mcc_matrix_elastoplastic: Generate MCC elasto-plastic matrix elements

In GJMeijer/soilmech: R functions and plots for Soil Mechanics teaching

Generate MCC elasto-plastic matrix elements

Description

Returns the matrix elements of the elasto-plastic stiffness matrix according to the modified cam-clay model, in terms of isotropic and deviatoric stress invariants p and q, and volumetric and deviatoric strain invariants epsv and epq (epsv is assumed positive in compression)

dp = M11*depsv + M12*depsq dq = M21*depsv + M22*depsq

Usage

mcc_matrix_elastoplastic(p, q, pc, v0, M, kappa, lambda, nu)

Arguments

p, q	current stress invariants
pc	current preconsolidation pressure
v0	initial specific volume
M	M-parameter
kappa, lambda	MCC compression parameters
nu	Poisson's ratio

Value

array with four stiffness elements [M11, M12, M21, M22]

GJMeijer/soilmech documentation built on May 22, 2022, 10:39 a.m.