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由于采用缠绕加工方法,纤维缠绕的压力容器(如火箭发动机外壳)的圆顶厚度是不均匀的,外壳形状、纤维带宽及两端圆顶开口影响着外壳厚度。本文提出多种方法对圆顶厚度,特别对纤维叠加增厚的圆顶窗口附近区域的厚度进行了预测。新研制的模型与各种纤维缠绕的外壳的实测厚度进行了比较。发现用宽纤维带制成的外壳的厚度可以精确地预先计算出来。但是由窄纤维带制做的外壳厚度在圆顶窗口区附近与预测值不一致,这是由于生产和固化阶段发生纤维的移动和重排的缘故。
Due to the winding process, the thickness of the dome of a fiber-wound pressure vessel, such as a rocket motor enclosure, is not uniform. The shape of the shell, the width of the fiber, and the opening of the dome at both ends affect the thickness of the shell. In this paper, a variety of methods are proposed to predict the thickness of the dome, especially the thickening of the area around the dome window. The newly developed model is compared with the measured thickness of various fiber wound shells. The thickness of the shell made of wide fiber tape was found to be precisely pre-calculated. However, the thickness of the shell made of narrow fiber bands is inconsistent with the predicted value near the dome window due to fiber movement and rearrangement during the production and curing stages.