Command manual

Command list

MAT_HOEK_BROWN

Material properties
Attention: This command is in the beta stage and the format may change over time.
*MAT_HOEK_BROWN
"Optional title"
mid, $\rho$, $E$, $\nu$
$\sigma_{ci}$, $m_i$, $GSI$, $D$, $\psi_{max}$, $\sigma_{\psi}$

Parameter definition

VariableDescription
mid Unique material identification number
$\rho$ Density
$E$ Young's modulus
$\nu$ Poisson's ratio
$\sigma_{ci}$ Uni-axial strength of intact rock
$m_i$ Intact rock parameter
$GSI$ Geological strength index
$D$ Disturbance factor
$\psi_{max}$ Dilatancy angle at $\sigma_3$ = 0
$\sigma_{\psi}$ Value of $-\sigma_3$ above which dilatancy is zero ($\psi=0$)

Description

Geological model for disturbed and undisturbed rock.