模拟月壤地面力学性质试验研究

发布时间：2018-05-15 11:04

本文选题：月面车辆力学 + 模拟月壤　；参考：《岩土力学》2011年04期

【摘要】：掌握与月球车行驶相关的月壤力学性质是我国月球车研制所急需的。在制备了用于月面车辆力学试验用的模拟月壤基础上,通过三轴试验得出模拟月壤的弹性模量为48.8 MPa;通过硬度测量可知,模拟月壤的硬度小于黑壤土,与石英砂接近;通过压板试验可得模拟月壤的变形指数n为1.13,变形模量K为1 056 kN/mn+2,分析可知,随着变形模量和变形指数的增大,其承压能力增大;通过履带板试验可得模拟月壤剪切变形模量k为1.2 cm,分析可知,剪切破坏模量的增大对剪切强度的影响不大,但会使剪切破坏的峰值向后移动;另外,随着内摩擦角Φ和黏聚力c的增加,剪切破坏强度增大。以上研究结果可为月球车行走机构优化设计和通过性能评估提供参考和依据。
[Abstract]:It is urgent to grasp the mechanical properties of lunar soil related to the lunar rover in China. Based on the preparation of lunar soil for lunar vehicle mechanical test, the elastic modulus of the simulated lunar soil is 48.8 MPA by triaxial test, and the hardness of the simulated lunar soil is smaller than that of black loam, which is close to that of quartz sand. The deformation index n is 1.13 and the deformation modulus K is 1 056 kN/mn 2. The compression capacity increases with the increase of deformation modulus and deformation index. The shear deformation modulus k of lunar soil is 1.2 cm through track test. The analysis shows that the increase of shear failure modulus has little effect on shear strength, but it will cause the peak value of shear failure to move backward. With the increase of internal friction angle 桅 and cohesion c, the shear failure strength increases. The above results can provide reference and basis for the optimal design and performance evaluation of lunar rover walking mechanism.
【作者单位】：吉林大学工程仿生教育部重点实验室;清华大学汽车安全与节能国家重点试验室;
【基金】：国家自然基金资助项目(No.50875107) 中国博士后科学基金会资助项目(No.20080440038) 国家高技术研究发展计划(863)资助项目(No.2010AA101401) 吉林大学基本科研业务费课题(No.Z201102)
【分类号】：P184.5

【共引文献】