/ANIM/SHELL/FLDZ

Engine Keyword Generates animation files containing the FLD failure zone factor for the FLD failure model as function of a shell element integration point.

Format

/ANIM/SHELL/FLDZ/Keyword4

Definition


Field	Contents	SI Unit Example
`Keyword4`	Output location: MEMB Middle layer UPPER Upper layer LOWER Lower layer (number of integration points is equal to one)

Comments

For a BATOZ shell element, the value is the average value of the Gauss points in the layer
The values of FLD zone index are:

FLDZ=6

Failure

$ε_{m a j o r} > ε_{\lim}$ $ε_{m a j o r} > ε_{\lim}$

FLDZ=5

Marginal

$ε_{\lim} > ε_{m a j o r} > ε_{m \arg i n a l}$ $ε_{\lim} > ε_{m a j o r} > ε_{m \arg i n a l}$

FLDZ=4

Safe

$ε_{m \arg i n a l} > ε_{m a j o r} > | ε_{m i n o r} |$ $ε_{m \arg i n a l} > ε_{m a j o r} > | ε_{m i n o r} |$

FLDZ=3

Compression

$- ε_{m i n o r} > ε_{m a j o r} > - ε_{m i n o r} \cdot \frac{R_{a n i}}{1 + R_{a n i}}$ $- ε_{m i n o r} > ε_{m a j o r} > - ε_{m i n o r} \cdot \frac{R_{a n i}}{1 + R_{a n i}}$

FLDZ=2

High wrinkle

$- ε_{m i n o r} \cdot \frac{R_{a n i}}{1 + R_{a n i}} > ε_{m a j o r}$ $- ε_{m i n o r} \cdot \frac{R_{a n i}}{1 + R_{a n i}} > ε_{m a j o r}$

FLDZ=1

Loose metal

$ε_{m a j o r}^{2} + ε_{m i n o r}^{2} > F a c t o r_L o o s e m e t a l^{2}$ $ε_{m a j o r}^{2} + ε_{m i n o r}^{2} > F a c t o r_L o o s e m e t a l^{2}$

Figure 1.

Where,

fct_ID

Defined in /FAIL/FLD

$ε_{\lim}$ $ε_{\lim}$

Major strain as a limit from FLD diagram from fct_ID in /FAIL/FLD

$ε_{m i n o r}$ $ε_{m i n o r}$ and $ε_{m a j o r}$ $ε_{m a j o r}$

The minimum and maximum principal strains

R_ani

Average anisotropy factor defined in FLD input in /FAIL/FLD

$F a c t o r_M a r g i n a l$ $F a c t o r_M a r g i n a l$

Defined in FLD input in /FAIL/FLD

$F a c t o r_L o o s e m e t a l$ $F a c t o r_L o o s e m e t a l$

Defined in FLD input in /FAIL/FLD

$α = \arctan (- \frac{R_{a n i}}{1 + R_{a n i}})$ $α = \arctan (- \frac{R_{a n i}}{1 + R_{a n i}})$

I_marg

Defined in FLD input in /FAIL/FLD

If I_marg= 2, the marginal curve is defined by shifting the FLD curve with the constant value $F a c t o r_M a r g i n a l$ $F a c t o r_M a r g i n a l$
$ε_{m \arg i n a l} = ε_{\lim} - F a c t o r_M a r g i n a l$ $ε_{m \arg i n a l} = ε_{\lim} - F a c t o r_M a r g i n a l$
If I_marg= 3, the marginal curve is defined as a factor of the $F a c t o r_M a r g i n a l$ $F a c t o r_M a r g i n a l$
$ε_{m \arg i n a l} = ε_{\lim} (1 - F a c t o r_M a r g i n a l)$ $ε_{m \arg i n a l} = ε_{\lim} (1 - F a c t o r_M a r g i n a l)$