African ostriches are good at running in the desert, and their toenails can effectively improve the tractivetraction performance in the running process. To improve the tractivetraction trafficability of wheels on the lunar surface loose soil, a wheel with bionic wheel lugs was designed based on the bionic prototype of ostrich toenail and bionic engineering technology. Then, the rolling of the bionic wheel was simulated by using the three-dimensional (3D) discrete element method (DEM) simulation system of the interaction between irregular structure wheel and lunar soil, and the result was compared with that of the wheel with rectangular wheel lugs. Under the same working condition, the drawbar pull, torque, and sinkage of two kinds of wheels at slip ratios of 0.25, 0.375, and 0.625 were analyzed. The simulation results showed that the average drawbar pull and average torque of the bionic wheel are greater than that of the wheel with rectangular wheel lugs at three kinds of slip ratios. When the slip ratios were 0.25 and 0.375, there was almost no difference in the average sinkage of the two kinds of wheels, but the average sinkage of the bionic wheel was significantly less than that of the wheel with rectangular wheel lugs when the slip ratio was 0.625. The results show that, compared with the wheel with rectangular wheel lugs, the bionic wheel has better tractivetraction and anti-subsidence performance. This study provides a new design and research method for improving the tractive trafficability of wheels in the lunar loose surface environment.

非洲鸵鸟擅长在沙漠中奔跑，它们的脚趾甲可以有效地改善奔跑过程中的牵引性能。为了提高车轮在月球表面松散土壤上的牵引运输能力，基于鸵鸟脚趾甲的仿生原型和仿生工程技术，设计了带有仿生轮耳的车轮。然后，使用不规则结构轮与月球土壤相互作用的三维（3D）离散元方法（DEM）模拟系统对仿生轮的滚动进行了模拟，并将结果与​​矩形轮进行了比较。轮耳。在相同的工作条件下，分析了两种车轮在滑移率分别为0.25、0.375和0.625时的牵引力，扭矩和下沉。仿真结果表明，在三种滑移率下，仿生轮的平均牵引杆拉力和平均扭矩均大于带有矩形轮耳的车轮。当滑移率分别为0.25和0.375时，两种车轮的平均下沉几乎没有差异，但是当滑移率为0时，仿生轮的平均下沉明显小于带有矩形轮耳的车轮的平均下沉。 0.625。结果表明，与具有矩形轮耳的轮相比，仿生轮具有更好的牵引力和防陷性能。这项研究提供了一种新的设计和研究方法，以改善月球在松散的地面环境中的车轮的可牵引性。