The file names for the material tests are 10 characters long and begin with the letter m, for material.
The next two characters are an abbreviation that refers to the material model being tested.
Material model abbreviation (second and third characters):
el Elasticity
pe Porous elasticity
ho Hypoelasticity
he Hyperelasticity with polynomial strain energy function
hr Hyperelasticity with reduced polynomial strain energy function
hn Hyperelasticity with neo-Hookean strain energy function
hm Hyperelasticity with Mooney-Rivlin strain energy function
hy Hyperelasticity with Yeoh strain energy function
hg Hyperelasticity with Ogden strain energy function
ha Hyperelasticity with Arruda-Boyce strain energy function
hv Hyperelasticity with Van der Waals strain energy function
hf Hyperfoam
pl Mises plasticity
pp Hill plasticity
pr Rate-dependent Mises plasticity
px Rate-dependent Hill plasticity
df Deformation plasticity
cr Mises creep
cp Hill creep
sw Swelling
de Drucker-Prager plasticity with linear elasticity
dp Drucker-Prager plasticity with porous elasticity
dr Rate-dependent Drucker-Prager plasticity
ca Cap plasticity
ce Clay plasticity with linear elasticity and tabulated hardening
cl Clay plasticity with porous elasticity
fe Crushable foam plasticity
fr Rate-dependent crushable foam plasticity
mc Mises creep and plasticity (coupled)
dc Drucker-Prager creep and plasticity (coupled)
cc Cap creep and plasticity (coupled)
co Concrete
mo Mohr-Coulomb plasticity
vl Viscoelasticity with elasticity, time domain
ve Viscoelasticity with elasticity, frequency domain
vh Viscoelasticity with hyperelasticity, time domain
va Viscoelasticity with Arruda-Boyce hyperelasticity, time domain
vv Viscoelasticity with Van der Waals hyperelasticity, time domain
vf Viscoelasticity with hyperfoam, time domain
vc Viscoelasticity with hyperelasticity, time domain, coupled temperature-displacement
vx Viscoelasticity with Arruda-Boyce hyperelasticity, frequency domain
vy Viscoelasticity with hyperelasticity, frequency domain
vz Viscoelasticity with Van der Waals hyperelasticity, frequency domain
hl Adiabatic Mises plasticity
hr Adiabatic rate-dependent Mises plasticity
cd Conductivity
cs Conductivity and specific heat
hg Heat generation
da Damping
fr Friction
gc Gap conductance
fh Hydrostatic fluid
gr Porous plasticity (Gurson's) model
gt Porous plasticity (Gurson's) model, coupled temperature-displacement
ci Cast iron plasticity model
ct Cast iron plasticity model, coupled temperature-displacement
bb Bergström-Boyce hysteresis for elastomers
an Annealing
tv Two-layer viscoplasticity
me Mullin's effect in elastomers
The fourth and fifth characters are an abbreviation referring to the options used within the material model.
Material model option abbreviation (fourth and fifth characters):
oo No options used (or default)
is Isotropic
or Orthotropic
an Anisotropic
ec Engineering constants elasticity
td Test data, compressible hyperelasticity (or hyperfoam)
tb Test data, hyperelasticity, Van der Waals, 
=constant
cd Coefficients, compressible hyperelasticity (or hyperfoam)
co Coefficients, incompressible hyperelasticity
sp Poisson's ratio, porous elasticity
ih Isotropic hardening plasticity
kh Kinematic hardening plasticity
tm Time creep law
st Strain creep law
hy Hyperbolic creep law
sm Singh-Mitchell creep law
uc User creep model
ko Third invariant dependence (Drucker-Prager, Cam-clay, foam plasticity, cap plasticity)
kt Third invariant dependence with tabulated material data
ot Tabulated material data
pr *PLASTIC with RATE option
yr *DRUCKER PRAGER HARDENING with RATE option
ys Rate dependence with yield stress ratios
oi Cam-clay without third invariant, with intercept option
ob Capped Cam-clay without third invariant
kb Capped Cam-clay with third invariant
u0 Constant fracture energy concrete cracking
cm Composite damping
gc Gap clearance dependent
gp Gap pressure dependent
mf Mass flow rate-dependent
hi Incompressible hydraulic fluid
hn Nearly incompressible hydraulic fluid
pn Pneumatic fluid
ff *VISCOELASTIC, FREQUENCY=FORMULA option
fn *VISCOELASTIC, FREQUENCY=FORMULA option, without frequency dependence
ft *VISCOELASTIC, FREQUENCY=TABULAR option
on Gurson's model (default), nucleation of voids
qo Modified Gurson's model, no nucleation of voids (default)
qn Modified Gurson's model, nucleation of voids
do *DRUCKER PRAGER with linear criterion
ho *DRUCKER PRAGER with hyperbolic criterion
eo *DRUCKER PRAGER with exponent criterion
et *DRUCKER PRAGER with exponent criterion and test data
ch Combined kinematic/isotropic hardening
nc *NO COMPRESSION option
nt *NO TENSION option
mp *MASS with mass proportional damping
vp *VISCOUS option with the *POTENTIAL option
The sixth character indicates which dependencies are included in the material properties (for example, temperature dependence).
Code for dependencies included (sixth character):
o No dependency
t Temperature dependency
d Predefined field variable dependency
b Temperature and predefined field variable dependency
s Strain rate dependence
i Dependence on initial conditions for hardening variables
The seventh character represents the dimension of the stress space being tested (this is a function of the finite element being used), except in the case of hydrostatic fluids, where “1” is used to indicate the fluid pressure as the single direct stress component.
Code for stress space (seventh character):
1 One direct stress component (NDI=1)
2 Two direct stress components (NDI=2)
3 Three direct stress components (NDI=3)
The eighth character is a letter between a and z that is inserted to make the first eight characters of the file name unique. The ninth and tenth characters are an abbreviation of the stress/strain path in which the material model is being exercised. There is always a one-to-one correspondence between the eighth character (used for uniqueness of file names) and the last two characters representing the stress/strain path.
Stress/strain path abbreviation (eighth, ninth, and tenth characters):
ahc Hydrostatic compression
bus Uniaxial strain
ctc Triaxial compression
dte Triaxial extension
euc Uniaxial compression
eis Extension, inflation, and shear
eit Extension, inflation, and torsion
fbc Biaxial compression
gsh Shear
hut Uniaxial tension
ibt Biaxial tension
jht Hydrostatic tension
kct Compression tension
ltr Triaxial stress
mcy Cyclic loading
nt1 Uniaxial tension in direction 1
ot2 Uniaxial tension in direction 2
pt3 Uniaxial tension in direction 3
qcr Creep in uniaxial tension
rcy Cyclic loading with relaxation
rre Relaxation in uniaxial tension
ruc Relaxation in uniaxial compression
spt Pure torsion
srs Uniaxial tension, static and relaxation
the Harmonic excitation
ucs Cyclic shear
vlp Linear perturbation
xmx Multiaxial stress
yfr Frequency
ydy Dynamic
tua Uniaxial tension, unloading, annealing, and reloading
cut Cyclic uniaxial tension
ctu Cyclic triaxial tesion followed by uniaxial tension
cpt Cyclic planar tension
cbt Cyclic biaxial tension
In the case of interface property models, the last three characters indicate the interface element type used in the input file.
Interface element type (eighth, ninth, and tenth characters):
din Diffusion interface element
ctu Contact element for small relative sliding between coupled temperature-displacement elements