Dynamic response of foam-filled X-type sandwich beam under low-velocity impact

Article Materials Science, Multidisciplinary

Analytical study of the impact response of shear deformable sandwich cylindrical shell with a functionally graded porous core

Yunfei Liu et al.

Summary: The impact response of shear deformable sandwich cylindrical shells with a functionally graded porous core is influenced by factors such as core thickness, impact velocity, foam type, foam coefficient, and masses of impactor and shell.

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES (2022)

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Article Engineering, Civil

Paper tube-guided blast response of sandwich panels with auxetic re-entrant and regular hexagonal honeycomb cores - An experimental study

Ganchao Chen et al.

Summary: This paper investigates the dynamic behavior and failure modes of metallic sandwich panels with different auxetic and non-auxetic cores under blast tests. The study reveals the effects of blast impulse and core density on the panel blast resistance and failure mechanisms. The research provides valuable references for the design of auxetic honeycomb sandwich core in protection applications.

ENGINEERING STRUCTURES (2022)

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Article Engineering, Civil

Optimization of steel web core sandwich panel with genetic algorithm

Pier Giovanni Benzo et al.

Summary: This paper presents the preliminary design of a floor system based on steel web core sandwich panels with polyurethane foam core using a new genetic algorithm procedure to optimize its mass. The study also addresses the minimization of cost and environmental impact and includes practical engineering requirements. The results are presented in terms of design variables and constraints search histories as well as optimal feasible and unfeasible solutions.

ENGINEERING STRUCTURES (2022)

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Article Engineering, Mechanical

Dynamic response of single curved fiber-metal hybrid lamina composites subject to low-velocity impact

Hao Xin et al.

Summary: This study examines the dynamic response of fiber-metal hybrid lamina composites (FM-HLCs) under low-velocity impact through experimental tests. The influence of weave pattern, impact velocity, and radius of curvature on the FM-HLCs' behavior is analyzed. The results show that the fiber-metal hybrid lamina strategy can maintain the integrity of FM-HLCs outside the impact region and increasing fiber content enhances their impact resistance.

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING (2022)

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Article Engineering, Mechanical

Vibration response of glass fiber composite multi-layer graded corrugated sandwich panels

Jin-Shui Yang et al.

Summary: This study investigates the vibration behavior of glass fiber composite multi-layer graded corrugated sandwich panels (MLGCSPs), revealing the significant influences of arrangement modes, graded arrangement, and topologies of the corrugated cores on frequency responses and vibration reduction. The research demonstrates that optimizing the arrangement mode and gradient configuration can simultaneously achieve higher fundamental frequency and lower amplitude of the structures.

JOURNAL OF SANDWICH STRUCTURES & MATERIALS (2022)

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Article Mechanics

Dynamic Crushing Behaviors of Multi-Layered Gradient Honeycombs with Different Poisson's Ratios: A Finite Element Simulation

Xin-Chun Zhang et al.

Summary: A new multi-layered gradient honeycomb (MGH) design was proposed in this work to improve the in-plane dynamic properties and control energy absorption capacities by filling the structure layer with different Poisson's ratio configurations. Explicit dynamic finite element simulation was used to investigate the dynamic behaviors and energy-absorbing characteristics of the MGHs under in-plane impact loadings. The effects of multi-layered gradient arrangements and impact velocities on the dynamic Poisson's ratios, dynamic plateau stresses, crushing load uniformities, and specific energy absorption of the MGHs were studied.

INTERNATIONAL JOURNAL OF APPLIED MECHANICS (2022)

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Article Engineering, Multidisciplinary

A bio-inspired foam-filled multi-cell structural configuration for energy absorption

Ruyang Yao et al.

Summary: This study proposes a novel energy absorber by mimicking the structural characteristics of animal long bone, and investigates its performance and deformation mechanism through experiments and numerical simulations. A theoretical model is also developed to predict its performance.

COMPOSITES PART B-ENGINEERING (2022)

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Article Computer Science, Interdisciplinary Applications

Inverse differential quadrature method for structural analysis of composite plates

Hasan M. Khalid et al.

Summary: A novel two-dimensional inverse differential quadrature method is proposed to approximate the solution of high-order system of differential equations. The method improves the accuracy of the approximation by avoiding the high sensitivity of high-order numerical differentiation operations to noise. The study also presents a general framework for approximating arbitrary functions from high-order partial derivatives and analyzes the bending and buckling behaviors of laminated plates within the context of first-order shear deformation theory.

COMPUTERS & STRUCTURES (2022)

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Article Mechanics

Optimal design of vibro-impact resistant fiber reinforced composite plates with polyurea coating

Hui Li et al.

