# Analysis of Mechanical Properties of Air-Ribbed Skeleton Membrane Structure
## 1 Introduction  
The air-ribbed skeleton membrane structure is made up of air ribs and a membrane. Some air ribs constitute frames that act as supports, and the membrane acts as a surface [1]. The new membrane structure features a simple design, modular expansion, ground assembly, rapid deployment, efficient transport capacity, and large-span spatial shaping [2]. At present, more attention has been paid to the air-ribbed skeleton membrane structure from various fields such as medicine, military, aviation, outdoor camping, and others. This subject is believed to have potential value [3]. A small membrane structure with air ribs can be rapidly extended in daily life [4, 5]. When the span and area of the membrane structure are larger than 6 m and 50 m\({}^{2}\), a large amount of gas should be filled into the ribs to support the structure. With the increase in the size of the structure, it becomes more complex and more time is consumed to extend it. Therefore, a new inflatable membrane structure has to be designed [6]. Scholars have analyzed the strength and bearing capacity of air-ribbed membrane structures with different structural forms. [PERSON] et al. [7] studied the collapse behavior of the inflatable single-arch structure by simulation and experiments; the stress at the junction is compared when the shape of the surface is different. [PERSON] [8] proposed curved and-arched membrane structures as the research objects. He explored the failure performance of the membrane structures while increasing the load gradually. [PERSON] et al. [9] developed a membrane structure with upright folded air ribs and added a buffer gate structure based on the applicable scene. [PERSON] et al. [10] established a model of an inflatable hangar, which is closely connected with upright arched air ribs. They analyzed the wind pressure distribution on the structure at different wind angles and evaluated the strength. [PERSON] et al. [11] designed a structure whose main body was semi-elliptical, air-ribbed arches and the shape changed gradually. They analyzed the overall stress of the structure and modified the simulation model based on actual observation data. [PERSON] et al. [12] established membrane structure models with arched and curved air ribs as supporting structures, respectively. Through load response analysis, they determined that the bearing capacity of arched air ribs was better than that of curved air ribs. [PERSON] et al. [13] analyzed the structure of the arched air rib retractable membrane through the fluid-solid coupling analysis method. They obtained the wind vibration coefficient for each partition of the membrane structure. [PERSON] et al. [14] studied the influence of four factors (surface pressure, air rib pressure, the ratio of length and width, and the ratio of height and span) on the structural and mechanical properties. They found that the internal pressure had little impact on resisting snow load. The continuous arch is used in the existing air rib membrane structure, which can be formed once it is inflated. However, it cannot be repaired immediately when the notch appears on the air ribs, leading to the failure of the membrane structure. Therefore, the anti-accident ability of the air rib membrane structure should be improved to ensure normal use. The optimization of the membrane structure is mainly based on the parameters of the main structure and the exploration of external factors that influence membrane structure failure. Consequently, establishing external structures similar to the wind rope is of great significance to improve the performance of the membrane. ANSYS is widely used in the numerical simulations of membrane or air rib structures [15; 16]. The advantages of ANSYS in solving conventional linear and coupled problems are simple modeling and high-speed calculation. The air-ribbed membrane structure is composed of flexible parapulin and air ribs, which deform seriously under load.