Low velocity impact penetration response of foam core sandwich panels with face sheets

Song, Xuding; Zhao, Mingkai; Wan, Yipin

doi:10.1016/j.ijimpeng.2022.104461

Cited by 17 publications

(5 citation statements)

References 31 publications

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“…The punch links the counterweight block, travels through two smoothly curved guide pillars, and effortlessly strikes the center of sample. 23 The sandwich panel is supported on a steel plate with a circular opening with a diameter of 76 mm. To gather displacement and load history, the pressure sensor is mounted on the impactor’s top.…”

Section: Methodsmentioning

confidence: 99%

Dynamic response and energy absorption of aluminum foam sandwich under low-velocity impact

Wang,

Xiao,

Zhao

et al. 2024

Jnl of Sandwich Structures & Materials

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Aluminum foam sandwich (AFS) are widely used in energy absorption because of their light weight and excellent energy dissipation capabilities. In this study, energy absorption, deformation modes, and dynamic response of AFS under low-velocity impact are investigated using experimental and numerical approaches. Dynamic impact tests are performed utilizing a drop hammer impact test on AFS with different core densities, face sheet thicknesses, and impact energy. Based on the 3D Voronoi foam model, a full-scale finite element model (FEM) is developed to simulate the mechanical response of AFS under low-velocity impact, and verified by experimental results. The contributions of different AFS components to energy absorption at various impact velocities are further analyzed, along with the effects of face sheet thickness distribution. The results indicate that the performance of the face sheet and core and the impact energy have a remarkable influence on the low-velocity impact response and damage modes of the AFS. The type of structure configuration, “thin top and thick bottom,” enables the AFS better play its energy absorption while ensuring the overall light weight. This study provides a reference for the design and optimization of the face sheet thickness of AFS when it is used as an energy-absorbing member and improves their design efficiency.

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Section: Methodsmentioning

confidence: 99%

Dynamic response and energy absorption of aluminum foam sandwich under low-velocity impact

Wang,

Xiao,

Zhao

et al. 2024

Jnl of Sandwich Structures & Materials

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“…Then, in order to predict the damage behavior of the E glass/epoxy composite laminate of FML face sheets, 3D Hashin and Puck failure criteria, which have been used as computational models for predicting damage in composites due to their ease of use and conceptual simplicity [42,43], were employed in this study. The four failure modes are shown in Equations ( 2)- (5).…”

Section: Materials Models Of the Fml Face Sheetsmentioning

confidence: 99%

“…The top and bottom face sheets of composite sandwich structures act as a protective layer against external loads. There are many common face sheet types for composite sandwich panels [5][6][7][8][9][10], e.g., wood materials, metal materials, fiber reinforced plastics composite materials, etc. In recent years, a new face sheet, fiber metal laminate (FML), which combines the performance advantages of metal alloy and composite materials, has attracted much attention due to its excellent impact resistance and high specific strength/stiffness [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Impact Resistance of a Fiber Metal Laminate Skin Bio-Inspired Composite Sandwich Panel with a Rubber and Foam Dual Core

Zhang

Yang

et al. 2023

Materials

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This paper reports the development of a novel bio-inspired composite sandwich panel (BCSP) with fiber metal laminate (FML) face sheets and a dual core to improve the low-velocity impact behavior based on the woodpecker’s head layout as a design template. The dynamic response of BCSP under impact load is simulated and analyzed by ABAQUS/Explicit software and compared with that of the composite sandwich panel (CSP) with a single foam core. The impact behavior of BCSP affected by these parameters, i.e., a different face sheet thickness, rubber core thickness and foam core height, was also reported. The results show that BCSP has superior impact resistance compared to CSP, with a lower damage area and smaller deformation, while carrying a higher impact load. Concurrently, BCSP is not highly restricted to any particular region when dealing with stress distributions. Compared to CSP, the bottom skin maximum stress value of BCSP is significantly reduced by 2.4–6.3 times at all considered impact energy levels. It is also found that the impact efficiency index of BCSP is 4.86 times higher than that of CSP under the same impact energy, indicating that the former can resist the impact load more effectively than the latter in terms of overall performance. Furthermore, the impact resistance of the BCSP improved with the increase in face sheet thickness and rubber core thickness. Additionally, the height of the foam core has a notable effect on the energy absorption, while it does not play a significant role in impact load. From an economic viewpoint, the height of the foam core retrofitted with 20 mm is reasonable. The results acquired from the current investigation can provide certain theoretical reference to the use of the bio-inspired composite sandwich panel in the engineering protection field.

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“…3 Because of such unique features, researchers have become increasingly interested in sandwich structures in recent years. Wang et al 4 focused on metal foam sandwich structures. They studied the dynamic response of an aluminum foam sandwich panel under low-velocity impact loads based on energy methods and experimental tests.…”

Section: Introductionmentioning

confidence: 99%

Transient nonlinear responses of a sandwich plate with micro-cellular auxetic core based on modified strain gradient theory under impact loads

Akhavan Alavi,

Ghajar

2024

Jnl of Sandwich Structures & Materials

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This study investigates the nonlinear dynamic response of an auxetic sandwich structure under impact load. The core is made of a micro-cellular auxetic structure. The main point of interest is studying the micro-cellular core properties’ effects on the structure’s nonlinear dynamic response. First, the mechanical properties of the micro-cellular auxetic core are introduced based on modified strain gradient theory (MSGT), followed by experimental and numerical validation. Then, Hamilton’s principle is applied to derive the sandwich structure’s nonlinear governing partial differential equations. Lastly, Galerkin’s method paved the way to achieving the final solution. So as to perform frequency-response analysis, the four-dimensional averaged equations are obtained using the perturbation method. In order to carry out experimental validation, a nanosecond laser system is used for micro-cellular auxetic sample fabrication, and the tensile tests are carried out per ISO 6892 standard. The comparison between the experimental and the theoretical results indicates an excellent agreement among the results. It can be concluded that MSGT plays a significant role in the mechanical properties and the nonlinear dynamic response of the micro-cellular auxetic structures. The present study is applicable in the field of protective panels, sensors, and energy harvesters.

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Low velocity impact penetration response of foam core sandwich panels with face sheets

Cited by 17 publications

References 31 publications

Dynamic response and energy absorption of aluminum foam sandwich under low-velocity impact

Dynamic response and energy absorption of aluminum foam sandwich under low-velocity impact

Impact Resistance of a Fiber Metal Laminate Skin Bio-Inspired Composite Sandwich Panel with a Rubber and Foam Dual Core

Transient nonlinear responses of a sandwich plate with micro-cellular auxetic core based on modified strain gradient theory under impact loads

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