Abstract
In this study, finite element analysis (FEA) of composite overwrapped pressure vessel (COPV), using commercial software ABAQUS 6.12 was performed. The study deals with the simulation of aluminum pressure vessel overwrapping by Carbon/Epoxy fiber reinforced polymer (CFRP). Finite element method (FEM) was utilized to investigate the effects of winding angle on filament-wound pressure vessel. Burst pressure, maximum shell displacement and the optimum winding angle of the composite vessel under pure internal pressure were determined. The Laminae were oriented asymmetrically for [00,00]s, [150,-150]s, [300,-300]s, [450,-450]s, [550,-550]s, [600,-600]s, [750,-750]s, [900,-900]s orientations. An exact elastic solution along with the Tsai-Wu, Tsai-Hill and maximum stress failure criteria were employed for analyzing data. Investigations exposed that the optimum winding angle happens at 550 winding angle. Results were compared with the experimental ones and there was a good agreement between them.
Highlights
The wide range of pressure vessel applications turned it into one of the most important equipment of industry
Gohari et al [13] compared finite element analysis with theoretical studies to ascertain that static internal pressure and fiber angle orientation have the direct effect on stress distribution of composite vessel
In order to reduce the time of calculation, the finite element model has been made for half the composite pressure vessel as it is indicated at the figure 3.The mesh is constant for the whole part and because the model has been made due to the revolving process, the “Quad-dominated” meshing type has been selected
Summary
The wide range of pressure vessel applications turned it into one of the most important equipment of industry. The experimental and finite element analyses were applied to determine the proper composite thickness based on the value of burst pressure. Sayman et al [12] did the experimental study at GRP composite cylinders to survey the effects of temperature and winding angle on strength of composite vessels. Gohari et al [13] compared finite element analysis with theoretical studies to ascertain that static internal pressure and fiber angle orientation have the direct effect on stress distribution of composite vessel. Xu et al [15] utilized finite element analysis to predict burst pressure of the composite storage vessel. The simulation results obtained from ABAQUS were in good agreement with the experimental ones In this present research attempts have been made to: Determine the burst pressure and the maximum shell displacement for asymmetric fiber orientations of composite vessel.
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