The PolyUMod Material Database is a set of pre-calibrated material models. The already calibrated material models are intended to be used as ‘generic’ models for specific polymers, instead of using, for example, the elastic modulus and Poisson’s ratio from a specification sheet. This means that the behavior of the library model will likely not be an exact match for the behavior of your material due to variability in additives and processing conditions. However, the models have been calibrated to extensive test data and should provide significantly more accurate results than a model based on manufacturer data sheets.
The PolyUMod Material Database is a set of pre-calibrated material models for common rubbers and plastics. The database is included with all PolyUMod licenses, and can be used with Abaqus, Ansys Mechanical, LS-DYNA, COMSOL Multiphysics, Altair Radioss, and MSC. Marc.
All material models in the database are strain-rate dependent viscoplastic models that require non-linear geometry (large deformations) to be activated in the FE simulation.
Available Models
The PolyUMod Material Database contains the following pre-calibrated material models:
polyamide (nylon) 66, 30% glass fiber filled, anitropic, fibers aligned in the 2-direction
2013
68
GF PEI
polyetherimide, 30% glass fiber filled, anisotropic, fibers aligned in the 1-direction
2011
68
HDPE
high density polyethylene
2003
23
LLDPE
linear low density polyethylene, recommended JAC=3
2022
43
PTFE
polytetrafluoroethylene
2001
23
PA 66
polyamide (nylon) 66
2012
23
PC
polycarbonate
2014
23
PEEK
polyether ether ketone, all strain rates
2016
23
PEEK
polyether ether ketone, low strain rates
2015
23
PEEK
polyether ether ketone, different temperatures
2017
23
PEI
polyetherimide, all strain rates
2010
23
PEI
polyetherimide, low strain rates
2009
23
PET
polyethylene terephthalate
2002
13
PLLA
poly-L-lactide, anisotropic, stiffest in the 1-direction
2018
68
PP
polypropylene, recommended JAC=3
2020
43
Silicone
silicone rubber, shore 55A, recommend JAC=3
2018
43
Instructions
The database material models are specified using 5 parameters:
MM, the material ID
Units, the units system to use, see table below
ODE, ODE solver type. The default value is 0. For more information see the PolyUMod User’s Manual.
JAC. Jacobian solver type. The default value is 0. For more information see the PolyUMod User’s Manual.
TWOD_S. Plane stress flag. The default value is 0. For more information see the PolyUMod User’s Manual.
The material models are provided in the following unit systems.
Unit ID
Force Unit
Length Unit
Time Unit
Temperature Unit
1
N
m
s
K
2
N
mm
s
K
3
N
mm
ms
K
4
lbf
in
s
R
In addition, the material models also need the number of state variables that are listed in the table above. Note that LS-DYNA simulations require an additional 9 state variables than the values listed in the table.
The easiest way to setup and use the PolyUMod Material Database models is to use MCalibration. The following movie tutorial shows how.
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