Research on a Simulation Method for the Impact Resistance Performance of Sealed Airbags
密闭型气囊抗冲击效能仿真方法研究

摘要

气囊具有体积小、重量轻、易于控制等优点，正在安装空间狭小的航空航天大型装备的减震隔震以及航空和军用 物资空投着地缓冲领域得到广泛应用。本文针对如何形成一种计算效率高、收敛性好，适用于工程实际的密闭型气囊 抗冲击效能仿真方法的业界难题，首先应用运动学理论、工程热力学原理及流体力学方程等理论建立起了多构型气囊 的抗冲击数学模型；其次，通过典型工况的有限元仿真与物理试验对构建的气囊抗冲击数学模型进行了评价，结果表 明数学模型具有较高的可信度；最后，采用Qt+VS2010实现了密闭型气囊抗冲击效能仿真平台的开发。本文的研究成 果能够极大提升气囊类产品的正向设计能力并缩短研发周期，具有重要的实际应用价值。

Abstract

Airbags have the advantages of small size, light weight, and easy control, and are being widely applied in shock absorption and vibration isolation for large aerospace equipment with limited installation space, as well as in landing cushioning for the airdrop of aviation and military supplies. To address the industry challenge of developing a simulation method for the impact resistance performance of sealed airbags that offers high computational efficiency, good convergence, and suitability for practical engineering applications, this paper first establishes impact resistance mathematical models for airbags with multiple configurations based on kinematic theory, engineering thermodynamics, and fluid mechanics equations. Then, the established mathematical models are evaluated through finite element simulations and physical tests under typical operating conditions. The results show that the mathematical models have a high level of reliability. Finally, a simulation platform for the impact resistance performance of sealed airbags is developed using Qt and VS2010. The research findings can greatly enhance the forward design capability of airbag products and shorten the research and development cycle, demonstrating important practical application value.