The edgewise compressive behavior and failure mechanism of the composite Y-frame core sandwich column. (January 2020)

• Record Type: Journal Article
• Authors: Liu, Jialin; Li, Can; Deng, Sihua; Liu, Jiayi; Huang, Wei
• Is Part Of: Polymer testing. Volume 81(2020)
• Publication Date: 2020-01
• Subjects: Sandwich column -- Y-frame core -- Edgewise compression -- Mechanical behavior; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2019.106188
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: A novel fabrication method was developed to fabricate the composite Y-frame core sandwich columns by hot-press molding method. The Y-frame core sandwich columns with different relative densities were obtained by hot-press molding method. The edgewise compressive tests were conducted. From the edgewise compressive tests, the mechanical behavior of the Y-frame core sandwich columns was recorded and analyzed. The effects of relative density on the failure modes, failure load and load-displacement curves were investigated. The dominant failure modes of the Y-frame core sandwich columns were macro buckling. The analytical prediction on the failure load of the Y-frame core sandwich column was presented, which was based on the macro buckling. The failure loads of the Y-frame core sandwich column at different relative densities were predicted with proposed method and compared with the experimental results. Highlights: The manufacturing process of the composite Y-frame core sandwich column was presented. The failure modes and edgewise compressive load-displacement curves were recorded. The effects of relative density on the edgewise compressive behavior of the composite Y-frame core sandwich column was investigated by experiments. The analytical model was presented to predict the failure load, which was close to the experimental results.