared to examine the effect of loading rate. The investigations on blast panels also include a comparison with predictions to determine whether the latter can describe the global behaviour of the system. Lastly, the response of the energy-dissipating component assemblies is evaluated in full-scale field blast tests on cladding panels.

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Sandwich plates with gradient lattice cores subjected to air blast loadings

Cited by 26 publications

References 36 publications

Design and Evaluation of Auxetic Structures as Displacement Sensor

Design and Evaluation of Auxetic Structures as Displacement Sensor

The effect of geometrical parameters on blast resistance of sandwich panels—a review

Mitigation of blast effects through novel energy-dissipating connectors

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