空间柔性绳网多碎片捕获动力学研究

Capture Dynamics Simulations of a Flexible Net for Multiple Space Debris Pieces Removal

随着空间碎片数量的增加,其对近地轨道中的在轨卫星产生越来越严重的威胁,空间多碎片的高效清理在近年来也成为了学界关注的热点问题。针对柔性绳网在一次任务中同时对多个碎片进行捕获清理的问题,建立了柔性绳网的动力学模型和与碎片接触动力学模型,并对捕获过程中柔性绳网与碎片的运动进行了仿真模拟。针对绳网的最大拉伸力、质量块位移速度等变量,深入分析捕获过程中绳网与碎片的运动特性。数值仿真结果表明,在一次任务中,柔性绳网可以对多个旋转空间碎片进行捕获,并实现稳定的包裹缠绕,展示了柔性绳网良好的捕获能力。

With the increase in the number of space debris,the threat to satellites in low Earth orbit has become increasingly serious.Efficient removal of space debris has also become a hot topic of concern in academia in recent years.This paper aims to address the issue of using a flexible net to simultaneously capture and clean up multiple debris in a single mission.We establish a dynamic model of the flexible net and a contact dynamics model with the debris during the capture process.The motion of the flexible net and debris during the capture process is simulated.In order to gain a deeper understanding of the motion characteristics of the net and debris during the capture process,we investigate:the maximum tensile stress of the net,the displacement and velocity of the mass block etc.,the numerical simulation results show that in a single mission,the flexible net can capture multiple rotating space debris and achieve stable wrapping,demonstrating the excellent capture capability of the flexible net.