The Numerical Approach to Mosaic Patterns in Filament-Wound Composite Pipes

Abstract

This paper is focused on radial-compression of filament-wound composite pipes. An important but frequently disregarded is the issue of the choice of the winding pattern. The influence of the pattern on the strength of pipes is the subject of the investigation. Since the real geometry of filament-wound tubes is complicated researchers use simplified models (especially in “zig-zag” area), which are insufficient to reflect real behavior of tubes. An attempt to investigate a more precise geometry is presented in this work. A python script is used to model the particular areas typical for filament-wound elements. Hashin criterion is used to reflect damage in the material during compression. Results of numerical simulations are discussed and compared with experimental from other researchers. Based on the prepared model – the influence of pattern on the strength of a composite pipe is possible. Although some improvements may be introduced, a satisfactory agreement between the experiment and numerical simulation was achieved.