A coupled control volume (CV) and arbitrary Lagrangian–Eulerian (ALE) model was developed to analyse the section geometry of a flexible bag of an air cushion vehicle (ACV) subjected to slamming loads. The model was validated using benchmark tests. The effects of the initial velocity, Young's modulus of the flexible bag, ballast weight, in addition to bag-to-cushion pressure ratio on the section geometry were investigated. Subsequently, an empirical equation was proposed to predict the section geometry in the ultimate state. The results obtained herein can serve as a guide for the design of a flexible bag and driver assistance system of an ACV.

中文翻译：

---

冲击载荷作用下气垫车软袋截面几何形状的数值研究

开发了耦合控制体积（CV）和任意拉格朗日–欧拉（ALE）模型，以分析承受冲击载荷的气垫车（ACV）柔性袋的截面几何形状。该模型已使用基准测试进行了验证。研究了初始速度，柔性袋的杨氏模量，压载重量以及袋与垫层的压力比对截面几何形状的影响。随后，提出了一个经验方程式来预测最终状态下的截面几何形状。本文获得的结果可为ACV的软袋和驾驶员辅助系统的设计提供指导。