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Table 2 Mechanical parameters of contact interface under different bonding states

From: Damage evolution of bi-body model composed of weakly cemented soft rock and coal considering different interface effect

Contact state

Normal stiffness (GPa m−1)

Tangential stiffness (GPa m−1)

Cohesion (MPa)

Friction angle (°)

Strong

100

100

100

40

Weak

10

10

1

40

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