Study on The Stability of Fiber Reinforced Thermoplastic Vessel Liner

Due to the particularity of the properties of the plastic liner material, the stability of the liner must be taken into account in the manufacture and inspection of the liner, especially the fiber winding. In this paper, the finite element buckling method is used to analyze the stability of the high density polyethylene liner, and the linear critical buckling load and the nonlinear critical buckling load are calculated respectively. The buckling morphology and load-displacement curve of the liner are obtained. Based on this analysis, the influence of the thickness of the liner and the aspect ratio on the two buckling loads is analyzed.