Yield Surface

This command sets the yield surface variable ys to be the specified type. Currently these include: Drucker-Prager yield surface, Rounded Mohr-Coulomb (Willam-Warnke) yield surface, von Mises yield surface, Cam-Clay yield surface and Leon yield surface.

set ys "-YieldSurfaceType <parameter list>"

Valid strings for YieldSurfaceType are DP, VM and CC.

For Drucker-Prager yield surface

set ys "-DP"

For von Mises yield surface

set ys "-VM"

For rounded Mohr-Coulomb (Willam-Warnke) yield surface

set ys "-RMC01"

For Cam-Clay yield surface

set ys "-CC $M"

$M	Slope of the critical state line in p-q space

For Leon yield surface

set ys "-Leon $fc $ft $e $c"

$fc	compressive strength
$ft	tensile strength
$e	excentricity of yield surface (usually 0.6-0.7)
$c	cohesion