R Rafiee - Assistant Professor
H Hesamsadat - M.Sc. Student, Composites Research Laboratory, Faculty of New Sciences and Technologies, University of Tehran, End of The North Karegar St., Tehran, ۱۴۳۹۹۵۵۹۴۱, Iran

In this study, a parametric finite element modeling is developed to analyze failure modes of FRP pipes subjected to internal pressure. First-ply failure pressure and functional failure pressure was determined by a progressive damage modeling and then it is validated using experimental observations. The influence of both winding angle and fiber volume fraction is studied on the functional failure of FRP pipes and it corresponding pressure. It is observed that despite the fact that increasing fiber volume fraction will enhance the mechanical properties, it will be resulted in lower values for functional failure pressure. This shortcoming can be compensated by modifying the winding angle in angle plies of pipe wall structure.

Composite pipe, Functional failure, Progressive modeling, Winding angle