Buckling Behavior of Metallic Cylindrical Shell Structures Strengthened with CFRP Composite

Abstract

e objective of this study is to evaluate the effect of a CFRP composite layer on the buckling behavior of metallic cylindrical shells. To enhance the bearing capacity of steel shells, classical solutions consider internal or external metallic stiffeners (stringers and/or rings) welded or riveted to the shell. Here, an external skin of composite material which wraps the whole metallic skin of the shell is studied. To be valid for metallic shells structures (storage tanks like silos) as well as for metal pipes (gas or oil pipeline), the procedure for setting up and implementing the composite must be simple. e recommended solution is therefore tested through experimental tests to find their limits and the configuration of optimal behavior. A consistent enhancement of bearing capacity is observed. is experimental base serves also to consolidate a numerical model which corroborates the experimental results. e good correlation between experimental and numerical results is confirmed for the whole loading process, for unstiffened and stiffened shells. For metallic unstiffened shell, an adequacy between experiment and simulation is noticed in the mainly membrane precritical behavior, during the buckling initiation characterized by the boundary layer problem corresponding to axisymmetric wavelength appearance near boundaries and in the postcritical domain associated to localization of the buckling mode at one extremity of the shell. For stiffened configuration, the enhancement of the bearing capacity of the shell is correctly gauged; this confirms the possibility to use finite element simulation for the design.

A Numerical Study for Novel Thin-Walled Compound Structures Made of PPR Material Reinforced with AL Shells

“…Interestingly, a combination of metallic tubes (e.g., aluminum shells) and nonmetallic tubes (e.g., glass or carbon fibres) can lead to more increments in the improvement of crashworthiness properties and sustainability of performance [Bai et al, 2021;Draidi et al, 2018]. Although studies in this area have been limited, these have achieved remarkable successes; however, there were some obstacles relating to the high costs and mechanical properties of these fibres, in particular their brittleness [Sun et al, 2016;Atthapreyangkul and Prusty, 2017].…”

Experimental Analysis of Seismic Performance of Masonry Shear Wall Reinforced with PP‐Band Mesh and Plastering Mortar under In‐Plane Cyclic Loading

“…At present, many methods have been proposed for the reinforcement of masonry structures, such as reinforced concrete mortar layer and vertical reinforcement, external posttensioned technique, and external FRP reinforcement methods [4][5][6][7][8][9][10][11][12][13]. ese methods are applied in many reinforcement projects.…”

Experimental and Numerical Investigation on Carbon Fiber‐Reinforced Polymer‐Strengthened Concrete Beam after High‐Temperature Action of Asphalt Paving Construction

“…Due to its special material properties, it has shown good ability in improving structural load-carrying capacity. Many researchers studied the performance of the CFRP-strengthened structures [1][2][3][4][5]. Structural performance of the fiberreinforced polymer-(FRP-) concrete composite bridge deck was studied experimentally and numerically by Tian et al [1].…”

“…Structural performance of the fiberreinforced polymer-(FRP-) concrete composite bridge deck was studied experimentally and numerically by Tian et al [1]. CFRP-strengthened metallic shell was studied by Draidi et al [2], and the buckling behavior was evaluated. e steel-FRP composite bar-(SFCB-) reinforced concrete beam was investigated by Sun et al [3], the moment-curvature behaviors were studied, and a design reference for the SFCB structure was provided.…”