摘要
Carbon Fiber Reinforced Polymer(CFRP) has such characteristics as light weight, high strength and corrosion resistance, so it is suitable for corrosive environment and large-span structures. This study investigated the stability of CFRP slender column, whose slenderness is greater than Euler’s critical load. The columns in this study were formed by a two-step process and the fiber direction was along the same direction of column axis. Firstly, we obtained the basic mechanical properties of the material by tensile experiment. Then, we studied the critical force of 10 CFRP columns with different lengths and widths by axial compression test. Finally, by comparing Euler’s formula with the modified Euler formula and combining with existing literature and experimental result of this paper, we proposed a modified Perry formula which could well predict the critical force of unidirectional CFRP extruded column and could be used for CFRP extruded column research and engineering design.
Carbon Fiber Reinforced Polymer(CFRP) has such characteristics as light weight, high strength and corrosion resistance, so it is suitable for corrosive environment and large-span structures. This study investigated the stability of CFRP slender column, whose slenderness is greater than Euler’s critical load. The columns in this study were formed by a two-step process and the fiber direction was along the same direction of column axis. Firstly, we obtained the basic mechanical properties of the material by tensile experiment. Then, we studied the critical force of 10 CFRP columns with different lengths and widths by axial compression test. Finally, by comparing Euler’s formula with the modified Euler formula and combining with existing literature and experimental result of this paper, we proposed a modified Perry formula which could well predict the critical force of unidirectional CFRP extruded column and could be used for CFRP extruded column research and engineering design.
基金
Sponsored by the Shandong Provincial Natural Science Foundation,China(Grant No.ZR2018MA029)
