Investigation of Honeycomb Sandwich Panel Structure using Aluminum Alloy (AL6XN) Material under Blast Loading

Ansori, Dany Taufiq Alim; Prabowo, Aditya Rio; Muttaqie, Teguh; Muhayat, Nurul; Laksono, Fajar Budi; Tjahjana, D. D. Dwi Pria; Prasetyo, Ari; Kuswardi, Yemi

doi:10.28991/cej-2022-08-05-014

Cited by 17 publications

(3 citation statements)

References 33 publications

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“…Te efect of several modeling parameters was studied such as mesh sensitivity analysis, and the inclusion of air medium and erosion values on the displacements and damage pattern. Ansori et al [13] numerically investigated the geometrical efects of the sandwich panel on intact and damaged models. Te results showed that the hexagonal core was more resistant to blast loads than the square design.…”

Section: Introductionmentioning

confidence: 99%

Detonation Wave Propagation of Double-Layer Shaped Charge and Its Driving Characteristics to the Liner

Chen

2023

Shock and Vibration

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The double-layer charge can effectively improve the axial driving ability of explosives, which shows a considerable engineering application prospect in highly efficient damage warheads. Due to the complex wave structure produced by the overpressure detonation of a double-layer charge, a series of dynamic behaviors inside the shaped charge liner will be affected. By comparing the detonation wave shapes of single-layer charge and double-layer shaped charge structure and the jet shaping parameters of a double-layer shaped charge with different structural parameters, the evolution of detonation wave and the state parameters in the wave system are analyzed in this research. The research found that the double-layer charge with high detonation velocity in the outer layer and low detonation velocity in the inner layer can produce continuous overpressure detonation, which makes the overpressure detonation state be applied efficiently. Meanwhile, this study found that the overpressure detonation field formed by the double-layer charge changes the action law of the traditional single charge on the shaped charge liner. The detonation waveform of the entire charge is controlled by different detonation velocities and detonation energies, and a detonation waveform that matched well with the shaped charge liner is obtained. This study solves the matching relationship between the structure of the overpressure detonation wave system and the properties of a double-layer charge, which is of great value for improving the detonation-driving effect of condensed explosives on surrounding media. The double-layer charge can effectively enhance the potential of explosive charge. It is not only widely used in military fields such as improving the armor-breaking power of shaped charge penetrators and improving the muzzle velocity and concentration of fragments of directional warheads, but also can promote the development of industrial fields such as explosive processing.

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Section: Introductionmentioning

confidence: 99%

Detonation Wave Propagation of Double-Layer Shaped Charge and Its Driving Characteristics to the Liner

Chen

2023

Shock and Vibration

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“…This catastrophe is represented by numerous causes such as fire/explosion, collision, grounding, hull damage, and machinery damage/failure resulting in such damage as tearing, plastic deformation, folding, and torsion. Research to improve the safety of transportation [3], especially ships, has been critical in recent years [4][5][6][7]. The methods introduced by researchers for analyzing the structural damage in a ship can be classified into four categories: empirical methods [8], finite element methods [9][10][11][12], experimental methods, and simplified analytical methods.…”

Section: Introductionmentioning

confidence: 99%

Forecasting the Effects of Failure Criteria in Assessing Ship Structural Damage Modes

et al. 2022

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The failure to achieve satisfactory results will cause immense losses in major projects. Nevertheless, the modeling limitations and phenomenon assumptions represented by failure criteria can significantly influence the final results—e.g., the damage mode, affecting its quantification—thus representing an interesting topic for technical assessment. This work aims to forecast the effects of several failure criteria on the damage occurring due to structural loading schemes, such as compression, torsion, and tensile tests. Failure criteria are taken based on the proposal of pioneer researchers and include those of Peschmann (P), Germanischer Lloyd (GL), Liu (LIU), and Rice–Tracey and Cockroft–Latham (RTCL). A series of nonlinear finite element analyses (NLFEA) are conducted by inputting these criteria into different loading schemes. To obtain reliable validation, the proposed models are designed based on previous laboratory experiments. The numerical results of NLFEA in the forms of damage mode, i.e., tearing, plastic deformation, and torsion, are cross-checked with experimental data. The results show that numerical modeling using the LIU criterion produces slightly larger discrepancies compared with experimental data. This indication is founded on the analysis of stress–strain, load–displacement, and shear stress–strain during the tensile test, compressive load, and torsion load, respectively. According to this work, we formulate recommendations based on the forecast tendency and accuracy for each damage mode subjected to failure criteria. Therefore, future works can adopt the findings in our current work when choosing to apply specific criteria in structural modeling and load idealization. Doi: 10.28991/CEJ-2022-08-10-03 Full Text: PDF

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“…Research on the response of the geometric structure of a plate to impact and various active loads [5][6][7][8][9][10][11][12][13], including air blast loading, has been carried out over the past few decades. Explosive loading due to landmines and improvised explosive devices (IEDs) poses a signi cant threat to military vehicles and civilian infrastructure.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Structural Assessment of Blast Wall Designs on Military-Based Vehicle Using Explicit Finite Element Approach

Mubarok

Prabowo

Muttaqie³

et al. 2022

Mathematical Problems in Engineering

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Explosion load studies are an essential part of shield engineering design. This is especially true for explosion-proof plates, which are used in order to reduce the impact of explosions, which have the potential to cause substantial damage to structural elements. The purpose of this study is to detail the explosion phenomenon and the response of sandwich panel structures under explosive loading. The finite element method (FEM) is used to model the dynamic structural response to explosions. Explicit finite element modeling and analysis are performed using ABAQUS CAE software. An air explosion simulation code is used to determine the blast load on the lower skin plate of a test panel on a typical armored personnel vehicle. Structural analysis is carried out with respect to displacement, von-Mises stress, and internal kinetic energy. Three variations of explosive loads are considered in the simulation in order to better compare the responses of the structures. Three different design variants and materials are considered, including honeycomb, stiffener, and corrugated geometric models and mild steel, medium carbon steel, and alloy steel materials. The results provided by this study pave the way toward the development of guidelines for the design of lightweight structural reinforcement elements.

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Investigation of Honeycomb Sandwich Panel Structure using Aluminum Alloy (AL6XN) Material under Blast Loading

Cited by 17 publications

References 33 publications

Detonation Wave Propagation of Double-Layer Shaped Charge and Its Driving Characteristics to the Liner

Detonation Wave Propagation of Double-Layer Shaped Charge and Its Driving Characteristics to the Liner

Forecasting the Effects of Failure Criteria in Assessing Ship Structural Damage Modes

Dynamic Structural Assessment of Blast Wall Designs on Military-Based Vehicle Using Explicit Finite Element Approach

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