Blast behaviors of precast concrete sandwich EPS panels: FEM and theoretical analysis

Ye, Xin; Zhao, Chunfeng; He, Kaicheng; Zhou, Lei; Li, Xiaojie; Wang, Jingfeng

doi:10.1016/j.engstruct.2020.111345

Cited by 17 publications

(6 citation statements)

References 23 publications

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“…Simultaneously, the *CONSTRAINED_LAGRANGE_IN_SOLID keyword is used to simulate the interaction among the reinforcement, concrete, and steel plate. Simultaneously, the keyword of *AUTOMATIC_ CONTACT_ SURFACE _TO_ SURFACE is used to simulate the steel plate and concrete infill core interaction, 11 which has been widely used and validated in several References 18, 32–34.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…In the past, some research primarily concerned the blast resistance of reinforced concrete (RC) slabs 5,12–21 . With the development and application of the SC structures, some papers started to focus on the impact capacity of SC components.…”

Section: Introductionmentioning

confidence: 99%

“…In the past, some research primarily concerned the blast resistance of reinforced concrete (RC) slabs. 5,[12][13][14][15][16][17][18][19][20][21] With the development and application of the SC structures, some papers started to focus on the impact capacity of SC components. Wang et al 10 and Remenikov et al 22 studied the dynamic behaviors of steel-concrete steel (SCS) slabs, axially restrained steel concrete steel (SCS), and lightweight concrete panels under impact loading and heavy hammer impact.…”

mentioning

confidence: 99%

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Blast resistance of single steel‐concrete composite slabs under contact explosion

Zhao

Chen

Jin

et al. 2023

Structural Concrete

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Terrorist attacks or contact explosions could trigger severe damage to structural components or even cause the local or global collapse of the structure in civil engineering and infrastructures. Single‐steel‐concrete (SSC) slabs consist of a concrete core and one steel faceplate combined with shear studs or tie bars that can be applied in resisting explosion or blast load. This paper experimentally and numerically studies the blast performance of the scale SSC specimens under a contact explosion. The damage modes, deflections, and acceleration response of the SSC specimens are obtained and compared by experimental and numerical methods. And then the influences of the explosive, the shear stud length, and the steel plate thickness on the damage modes, acceleration, and displacement response are studied parametrically. It is observed that both of the concrete layers in SSC slabs have crater failure at the impacted surface and steel plates occur local deformation or buckling. No penetrability failure generates in the slabs because of the existence of the steel plate, which can improve the blast resistance and decrease the maximum deflections of the specimens. Finally, an empirical equation is developed to estimate the midspan displacement of the slab using the multivariable regression method (MNRM).

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Section: Finite Element Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Blast resistance of single steel‐concrete composite slabs under contact explosion

Zhao

Chen

Jin

et al. 2023

Structural Concrete

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“…In such cases, the most common and versatile method of analysis is the finite element method. The application of this method can be found, for example, in [ 16 , 17 , 18 , 19 , 20 , 21 ]. However, it should be mentioned that creating and evaluating numerical models of sandwich plates with complicated heterogeneous cores is a time-consuming process, which additionally requires a lot of computing resources.…”

Section: Introductionmentioning

confidence: 99%

Tolerance Modelling of Vibrations of a Sandwich Plate with Honeycomb Core

Marczak

2022

Materials

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Sandwich structures are commonly used in many branches of modern engineering, such as aerospace or naval constructions. In this work, a vibration analysis of such structures is performed with the use of an anlytical model based on a zig-zag hypothesis. Due to the assumed periodic microstructure, which may occure in any layer of the structure, the initial governing equations describing its dynamic behaviour may contain periodic, non-continuous coefficients. The main aim of the presented paper is to show an analytical solution to the issue of the vibration analysis of the mentioned structures. With the use of the tolerance averaging technique, the initial governing equations are transformed to the form with constant coefficients, which is convenient to solve using well-known mathematical methods. The derived model is a versatile solution for any type of periodically inhomogeneous sandwich plate, including sandwich plates with a honeycomb core. Eventually, in the calculation example, the application of the derived averaged model in the analysis of vibrations of such structures is presented and discussed. The convergence of results of the tolerance model and FEM analysis proves the correctness and superiority of the proposed solution.

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“…The current approaches in blast design guidelines (e.g., [21]) widely use the generalized SDOF approximation. The literature also includes more nuanced representations of structural systems based on the beam theory [22], multi-degrees-of-freedom (MDOF), and Finite Element (FE) models [23][24][25][26][27]. The increasing computational capabilities and advances in numerical techniques have also enabled the seamless integration of blast load models, derived from first principles, with high-fidelity computational models of structural dynamics (see [28] for a review.…”

Section: Introductionmentioning

confidence: 99%

Physics-based probabilistic demand model and reliability analysis for reinforced concrete beams under blast loads

Stochino¹,

Tabandeh²,

Gardoni³

et al. 2021

Engineering Structures

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Blast behaviors of precast concrete sandwich EPS panels: FEM and theoretical analysis

Cited by 17 publications

References 23 publications

Blast resistance of single steel‐concrete composite slabs under contact explosion

Blast resistance of single steel‐concrete composite slabs under contact explosion

Tolerance Modelling of Vibrations of a Sandwich Plate with Honeycomb Core

Physics-based probabilistic demand model and reliability analysis for reinforced concrete beams under blast loads

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