Summary: This study focuses on the optimal design of vibro-impact resistant fiber reinforced composite plates with polyurea coating, utilizing a theoretical model and experimental validation. By considering dynamic stiffness and impact damage area as key factors, an optimization analysis based on the Non-dominated Sorting Genetic Algorithm is conducted to achieve desired vibration and impact resistant capabilities while maintaining lightweight property, with design variables related to Pareto-optimal solutions.

COMPOSITE STRUCTURES (2022)

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Article Materials Science, Composites

Radar-stealth and load-bearing corrugated sandwich structures with superior environmental adaptability

Zhong Zhang et al.

Summary: The engineering design of lightweight multifunctional composite structures is an attractive research subject with enormous potential in the aerospace and marine fields. This study proposes a novel sinusoidal corrugated sandwich structure with impedance-type frequency selective surface (FSS) to provide superior load-bearing capacity and broadband microwave stealth performance.

COMPOSITES SCIENCE AND TECHNOLOGY (2022)

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Article Engineering, Civil

Out-of-plane crushing behavior of hybrid hierarchical square honeycombs

Zhonggang Wang et al.

Summary: A hybrid hierarchical square honeycomb structure was developed and studied for its crushing performance through experimental, numerical and theoretical analysis. The results showed superior crushing performance compared to regular and edge-based hierarchical honeycombs, providing guidance for the design of hierarchical honeycombs.

THIN-WALLED STRUCTURES (2022)

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Article Engineering, Mechanical

Plastic behaviour of foam-filled X-shaped core sandwich beam

Jianxun Zhang et al.

Summary: The plastic behavior of fully clamped foam-filled X-shaped core sandwich beams is investigated in this study. A yield criterion for foam-filled X-shaped core sandwich structure is proposed, taking into account the strength of the core and foam. An analytical solution is derived for foam-filled X-shaped core sandwich beams loaded laterally under a punch, considering the interaction between traction and bending moment caused by large deflection. Numerical results obtained using Abaqus/Standard software are in good agreement with the analytical analysis. The influences of geometrical parameters and foam strength on the load-bearing capability and absorbed deformation energy capability of the foam-filled X-shaped core sandwich beam are discussed. The analysis approach in this study can be used to predict the plastic behavior of foam-filled X-shaped core sandwich beams.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING (2022)

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Article Physics, Multidisciplinary

A novel hybrid design method of lattice structure based on failure mode

Chuanlei Li et al.

Summary: This paper presents a new design method for hybrid multi-layer lattice structures in order to improve their mechanical properties and energy absorption capabilities. Experimental results indicate that diagonal unit cells have a significant impact on the mechanical properties of the structures.

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY (2022)

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Article Mechanics

Dynamic Crushing Behaviors of Second-Order Hexagonal Honeycombs

Hexiang Wu et al.

Summary: In this study, a second-order hexagonal honeycomb is established by cutting pores on the cell wall to realize secondary lightweight design based on the hexagonal honeycomb model. The in-plane and out-of-plane dynamic crushing behaviors of the second-order hexagonal honeycombs are investigated, and the effect of the variation in the pore sizes on the cell wall is discussed.

INTERNATIONAL JOURNAL OF APPLIED MECHANICS (2022)

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Article Chemistry, Physical

Three-Point Bending Behavior of Aluminum Foam Sandwich with Different Interface Bonding Methods

Peng Huang et al.

Summary: The interface bonding method has a significant impact on the mechanical properties of aluminum foam sandwich (AFS). The metallurgical-bonding method shows higher strength and energy absorption compared to adhesive bonding method.

MATERIALS (2022)

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Article Materials Science, Multidisciplinary

The variation mechanism of core pressure and its influence on the surface quality of honeycomb sandwich composite with thin facesheets

Yansheng Fan et al.

Summary: This study successfully monitored core pressure of honeycomb sandwich composites during hot-pressing process using a self-designed pressure sensing system. The results showed that under sealed conditions, core pressure was significantly higher and maintained throughout the manufacturing process, leading to minimized surface defects.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2021)

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Article Engineering, Mechanical

Nonlinear forced vibrations of FGM sandwich cylindrical shells with porosities on an elastic substrate

Yunfei Liu et al.

Summary: The study investigates the nonlinear forced vibrations of functionally graded material (FGM) sandwich cylindrical shells with porosities on an elastic substrate. Energy approach combined with Galerkin scheme and pseudo-arclength continuation method is used to analyze the effects of core-to-thickness ratio, porosity volume fraction, power-law exponent, and external excitation on the nonlinear forced vibration characteristics of FGM sandwich shells with porosities.

NONLINEAR DYNAMICS (2021)

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Article Engineering, Mechanical