Numerical Analysis of Fracture Behaviour on Marble Samples Containing Two Flaws

Table 5

The microcrack distribution at failure of all models.

Failure mode	Microcrack coalescence mode	Flaws parameter (co/non-α-β-D)	Microcrack distribution at failure
Tensile failure	Tensile crack coalescence	Co-0°-0°-10 mm; Co-15°-15°-10 mm; Co-30°-30°-10 mm; Co-45°-45°-15 mm
	Tensile crack coalescence	Non-45°-0°-10 mm; Non-45°-0°-15 mm; Non-45°-0°-20 mm; Non-45°-15°-15 mm
Shear failure	Shear crack coalescence	Co-45°-45°-5 mm; Co-45°-45°-10 mm; Co-60°-60°-10 mm
	Shear crack coalescence	Non-45°-60°-10 mm; Non-45°-60°-15 mm; Non-45°-60°-20 mm; Non-45°-90°-10 mm; Non-45°-90°-15 mm
Mix tensile and shear failure	Mix tensile and shear crack coalescence	Co-45°-45°-20 mm; Co-45°-45°-30 mm
	Mix tensile and shear crack coalescence	Non-45°-15°-10 mm; Non-45°-30°-10 mm; Non-45°-30°-15 mm; Non-45°-30°-20 mm; Non-45°-90°-20 mm; Non-45°-120°-10 mm
Split fracture	No coalescence	Co-75°-75°-10 mm; Co-90°-90°-10 mm
	No coalescence	Non-45°-15°-20 mm; Non-45°-120°-15 mm; Non-45°-120°-20 mm