Effect of Volumetric Fiber Fraction on Failure Strength of Thin-Walled GFRP Composite Cylindrical Shell Externally Pressurized

Abstract:

Externally pressurized thin-walled GFRP composite cylindrical shell strength was studied against failure. Fiber breakage, matrix breakage, interlaminate shear deformation, delamination shear deformation and micro buckling failure were investigated employing maximum failure criteria as volumetric fiber fraction factor varied. One-ply cylindrical shell with fiber angle orientation of 0 degree was modeled in ABAQUS finite element simulation and the result was varied using analytical approaches. Moreover, the pressure fluctuations for various volumetric fiber fraction factors were quadratic according to plotted graphs obtained. Meanwhile, MATLAB software was used for theoretical analysis. The comparison of two approaches was proved to be accurate. Subsequently, failure strength of various laminated GFRP cylindrical shell with different fiber angle orientations at each ply was studied for diverse volumetric fiber fraction factors. Stacking sequence, fiber angle orientations were mainly effective on failure strength.

• Periodical: Advanced Materials Research (Volumes 488-489)
• Pages: 530-536
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.488-489.530
• Online since: March 2012
• Authors: Scott Gohery, Abolfazl Golshan, Farzin Firouzabadi, Navid Hosseininezhad
• Keywords: Failure Strength, Finite Element (FE) Simulation, GFRP Composite Cylindrical Shell, Theoretical Analysis, Volumetric Fiber Fraction Factor

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