Reviewing some design issues for filament wound composite tubes: Fid-Bau Portal

Reviewing some design issues for filament wound composite tubes

Martins, L.A.L. / Bastian, F.L. / Netto, T.A.

Highlights • The minimum tube length in hydrostatic testing should have a ratio of L/D =12. • The optimum wind angle for closed, restrained and open-end condition was obtained. • The failure pressure is a linear function of the parameter h/R. • A correlation between split disk test and the loading conditions was observed.

Abstract This article discusses important aspects of the design of composite tubes manufactured by filament winding. The work was divided into three parametric studies. The first study was conducted to determine the minimum length that can represent an infinite tube in hydrostatic testing. The second study was conducted in order to find the optimum wind angle of composite tubes subjected to internal pressure under different end conditions. The purpose of the last one was to study the influence of diameter and thickness on the failure pressure during tube burst tests. A progressive failure analysis was performed using ABAQUS software employing a damage model implemented by a user subroutine (UMAT). The models used were validated using experimental data obtained from tube burst tests in previous studies. The results provide a better understanding of the behavior of composite tubes under internal pressure thereby making possible to improve design practices used in industry.