Direct Shear Tests on JSC-1A Lunar Regolith Simulant

作者：Iai Masafumi; Luna Ronaldo^*

来源：Journal of Aerospace Engineering, 2011, 24(4): 433-441.

DOI：10.1061/(ASCE)AS.1943-5525.0000082

• Lunar regolith simulant
• Direct shear test
• Internal friction angle
• Dilatancy

A series of direct shear tests were conducted on the JSC-1A lunar regolith simulant in a 101.6-mm- (4-in.-) diameter container. The direct shear test provides a unique mode of failure that aids the development of excavation tools for the Moon. Relative density and normal load were varied to study the strength behavior of such granular material at peak and critical state conditions. The values of the internal friction angle ranged from 30 to 70 degrees. A relationship between the internal friction angle of the direct shear and the published triaxial compression test results is presented. Additionally, the measured dilatancy angle is related to the difference in peak and critical state stress friction angles. DOI: 10.1061/(ASCE)AS.1943-5525.0000082.

• 出版日期2011-10