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.
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