Influence of fiber slippage coefficient distributions on the geometry and performance of composite pressure vessels

Abstract

In this article, the effects of several slippage coefficient distributions on the geometry, fiber trajectories, and the structural efficiency of non-geodesic domes are evaluated for composite pressure vessels. Several functions, which ensure C 1 continuity of the winding trajectories, are respectively used to describe the slippage coefficient distributions along the fiber paths. With the aid of the fiber slippage law and the optimality condition of equal shell strains, the differential equations that govern the non-geodesics-based dome shapes and related fiber trajectories are formulated. The meridian profiles and winding angle developments of the carbon-epoxy domes are obtained based on the given slippage coefficient distributions; their structural performances are then determined and compared with each other. The results conclude that the nongeodesic dome designed using the maximum constant slippage coefficient exhibits better performance than those using other slippage coefficient distributions; this is mainly triggered by maximum utilization of the longitudinal strength of the laminate. It is also revealed that the structural efficiency of domed pressure vessels can be improved using non-geodesics that provide higher degrees of freedom in the design of filament wound structures. POLYM. COMPOS., 37:315-321, 2016.

Design method of variable slippage coefficient non‐geodesic filament‐wound composite pressure vessels

“…The specific formulas can be found in references [13,30]. The material constants for the numerical example using a unidirectional carbon/ epoxy composite can be found in reference [25]. The stress distribution under various geometric parameters is obtained as shown in Figure 5.…”

“…Zu et al 24 presented an optimal design to minimize the mass of non-geodesic-based toroidal vessels, incorporating classical lamination theory, the Tsai-Wu criterion, and manufacturable constraints. Zu et al 25 proposed an integral design method for determining non-geodesics based on dome shapes and related fiber trajectories, evaluating the influence of slippage coefficient distributions on meridian shape, fiber trajectories, and structural performance of resulting domes. References [24,25] set the variable slippage coefficient as a continuity function, yet the winding trajectory based on the variable slippage coefficient generated by the shell itself has not been explored.…”

Comparison of mechanical properties of the Type 1 and Type 2 composite hydraulic cylinder designs: A numerical study

“…Therefore, many studies have been conducted on composite pressure vessels and pipes to improve mechanical and dynamic properties. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] In the study conducted by Firouzsalari et al, [2] various flax fabric reinforced composite pipes were manufactured and subjected to experimental burst tests under internal pressure to determine the effect of the layer number and pipe diameter. Radial and axial strains from the pipe surfaces as well as leakage and burst pressures were obtained and the relevant results were compared.…”

Design of the composite hydraulic cylinder with geodesic dome trajectory: A numerical study

“…It has been seen from the literature that composite materials are frequently used in high-pressure fluid storage tanks and transportation systems, and many scientific studies have been carried out to improve mechanical properties. [2][3][4][5][6][7][8][9] It has been clearly seen that metal or polymer liners in the storage tanks are wrapped with composite materials, and these structures provide significant advantages due to their lightness and higher strength. These structures, which are preferred in many different areas from the oxygen storage systems for the aircrafts to the fuel storage tanks of public transportation vehicles, offer high corrosion resistance, long service life, and less maintenance cost.…”