# /H3D/SHELL

Engine Keyword Generate H3D contour output results for /SHELL and /SH3N shell elements.

## Format

/H3D/SHELL/`Keyword3`/`Keyword4`/`Keyword5`

#optional next line(s) that lists the parts to save results for.

`part_ID`_{1} ...
`part_ID`_{N}

## Example

```
/H3D/SHELL/TENS/STRESS/PLY=1/NPT=ALL
/H3D/SHELL/TENS/STRESS/NPT=ALL/PLY=1
```

`/H3D/SHELL/TENS/STRESS/NPT=ALL`

```
/H3D/SHELL/ENER
356 293
```

`/H3D/SHELL/USER/NPT=ALL/UVAR=12`

## Definitions

## Comments

- The syntax /H3D/ELEM/Keyword3/Keyword4/Keyword5 is also valid.
- When PART IDs are listed after the /H3D/SHELL line the specified results will only be output for those parts.
- Output can be a, scalar, vector,
or tensor as defined in the following tables.
Table 1. Scalar Output Keyword3 Keyword4 Description `ALPHA``PLY`=- I or ALL
`LAYER`=- I or ALL

Shear angle alpha of material /MAT/LAW58 in degrees. `AMS`Elements using `AMS`timestep due to /DT/CST_AMS.`BULK`Artificial Viscosity `DAM1`,`DAM2`,`DAM3`Principal damage values in local orthotropic skew direction 1, 2 or 3 for materials LAW15 and LAW25. `DAMA``MEMB``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

Maximum of damage over time of all /FAIL criteria acting on one material. Refer to the specific /FAIL law used for how damage is calculated. `DAMG``MEMB``NPT`=- I, ALL, LOWER or UPPER

Mean damage over thickness integration points (only for /FAIL/GURSON). 8 `DENS`Density `DOMAIN`SPMD domain number of an element. `DT`Element timestep `EINT`Element internal energy `ENER`Specific energy density (internal energy divided by the element mass) `EPSD`Equivalent strain rate `EPSP``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

Plastic strain `ERROR``THICK`Estimated error on shell thickness `FAIL``PLY`=- I or ALL

Number of failed layers for /PROP/TYPE10, /PROP/TYPE11, /PROP/TYPE17, /PROP/TYPE51, /PCOMPP, /MAT/LAW15 and /MAT/LAW25. For the other property sets and material laws the values are: no failure =0 and element failed =1. `FLDF``MEMB``LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

FLD damage factor indicator. 6 `FLDZ``MEMB``LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

FLD failure zone factor for the FLD failure model. 7 - = 1
- Loose metal
- = 2
- High wrinkle
- = 3
- Compression
- = 4
- Safe
- = 5
- Marginal
- = 6
- Failure

`HOURGLASS`Hourglass Energy `MASS`Element mass `MDS`Automatic selection of user variable to output according to MDS law that is used. (1 value per user variable and per ply in case of stack and ply)

`MDS``MDS_VAR`=- DEF or ALL
`PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

MDS user variables `NXTF``MEMB``LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

Instability factor of /FAIL/NXT failure model `OFF`Element status. Where the result output is:- = -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.

`PEXT`External pressure applied on shell element coming from /PLOAD, /LOAD/PFLUID, /LOAD/PBLAST or /LOAD/PRESSURE. `PHI``MEMB``PLY`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

Angle between the element system and direction 1 orthotropy `SIGEQ`Equivalent stress based on a material’s yield criteria. Some examples of yield criteria are von Mises, Hill or Barlat. `SIGX`,`SIGY`,`SIGZ`,`SIGXY`,`SIGYZ`,`SIGZX`Stress in specified direction `TDEL`Time at which element is deleted, due to failure defined using /FAIL criterion. Failure criteria built in materials is ignored. `TEMP`Temperature `THICK`Thickness `THIN`% thinning for shell. `USER``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER
`UVAR`=- I or ALL

