Topic
Sandwich panel
About: Sandwich panel is a research topic. Over the lifetime, 4665 publications have been published within this topic receiving 49812 citations.
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TL;DR: In this article, the authors compare the resistance with damage of various types of double bottom structures in a stranding event using a commercial, explicit finite element program and show that it is indeed possible to elevate the crashworthiness of side and bottom structures with regards to the loading considered here without increasing the structural weight.
80 citations
TL;DR: In this paper, the responses of metallic plates and sandwich panels to localized impulse were examined by using a dynamic plate test protocol supported by simulations. Butler et al. found that the honeycomb panel is superior to a solid plate when subjected to a planar impulse, but inferior when localized.
Abstract: The responses of metallic plates and sandwich panels to localized impulse are examined by using a dynamic plate test protocol supported by simulations. The fidelity of the simulation approach is assessed by comparing predictions of the deformations of a strong-honeycomb-core panel with measurements. The response is interpreted by comparing and contrasting the deformations with those experienced by the same sandwich panel (and an equivalent solid plate) subjected to a planar impulse. Comparisons based on the center point displacement reveal the following paradox. The honeycomb panel is superior to a solid plate when subjected to a planar impulse, but inferior when localized. The insights gained from an interpretation of these results are used to demonstrate that a new design with a doubly-corrugated soft core outperforms solid plates both for planar and localized impulses.
79 citations
TL;DR: In this article, a double-shear configuration of glass fiber reinforced polymer (GFRP) shear connectors was used to reduce thermal bridging in insulated concrete sandwich panels compared to steel connectors.
Abstract: Glass fiber–reinforced polymer (GFRP) shear connectors provide much reduced thermal bridging in insulated concrete sandwich panels compared to steel connectors. In this study, 50 specimens with dimensions of 254×254×900 mm representing segments of a precast sandwich wall comprising two concrete wythes and a concrete stud surrounded by insulation foam have been tested in a double-shear configuration. Three types of GFRP connectors produced from available sand-coated and threaded rods were tested and compared to conventional steel and polymer connectors. GFRP connector diameters varied from 6 to 13 mm, and spacing varied from 80 to 300 mm. Both circular and rectangular cross sections were examined, along with various end treatments to compare with simple straight embedment. The shear strength of GFRP connectors, including the effect of friction between concrete and foam, ranged from 60 to 112 MPa, significantly higher than polymer connectors but lower than steel connectors. As the connectors bridge...
79 citations
TL;DR: In this paper, a geometrically nonlinear higher-order theory was used to estimate the vertical displacements of soft-core sandwich beams up to high load levels with a great accuracy.
78 citations
TL;DR: In this article, a multi-objective optimization procedure is presented to design material properties of honeycomb core sandwich panels for minimum weight and maximum thermal resistance within the context of origami-inspired shelters.
78 citations