Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB

Table 5

Comparison of the peak stress and the corresponding dynamic strain values between prismatic and cylindrical specimens under approximately equal strain rates.

Specimen	/s^−1	Stress/MPa	Stress deviation	Strain (%)	Strain deviation
C1	36	145.16	2.45%	0.29%	6.29%
R1	34	148.72		0.30%
C2	54	183.40	3.76%	0.39%	2.85%
R2	49	176.50		0.38%
C3	91	222.47	3.57%	0.60%	8.82%
R3	94	214.53		0.55%