Study on the Pressure-sinkage Characteristics of Simulated Lunar Soil
The study focused on analyzing the pressure-sinkage characteristics of lunar soil simulant. The basic material of lunar soil simulant was volcanic eruption, the physical and mechanical properties of it were close to lunar soil. Bernstein model was selected to describe the pressure-sinkage characteristics of the lunar soil simulant under the rigid wheel, and the parameters were fitted based on the measured data from soil bin tests. Then the comparison between results of computation by the selected model and simulation by Distinct Element Method (DEM) under the moon gravity were made. From the lunar rover walking characteristics, the parameters of Bernstein model were modified so as to describe the pressure-sinkage characteristic of lunar soil under an inclined concentrated force. Finally, the parameters of terra-mechanics were calculated, deformation modulus is 1910.28N/mm , and sinkage index is 1.07. These researches make a foundation for researching the interaction of lunar rover wheel and lunar soil and developing the lunar rover with high traffic ability.
Pressure-sinkage characteristics Bernstein model Simulation Distinct element method Lunar soil simulant Lunar rover
Chen Bin Li Jianqiao Zhang Rui Li Yinwu Zou Meng
Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130025 Chi National Key Lab of Automobile Safety and Energy Economy, Tsinghua University, Beijing, 100084 China
国际会议
沈阳
英文
428-433
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）