Material - Hyperbolic Duncan-Chang
Parameters Initial Loading Modulus (K) Inpute Initial Loading modulus from initial tangent gradient obtained from experiment data. Exponent (n) The gradient is n can be obtained by referring to E/Pa along the vertical axis. Please refer to Analysis Manual Part 3 "Constitutive Model." Failure Ratio (Rf) Failure ratio generally used 0.8~1.0 Kur Generally use three times of Initial Loading modulus. If this option is not checked, solver automatically uses Initial Loading Modulus Kb The Poisson's ratio is dependent on the bulk modulus parameter Kb. If this not selected, the solver will automatically use Poisson’s ratio. To calculate the bulk modulus please refer to Section 3.7 in Analysis Manual "Part 2 - Constitutive Model" Exponent (m) Poisson’s ratio is dependent on the Min. Tangential Modulus m . The gradient is m can be obtained by referring to Bm/Pa along the vertical axis. Min. Confining Stress (σmin) This value is used to limit the confining value calculated in solver. If the confining value, calculated in solver, is small the results will not reflect true behavior. Recommended value : 1/100 of compressive strength. Atmospheric Pressure (Pa) The atmospheric pressure is used to normalize the units. *Please refer to Analysis Manual for detail description of each material parameters.

Material - Hyperbolic Duncan-Chang

Parameters

Initial Loading Modulus (K)

Inpute Initial Loading modulus from initial tangent gradient obtained from experiment data.

Exponent (n)

The gradient is n can be obtained by referring to E/Pa along the vertical axis. Please refer to Analysis Manual Part 3 "Constitutive Model."

Failure Ratio (Rf)

Failure ratio generally used 0.8~1.0

Kur

Generally use three times of Initial Loading modulus. If this option is not checked, solver automatically uses Initial Loading Modulus

The Poisson's ratio is dependent on the bulk modulus parameter Kb.

If this not selected, the solver will automatically use Poisson’s ratio. To calculate the bulk modulus please refer to Section 3.7 in Analysis Manual "Part 2 - Constitutive Model"

Exponent (m)

Poisson’s ratio is dependent on the Min. Tangential Modulus m . The gradient is m can be obtained by referring to Bm/Pa along the vertical axis.

Min. Confining Stress (σmin)

This value is used to limit the confining value calculated in solver. If the confining value, calculated in solver, is small the results will not reflect true behavior.

Recommended value : 1/100 of compressive strength.

Atmospheric Pressure (Pa)

The atmospheric pressure is used to normalize the units.

*Please refer to Analysis Manual for detail description of each material parameters.