Experimental Investigation of GFRP Laminate Thin-Walled Column Subjected to Uniform Compression

Abstract:

This paper presents the results of experimental investigation of thin-walled GFRP laminate columns with square cross-section subjected to uniform compression. Column under consideration are made of eight ply laminate with different quasi-isotropic layer arrangement. The following three cases of layers arrangement are taken into consideration: CS1 [45/-45/45/-45]_S, CS2 [45/-45/0/0]_S and CS3 [45/-45/45/0]_S. The analysed columns have the length of 250 mm and following cross-section dimensions (width × height × thickness of the wall): 82 × 82 × 2.08 mm.The main aim of experimental investigation has been to compare the way of buckling load and postbuckling behaviour determinations. The layer arrangement influence on buckling load and postbuckling stiffness have been also checked. Two different methods (P-w² method and "inflection point" method) of determining buckling force P_cr and two different measurement technique (i.e. strain-gauges technique and stereographic transformations technique) have been employed.

• Periodical: Solid State Phenomena (Volume 240)
• Pages: 185-190
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.240.185
• Online since: August 2015
• Authors: Paweł Czapski*, Tomasz Kubiak, Mariusz Urbaniak
• Keywords: Buckling, Digital Image Correlation, Laminates, Postbuckling Behavior, Strain-Gauge Measurements, Thin-Walled Columns

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