Stiffness and failure behaviour of folded sandwich cores under combined transverse shear and compression

Multiscale Modeling Methods for Analysis of Failure Modes in Foldcore Sandwich Panels

“…Depending on core material and the experimental setup the coefficient differs between a linear and quadratic interpolation. In [23] the failure was investigated experimentally for foldcores with a zick-zack fold pattern. A linear correlation was identified to fit the best the experimental results.…”

Transverse shear stiffness of a chevron folded core used in sandwich construction

“…The strength of chevron folded cores has been experimentally investigated by Basily and Elsayed (2004b), Kintscher et al (2007) and Nguyen et al (2005a) and it has been numerically simulated by Nguyen et al (2005a), Heimbs et al (2006) and Heimbs (2009). Moreover, their transverse shear stiffness has been experimentally investigated by Kintscher et al (2007) but, to the authors knowledge, no theoretical work has been done yet.…”

“…Truss core panels using new welding techniques are raising interest because of their strength (Wicks and Hutchinson, 2001;Wadley, 2002;Cote et al, 2007). Folded cores are promising because of new production means (Basily and Elsayed, 2004b;Nguyen et al, 2005a;Heimbs et al, 2006;Kintscher et al, 2007). Among them, the chevron folded core was probably the first to be manufactured (Fig.…”

“…Moreover, their transverse shear stiffness has been experimentally investigated by Kintscher et al (2007) but, to the authors knowledge, no theoretical work has been done yet.…”

On the behaviour characterization of metallic cellular materials under impact loading

“…Mohr and Doyoyo [21,22] modified the standard Arcan apparatus into a clamped configuration to constrain the rotations of the grips during the tests of combined out-of-plane shear-compression behaviour of honeycombs. Based on the Zwick static test facility, Kintscher et al [23] developed a test device with the combination of a roll and a steel towing rope to apply combined out-of-plane shear-compression to the folded sandwich double-core specimen. Hong et al [24,25] established two systems (so-called the independently controlled test fixture and the inclined test fixture) to perform the quasi-static biaxial experiment on honeycombs.…”