/ANIM/SHELL/Restype

Engine Keyword Generates animation files containing shell element data for the specified result. Options used for SHELL type of element.

Format

/ANIM/Eltyp/Restype/Keyword4

Definition

Field	Contents	SI Unit Example
`Eltyp`	Element type. ELEM SHELL Shell elements
`Restype`	AMS Elements using AMS timestep due to /DT/CST_AMS. DAM1, DAM2 or DAM3 Damage in direction 1, 2 or 3 6 7 /DAMG/Keyword4 Damage value (only for coupled damage model). 11 Keyword4 = MEAN (Default) Mean damage over thickness integration points. Keyword4 = i Damage at the i^th integration point in the thickness. Keyword4 = UPPER Damage at upper integration point in the thickness. Keyword4 = LOWER Damage at lower integration point in the thickness. Keyword4 = MEMB Damage at the membrane. DENS Density DT Element time step. 10 EINT Element internal energy. ENER Specific energy (internal energy divided by the element mass). EPSD Equivalent strain rate in bricks and also in shells (only available in case of strain rate filtering). EPSP Plastic strain $ε_{p}$ . ERROR/THICK Estimated error on 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). HOURG Hourglass energy per mass unit /NL_EPSD/Keyword4 Non-local plastic strain rate (only if /NONLOCAL/MAT is activated). 12 Keyword4 = i Non-local plastic strain rate at the i^th integration point in thickness. Keyword4 = UPPER Non-local plastic strain rate at upper integration point in thickness. Keyword4 = LOWER Non-local plastic strain rate at lower integration point in thickness. Keyword4 = ALL Non-local plastic strain rate at all integration points. /NL_EPSP/Keyword4 Non-local plastic strain (only if /NONLOCAL/MAT is activated). 12 Keyword4 = i Non-local plastic strain at the i^th integration point in thickness. Keyword4 = UPPER Non-local plastic strain at upper integration point in thickness. Keyword4 = LOWER Non-local plastic strain at lower integration point in thickness. Keyword4 = ALL Non-local plastic strain at all integration points. 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. P Pressure 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. PLY If the plyxfem option is activated, each layer is modeled as a shell element. 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 TSAIWU/Keyword4 Tsai Wu criterion for /MAT/LAW15 (CHANG) and /MAT/LAW25 (COMPSH). Keyword4 = ALL Tsai Wu criterion of all integration points. Keyword4 = LOWER Tsai Wu criterion at lower integration point. Keyword4 = UPPER Tsai Wu criterion at upper integration point. USRi Variable of user law ( $i$ =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. VONM von Mises stress /WPLA/Keyword4 Plastic work for /MAT/LAW15 (CHANG) and /MAT/LAW25 (COMPSH). Keyword4 = ALL Plastic work of all integration points. Keyword4 = UPPER Plastic work at upper integration point. Keyword4 = LOW ER Plastic work at lower integration point.

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)
$T H I N = (- 1) \cdot 100 \cdot \frac{T h i c k n e s s - T h i c k n e s s_{i n i t i a l}}{T h i c k n e s s_{i n i t a l}}$
With ERROR/THICK, an estimated error on shells and 3-node shells thickness is computed as:
- Nodal thickness is computed as:(2)
  $\bar{t} = \frac{\sum_{k} A (E_{k} (n)) \cdot t (E_{k} (n))}{\sum_{k} A (E_{k} (n))}$
  
  Where, $A (E_{k} (n))$ and $t (E_{k} (n))$ are the area and thickness of element $E_{k} (n)$ containing node $n$ .
  
  Then the thickness error is evaluated for each element $E$ , using the formula:(3)
  $e_{t} = \frac{1}{A_{E}} \int_{A_{E}} | \frac{t - \bar{t}}{t} |$
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 all integration points (through all layers).
The option PLY is only available for SHELL. In this case, composite shells are modeled according to the plyxfem formulation or modeled with one shell/ply. Each generated shell is offset from the original shell in 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 is only displayed in the animation if Radioss has computed an elementary time step this element. If nodal time step is used (for example, /DT/NODA), element time step is not displayed in the animation.
Option DAMG is only used with coupled damage models (/MAT/LAW72 or /FAIL/GURSON) to output damage over integration points. The damage variable is normalized by its critical value.
- For /MAT/LAW72(4)
  $D_{m g} = \frac{D}{D_{C}}$
- For /FAIL/GURSON(5)
  $D_{m g} = \frac{f_{t}}{f_{F}}$
If /NONLOCAL/MAT option is activated, it is possible to output the regularized non-local plastic strain and its rate.
In cases where /ANIM/SHELL is used to output data on QUAD elements, /ANIM/SHELL/EPSP can be used to plot plastic work for composite material laws (/MAT/LAW15 and /MAT/LAW25), or plastic strain for all other elastoplastic material laws.