In this article, we proposed a new approach to design the winding patterns of filament-wound composite pressure vessel with unequal polar openings with non-geodesics. To ensure the continuity of winding angles between trajectories along the cylinder and the dome, the non-geodesics for cylindrical part were used. The developed winding patterns of the vessels were simulated using the MATLAB software to verify the feasibility of the acquired trajectories. To demonstrate the performance in designing the winding path for big polar ratios, we analyzed vessels with polar pole ratios of 1:2–1:4, respectively. The developed winding patterns have successfully achieved uniform fiber distributions along the mandrel without severe overlap, except for the polar pole regions. To avoid the severe overlap between filament bands, we further studied the relationship among the winding pattern, bandwidth, and the number of tangent points, and derived a suitable bandwidth based on the winding pattern. These simulated results proved the effectiveness of the developed method in design of winding pattern with unequal polar openings.

中文翻译：

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基于非测地线的不等开口纤维缠绕复合压力容器缠绕方式设计

在本文中，我们提出了一种新的方法来设计具有非测地线的不等极开口的纤维缠绕复合压力容器的绕组模式。为了确保沿圆柱体和圆顶的轨迹之间缠绕角度的连续性，圆柱部分使用了非测地线。使用 MATLAB 软件对开发的船只缠绕模式进行模拟，以验证所获得轨迹的可行性。为了证明设计大极比的绕道的性能，我们分别分析了极极比为 1:2–1:4 的容器。开发的缠绕模式已成功实现沿心轴的均匀纤维分布，除了极地区域外，没有严重重叠。为了避免灯丝带之间的严重重叠，我们进一步研究了绕线方式、带宽和切点数之间的关系，并根据绕线方式推导出合适的带宽。这些模拟结果证明了所开发方法在设计具有不等极开口的绕组模式中的有效性。