航空安全带织带拉伸力学特性研究OA北大核心CSTPCD

Aircraft seat belt is a key component to ensure the safety of passengers.In order to study the tensile mechanical properties of aircraft seat belt webbing,the tensile performance experiments of the AM SAFE seat belt webbing were carried out with the electronic universal testing machine under the loading rates of 6.35 mm/min,30 mm/min,152.4 mm/min,and the gauge segment sizes of 160 mm and 254 mm,and considering the influence of secondary loading.Moreover,three types of seat belt modeling methods,known as the segment belt,the finite element belt,the hybrid belt,were respectively used to simulate and compare the stretching process of seat belt webbing based on the experimental results.The results show that the hysteresis effect of the seat belt webbing is obvious,and the energy dissipation effect is significant;its tensile mechanical properties are little affected by the loading rate,but are greatly affected by the size of the gauge length,and are closely related to the loading times;all three modeling methods can better characterize the tensile mechanical properties of the seat belt webbing.