Civil Engineering Reference
In-Depth Information
dq3
plastic potential derivative,
∂Q/∂J
3
dsbar
invariant,
σ
critical viscoplastic time step (set initially to 10
15
)
dt
set to 3
.
0
d3
0
f
value of yield function
load theta
Lode angle,
set to 4
.
d4
θ
set to 1
.
0
one
ptot
holds running total of applied pressure
sigm
mean stress,
σ
m
tol
plastic convergence tolerance
two
set to 2
.
0
set to 0
.
0
zero
Scalar character:
element
element type
Scalar logical:
converged
set to
.TRUE.
if plastic iterations have converged
Dynamic integer arrays:
etype
element property type vector
element steering vector
g
global element steering matrix
g g
global element node numbers matrix
g num
diagonal term location vector
kdiag
nodal freedom matrix
nf
loaded nodes vector
node
element node numbers vector
num
Dynamic real arrays:
bdylds
self-equilibrating global body loads
bee
strain-displacement matrix
self-equilibrating element body loads
bload
element nodal coordinates
coord
stress-strain matrix
dee
shape function derivatives with respect to local coordinates
der
shape function derivatives with respect to global coordinates
deriv
product [
D
e
]
vp
devp
element nodal displacements
eld
integrating point contribution to
bload
eload
strain terms
eps
viscoplastic strain rate,
˙
vp
erate
viscoplastic strain rate increment,
δ
vp
evp
holds running total of viscoplastic strains,
vp
evpt
holds
{
∂Q/∂
σ
}
flow
