Large-deformation FSI analysis of airbag deployment based on fixed mesh using level-set virtual particles

针对大变形流固耦合问题，提出了一种基于固定网格的方案，该方案具有水平集界面表示、虚拟粒子界面处理以及流体变量/结构变量/水平集的分区强耦合算法等三大特点。从展开气囊展开和折叠气囊展开的数值结果证实所提出的方案适用于大变形FSI问题。

A fixed mesh-based scheme was developed for large-deformation fluid-structure interaction, which has three features such as level-set interface representation, interface treatment using virtual particles and partitioned strong coupling algorithm of fluid variables/structural variables/level sets. It was confirmed that the developed scheme is applicable to the large-deformation FSI problems from the numerical results of unfolded airbag deployment and folded airbag deployment.