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Title: | Experimental and numerical studies on the quasi-static and dynamic crushing responses of multi-layer trapezoidal aluminum corrugated sandwiches | Authors: | Kılıçaslan, Cenk Güden, Mustafa Kutlay Odacı, İsmet Taşdemirci, Alper |
Keywords: | Corrugated Compression Simulation Multilayers Sandwich |
Issue Date: | May-2014 | Publisher: | Elsevier Ltd. | Source: | Kılıçaslan, C., Güden, M., Odacı, İ. K., & Taşdemirci, A. (2014). Experimental and numerical studies on the quasi-static and dynamic crushing responses of multi-layer trapezoidal aluminum corrugated sandwiches. Thin-Walled Structures, 78, 70–78. | Abstract: | The axial crushing responses of bonded and brazed multi-layer 1050 H14 trapezoid alaluminum corru- gated core (fin) sandwich structures, with and without aluminum interlayer sheets in 0°/0° and 0°/90° core orientations, were both experimentally and numerically investigated at quasi-static and dynamic strain rates. Multi-layering the core layers decreased the buckling stress and increased the densification strain. The experimental and simulation compression stress–strain curves showed reasonable agree-ments with each other. Two main crushing modes were observed experimentally and numerically: the progressive fin folding and the shearing interlayer aluminum sheets. Both, the simulation and experimental buckling and post-buckling stresses increased when the interlayer sheets were constraint laterally. The multi-layer samples without interlayer sheets in 0°/90° core orientation exhibited higher buckling stresses than the samples in 0°/0° core orientation. The increased buckling stress of 0°/0° oriented core samples without interlayer sheets at high strain rate was attributed to the micro-inertial effects which led to increased bending forces at higher impact velocities. | URI: | http://dx.doi.org/10.1016/j.tws.2014.01.017 http://hdl.handle.net/11147/4131 |
ISSN: | 0263-8231 |
Appears in Collections: | Mechanical Engineering / Makina Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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