User material (/MAT/USERij) law output for user-defined variable `i`. Also, requests USR output for some Radioss material laws such as LAW58. USR1 output is requested using`UVAR`=1.`VONM`von Mises stress at neutral fiber `WPLA``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

Plastic work for /MAT/LAW15 (CHANG) and /MAT/LAW25 (COMPSH) Table 2. Tensor Output Keyword3 Keyword4 Keyword5 Description `TENS``BSTRESS``ID`=- n or ALL
`MEMB``BEND``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I or ALL

Backstress tensor for material /MAT/LAW36 (n=1) and /MAT/LAW78 (n=1, 2 or 3) and /MAT/LAW87 (n=1, 2, 3 or 4). `ID`=-1 gives the sum of all backstress tensors available for the element.`EPSDOT``MEMB``BEND``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I or ALL

Strain rate tensor `STRAIN``MEMB``BEND``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I, ALL, LOWER or UPPER

Strain tensor `STRAIN_ENG`-- Infinitesimal total strain. Only one tensor per element. `STRESS``MEMB``BEND``PLY`=- I or ALL
`LAYER`=- I or ALL
`NPT`=- I or ALL

Stress tensor - The output location in
`Keyword4`and`Keyword5`can be defined via:- NPT
- Integration points.
- LAYER
- Composite shell layer when using /PROP/TYPE11 (SH_SANDW), /PROP/TYPE10 (SH_COMP).
- PLY
- Composite shell ply when using, /PROP/TYPE19 (PLY) or /PLY.
- MEMB
- Generalized membrane stresses per element. Cannot be used with NPT, LAYER or PLY options.
- BEND
- Generalized bending stresses per element. Cannot be used with NPT, LAYER or PLY options.

- Output can be requested for a specific location number (I), ALL, and in some case UPPER or LOWER. The output locations are separated by a / and can be in any order.
- The values of FLD damage factor
is equal to the ratio of the actual major principal strain value over the
forming limit curve value:
(1) $$FLDF=\frac{{\epsilon}_{major}}{{\epsilon}_{\mathrm{lim}}}$$Where, ${\epsilon}_{\mathrm{lim}}$ is the major principal strain at failure limit from FLD diagram (

`fct_ID`in /FAIL/FLD).The FLD compares the ${\epsilon}_{major}$ and ${\epsilon}_{\mathrm{lim}}$ using the same ${\epsilon}_{minor}$ .`FLDF`may be greater than 1, if the option /FAIL/FLD,`Ifail_sh`=4 is used. In this case, the damage factor is only calculated for post-processing and no elements are deleted. - The values of FLD zone index are
defined as:
- FLDZ=6
- Failure
- FLDZ=5
- Marginal
- FLDZ=4
- Safe
- FLDZ=3
- Compression
- FLDZ=2
- High wrinkle
- FLDZ=1
- Loose metal

Where,`fct_ID`- Defined in /FAIL/FLD
- ${\epsilon}_{\mathrm{lim}}$
- Major strain as a limit from FLD diagram from
`fct_ID`in /FAIL/FLD - ${\epsilon}_{minor}$ and ${\epsilon}_{major}$
- The minimum and maximum principal strains
`R`_{ani}- Average anisotropy factor defined in FLD input in /FAIL/FLD
- $Factor\_Marginal$
- Defined in FLD input in /FAIL/FLD
- $Factor\_Loosemetal$
- Defined in FLD input in /FAIL/FLD

(2) $$\alpha =\mathrm{arctan}\left(-\frac{{R}_{ani}}{1+{R}_{ani}}\right)$$`I_marg`- Defined in FLD input in /FAIL/FLD

- Option DAMG only
used with /FAIL/GURSON to output damage value (ratio of total
void volume fraction in current to it at ductile failure).
(5) $$D=\frac{{f}_{t}}{{f}_{F}}$$