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Table 3 Mechanical and thermal parameters for validation

From: A novel thermo-mechanical coupling approach for thermal fracturing of rocks in the three-dimensional FDEM

  Outer cylinder: concrete Inner cylinder: steel
Geometry
Radius (m) \(b = 0.15\) \(a = 0.03\)
Height, h (m) 0.01 0.01
Mechanical
Young’s modulus, E (GPa) 20 40
Poisson’s ratio, \(\nu \) 0.2 0.3
Density, \(\rho \) (kg/m\(^3\)) 2300 2300
Internal cohesion (MPa) 20 20
Tensile strength (MPa) 10 20
Fracture penalty number (GPa) \(4.10^3\) \(4.10^3\)
Contact penalty number (GPa) 40 40
Fracture normal energy release rate (J/m\(^2\)) 50 100
Fracture shear energy release rate (J/m\(^2\)) 100 100
Internal friction angle (\( ^\circ \)) 30 30
Thermal
Thermal expansion coefficient, \(\alpha \) (\(/ ^\circ \hbox {C}\)) \(7.0 \times 10^{-6}\) \(2.2 \times 10^{-5}\)
Initial temperature, \(T_0\) (\(\ ^\circ \hbox {C}\)) 0  
Temperature increase, \(\Delta _T\) (\(\,{}^{\circ } \hbox {C}\)) 100