Title: Quasi-Static Crush of Additively Manufactured Honeycomb Structures with Buckling Initiators

Authors: Young T. Choi and Norman M. Wereley

DOI: 10.33599/nasampe/c.24.0334

Abstract: This study addresses the method to maximize crashworthiness performance of honeycomb structures by decreasing the initial peak collapse stress without reducing the plateau stress. To this end, buckling initiators (BIs) were configured at hexagonal honeycomb structures to achieve the smooth transient from the initial linear elastic region to the plateau stress region. An additive method (i.e., 3D printing) with an acrylonitrile-butadiene-styrene (ABS) 3D filament material was used to fabricate hexagonal honeycomb structures with and without BIs. Using an MTS machine, the stress-strain curves of the honeycomb structures were measured. Based on the measured stress-strain data, the mean crush stress, energy absorption efficiency, and strain-dependent crush efficiency were determined to assess the crashworthiness performance of these honeycomb structures. The effects of the BI size, height location, and placement on the crashworthiness performance of honeycomb structures were investigated.

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Conference: CAMX 2024 | San Diego CA

Publication Date: 2024/9/9

SKU: TP24-0000000334

Pages: 16

Price: $32.00