模拟月壤地面力学性质试验研究  

Experimental study of terra-mechanics characters of simulant lunar soil

作　　者：邹猛[1] 李建桥[1] 刘国敏[1] 张金换[2] 李因武[1] 

机构地区：[1]吉林大学工程仿生教育部重点实验室,长春130022 [2]清华大学汽车安全与节能国家重点试验室,北京100084

出　　处：《岩土力学》2011年第4期1057-1061,共5页Rock and Soil Mechanics

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)

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。It is important to know the terra-mechanics characters of lunar soil for designing reasonable wheels and running gear of the lunar rover. The simulant lunar soil is prepared firstly, and it could be used for the basic test of the terra-mechanics on moon. The elastic modulus is 48.8 MPa from the triaxial tests by calculation. The hardness of simulant lunar soil is tested by penetrometer; and the results show that it is less than that of the black soil and close to that of the sand. Using the plate-sinkage-test to measure the vertical strength of lunar soil, the n （sinkage exponent） is 1.13, K （modulus of deformation） is 1 056 kN/mn＋2 by calculation; and the vertical strength of simulant lunar soil is increased with the increase of the n and K by analyzing. The horizontal shear strength can be measured by means of a shear-test, and k （shearing strength displacement modulus） is 1.2 cm by calculation. The k has little influence on the shear strength; but its peak will move backward; and the shear strength is increased with the increase of the internal friction angle and cohesion. The results can supply the reference to evaluate the traffic ability of the lunar rover.

关 键 词：月面车辆力学 模拟月壤 通过性 

分 类 号：TU411[建筑科学—岩土工程] P184[建筑科学—土工工程]