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Main Title: Dealing with Nap-Core Sandwich Composites: How to Predict the Effect of Symmetry
Author(s): Ha, Giap
Zehn, Manfred
Marinković, Dragan
Fragassa, Cristiano
Type: Article
Language Code: en
Abstract: The behavior of nap-core sandwiches was investigated with a special focus on the effect of symmetry in nap cores. A nap-core is, in general terms, a 3D-formed hollow structure made of knitted textile impregnated by a thermosetting resin. The molding process determines if the nap-core is double-sided (symmetric) or single-sided. The sandwich with nap-core owns various remarkable properties of a novel lightweight material, but the nap-core’s complex structure makes the prediction of these properties a difficult task. While the analysis of a single-sided nap-core sandwich has been presented by the authors before, this study is focused on the simulation of symmetric nap-core sandwich. Overall, performance of the structure is examined with respect to several loading conditions. The simulation approach invokes a typical homogenization scheme to find the engineering properties of the nap-core’s fabric with least computational time and memory resources. Results from experiments and simulations exhibit a good compatibility, which prove the fitness of the modeling method.
Issue Date: 15-Mar-2019
Date Available: 23-Aug-2019
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): textiles
material layers
composite properties
numerical models
Journal Title: Materials
Publisher: MDPI
Publisher Place: Basel
Volume: 12
Issue: 6
Article Number: 874
Publisher DOI: 10.3390/ma12060874
EISSN: 1996-1944
Appears in Collections:FG Strukturmechanik und Strukturberechnung » Publications

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