ParabolicCC

Parabolic Hardening Modified Cam-Clay Model

Theory

This model defines a parabolic hardening rule for $a(\alpha)$, which is a non-negative function.

$$a(\alpha)=a_0+H\alpha^2\ge0,$$

in which $H$ is the hardening modulus, note $\alpha=\varepsilon_p=\varepsilon_1+\varepsilon_2+\varepsilon_3$ is the volumetric plastic strain.

The hardening modulus could be either positive or negative.

This hardening rule does not imply any physical soil behavior.

Syntax

material ParabolicCC (1) (2) (3) (4) (5) (6) (7) (8) [9]
# (1) int, unique material tag
# (2) double, elastic modulus
# (3) double, poissons ratio
# (4) double, beta, controls compression side shape
# (5) double, m, slope of CSL
# (6) double, p_t, initial tension strength
# (7) double, a_0, initial a_0
# (8) double, H, slope of hardening function
# [9] double, density, default: 0.0