Experimental on mechanical properties of simulated Mars soil crust and its crusting
Except the loose soil on the surface of Mars,there is a kind of special type of soil names Crusty-cloddy,where the ground surface is brittleness and the underlying is loose sand.That is deceptive for Mars Rover.This article take theMars-1and Mars-3 simulant Mars soil as the raw material,to formed hard-shell structures under the nature dry,then studied on the mechanics of these crust,the results showed that the crust of fine particles Mars-1 soil is best when the liquor is saturated NaCl,which has the biggest area,strongly integrity and small thickness;while the Mars-3 crusted the best when liquor is 10％MgSO4,which has a small area,large thickness but weak integrity.The crusting velocity of Mars-1 is faster than that of Mars-3.Concerning about loading properties,the peak broken force for crust of Mars-1 decreased with the increasing of the concentration of NaCl but increased with the increasing of the concentration of MgSO4.Two kinds of crust have the biggest penetration resistance under the liquor of 10％NaCl.For Mars-1,the penetration resistance increases with the increasing of the concentration of NaCl but decreases with the increasing of the concentration of MgSO4.The above research can provide the reference and basis for the planet ramp mechanism optimization design and performance evaluation.
simulated mars soilhard-shell structureload-bearing propertiestrafficability
万方数据
维普
