Research on Failure Characteristics of Concrete Three-Point Bending Beams with Preexisting Cracks in Different Positions Based on Numerical Simulation

Table 1

Physical and mechanical parameters of concrete three-point bending beam.

Parameter	Concrete three-point bending beam
Homogeneity index (m)	5
Uniaxial compressive strength (MPa)	79.56
Young’s modulus (MPa)	30170
Poisson’s ratio	0.2
Density (kg/m^3)	2450
Friction angle (°)	47