环形气囊地面及水下充气试验及仿真分析

为研究环形气囊在地面及水下的充气特性，对其充气过程展开试验研究和仿真分析。在地面及不同深度的水下开展了环形气囊充气试验，利用高速相机获取了充气过程的影像，并记录充气时间。建立了地面及水下环境中环形气囊充气过程的数学模型，并分析了充气深度对充气过程的影响，发现充气时间与充气深度呈明显的非线性关系。根据分析结果，提出了不同充气深度下使用不同体积气瓶的充气策略，以兼顾环形气囊充气过程的稳定性和灵活性。对比分析环形气囊充气过程的仿真结果与试验结果，发现两者的一致性较好，验证了充气过程数学模型的正确性，这可为水下充气装置的工程设计和应用提供参考。

Test and simulation analysis of inflation process of annular collar on the ground and underwater

In order to study the inflation characteristics of annular collar on the ground and underwater, the test study and simulation analysis of the inflation process of annular collar were carried out. During the inflation test of annular collar on the ground and under different depths of water, the image of inflation process was obtained by a high-speed camera and the inflation time was recorded. A mathematical model was established,which was used to simulate the inflation process of annular collar on the ground and underwater. Based on this model, the influence of the inflation depth on the inflation process was analyzed, which showed that there was a significant nonlinear relationship between the inflation time and inflation depth. According to the analysis result, an inflation strategy using gas containers with different volumes under different depths was put forward,which could balance the stability and flexibility of the inflation process. The results of the simulation and the test show a good agreement, which proves the correctness of mathematical model and provides reference for the engineering design and application of inflatable devics underwater.