Engine Keyword Generates animation files containing shell
element data for the specified result. Options used for SHELL type of element.
Format
/ANIM/Eltyp/Restype
Definitions
Field |
Contents |
SI Unit Example |
Eltyp |
Element type.
- ELEM
- SHELL
- Shell elements
|
|
Restype |
- AMS
- Elements using AMS timestep due to /DT/CST_AMS.
- DENS
- Density
- DT
- Element time step. 10
- EINT
- Element internal energy.
- ENER
- Specific energy (internal energy divided by the element
mass).
- EPSP
- Plastic strain
.
- EPSD
- Equivalent strain rate in bricks and also in shells
(only available in case of strain rate filtering).
- HOURG
- Hourglass energy
- P
- Pressure
- VONM
- von Mises stress
- SIGEQ
- Equivalent stress, based on the yield criteria used for
the corresponding material. 4
- SIGX
- Stress XX 8
9
- SIGY
- Stress YY
- SIGZ
- Stress ZZ
- SIGXY
- Shear stress XY
- SIGYZ
- Shear stress YZ
- SIGZX
- Shear stress ZX
- TEMP
- Temperature
- THIC
- Thickness
- THIN
- % thinning of shell
- ERROR/THICK
- Estimated error on shell thickness
- PLY
- .
- If the plyxfem option is activated, each layer is
modeled as a shell element.
- PHI/N or PHI/ALL
- Angle between element skew and direction 1 of
orthotropy. PHI is only valid for /PROP/TYPE11 (SH_SANDW) and
/PROP/TYPE16 (SH_FABR).
- = N
- Output angle in integration point
N (through shell thickness.
- = ALL
- Output angle in all integration points through
shell thickness.
- FAIL
- Number of failed layers for /PROP/TYPE10 (SH_COMP), /PROP/TYPE11 (SH_SANDW), /PROP/TYPE17 (STACK), /PROP/TYPE51, PCOMPP, /MAT/LAW15 (CHANG) and /MAT/LAW25 (COMPSH).
- For the other property sets and material laws the values
are:
- = 0
- If the element is not broken.
- = 1
- If the element is broken (only available in
case shell element:
/ANIM/SHELL/FAIL).
- DAM1, DAM2 or
DAM3
- Damage in direction 1, 2 or 3
- USRi
- Variable of user law (
=1 to 18).
- USRII or USRII/JJ
- Variable of user law on each integration points (II =1
to 99 number of the variable, JJ =1 to 99 number of
layer). 1
Tip: Since
the number of user variables that can be output is
limited, use /H3D/SHELL/USER/
instead.
- OFF
- Element status.
- Where,
- = -1
- Element is not active (it is defined in an
activated rigid body).
- = 0
- Deleted element.
- Between 0 and
1
- Under failure process.
- = 1
- Active element.
- /WPLA/Keyword
- Plastic work for /MAT/LAW15 (CHANG)
and /MAT/LAW25 (COMPSH).
- Keyword = ALL
- Plastic work of all integration points.
- Keyword = UPPER
- Plastic work at upper integration point.
- Keyword = LOWER
- Plastic work at lower integration point.
- /DAMG/Keyword
- Damage value (only for /FAIL/GURSON).
11
- Keyword = MEAN
- Mean damage over thickness integration
points.
- Keyword = i
- Damage at the ith integration point
though thickness.
- Keyword = UPPER
- Damage at upper integration point though
thickness.
- Keyword = LOWER
- Damage at lower integration point though
thickness.
- Keyword = MEMB
- Damage at the membrane.
|
|
Comments
- User variables USRII are available for shell and brick
elements, but USRII/JJ is only available for shell elements. When
an integration point is not explicitly described, returned integration point means
the integration point is superior; computed as [(number of integration points in
thickness + 1) / 2]. The result is then rounded up to the superior value.
- Example:
For two integration points in thickness, second integration point
from bottom (top of thickness) is returned.
For three integration
points in thickness, second integration point from bottom (middle one)
is returned.
For four integration points in thickness, third
integration point from bottom is returned.
- THIN is computed as: (1)
- With ERROR/THICK, an estimated error on shells and 3-node
shells thickness is computed as:
- Nodal thickness is computed as:(2)
Where,
and
are the area and thickness of element
containing node
.
Then the thickness error is
evaluated for each element
, using the formula:
(3)
- The option
SIGEQ is available for SHELL and BRICK (refer to
/ANIM/BRICK/SIGEQ). Each material law, in Radioss has its own yield criterion to calculate the
equivalent stress. For some it is von Mises; for others, it is Hill or Barlat or
something else. For any non-von Mises criterion, the corresponded equivalent stress
(or criterion) is computed within all the integration points of the element.
Therefore, the output field /ANIM/SHELL/SIGEQ is computed as a
mean value over the all integration points (through all layers).
- The option
PLY is only available for SHELL. In this case, composite shells
using the plyxfem formulation or modeled with one shell/ply. Each
created shell is offset from the original shell to its true position.
Note: The size of the animation files may be highly
increased.
- For shell and 3-node shell elements, /ANIM/ELEM/DAM1,
DAM2, and DAM3, are available for Material
LAW15 and LAW25. These values are the principal values of the damage (values in the
local orthotropic skew).
- The "SPH outputs" are available with /ANIM/Eltyp =
ELEM/Restype (all
Restype values; except Restype =
THIC or HOURG). The Restype
values: DAM1, DAM2 or DAM3 are only available with material LAW24 for brick
element.
- The option
/ANIM/ELEM/SIGX is only applied for shell elements. For brick
elements, /ANIM/BRICK/TENS must be used.
- In
/ANIM/ELEM/SIGX and /ANIM/ELEM/SIGY, shell
stress is located on the center of the element.
- Element time step shows in animation
only if elementary time step is computed for this element by Radioss. If nodal time step used
(/DT/NODA) in computation, then no element time step
shows in animation.
- Option
DAMG only used with /FAIL/GURSON to
output damage value (ratio of total void volume fraction in current to it at
ductile failure).(4)