【摘要】 二维编织绳索被广泛应用于工程、航空航天等诸多领域，其中十二股二维编织聚对苯并噁唑（PBO）绳索具有优良的性能。以十二股二维编织PBO绳索为研究对象，对绳索的编织规律和力学性能进行研究，借鉴圆形编织法，得到不同结径比绳索的模型，对绳索模型截取代表性体积单元，施加周期性边界条件进行有限元仿真，并进行不同结径比绳索拉伸实验，探究结径比对绳索强度的影响，将模拟结果与实验结果进行对比。结果表明：随着结径比增大，绳索承受的最大拉力先显著增大后基本不变；适当的结径比能使十二股二维编织绳索抗拉性能有效地发挥。更多还原

【Abstract】 Two-dimensional braided rope is widely used in engineering, aerospace and many other fields, among which 12-strand two-dimensional PBO braided rope has excellent properties. Taking the 12-strand two-dimensional braided PBO rope as the research object, assuming that the cross section of the fiber bundle was circular, the braiding law and mechanical properties of the rope were studied. Using the circular braiding method for reference, the rope models with different knot diameter ratios were obtained. The representative volume elements of the rope model were intercepted and the periodic boundary conditions were applied for finite element simulation. The rope tensile experiments with different knot diameter ratios were carried out to explore the influence of knot diameter ratio on the rope strength. The simulation results were compared with the experimental results. The results show that with the increase of knot diameter ratio, the maximum tensile force that the rope increases significantly at first and then basically remains unchanged. An appropriate knot diameter ratio can effectively give play to the tensile performance of 12-strand two-dimensional braided rope, it promotes the study of mechanical properties of two-dimensional braided rope.更多还原