A Piezoelectric-Driven Rock-Drilling Device for Extraterrestrial Subsurface Exploration

Table 3

Plastic dynamics parameters of granite.

Parameter	Density	Elasticity modulus	Poisson ratio	Yield strength	Failure strain
Value	2600 kg/m^3	0.55×10^11 Pa	0.27	1.17×10^11 Pa	0.06