/ANIM/SHELL/DAMA
Engine Keyword Generates animation files containing a damage value for each layer of a shell element. The damage value is the maximum of damage over time of all failure criteria associated to the material.
Format
/ANIM/SHELL/DAMA/Keyword4/Keyword5
Definition
Field  Contents  SI Unit Example 

Keyword4  Output location:


Keyword5  Result type or location:

Comments
 In case of
BATOZ shell element, the value is the average value of the Gauss points in the
layer.
This applies only to failure criteria defined with Failure Models keywords, failure defined inside material laws (/MAT/LAW52 (GURSON)) is currently not available.
 The damage value,
D is the maximum value of all failure criteria of the
model.
The damage value, which is displayed, is the maximum damage value over time.
In case of composite shell element property TYPE51, the damage value for one layer is computed as the maximum value over the all integration points of its layer.(1) $$D(T)={\mathrm{max}}_{t\le T}\left(D(t)\right)$$  The damage value, D is 0 ≤ D ≤ 1. The status for
fracture is:
Free, if 0 ≤ D < 1
Failure, if D = 1
 D is
computed for every failure criteria as follows:
 Strain based failure (/FAIL/BIQUAD)
(2) $$D={\displaystyle \sum \frac{\text{\Delta}{\epsilon}_{p}}{{\epsilon}_{f}}}$$  JohnsonCook failure (/FAIL/JOHNSON)
(3) $$D=\sum \frac{\mathrm{\text{\Delta}}{\varepsilon}_{p}}{{\varepsilon}_{f}}$$  TulerButcher failure (/FAIL/TBUTCHER)
(4) $$D=\frac{{\underset{0}{\overset{t}{\int}}\left(\sigma {\sigma}_{r}\right)}^{\lambda}dt}{K}$$  Wilkins failure (/FAIL/WILKINS)
(5) $$D=\frac{{\displaystyle \int {W}_{1}{W}_{2}d{\epsilon}_{p}}}{{D}_{f}}$$  FLD failure (/FAIL/FLD)
(6) $$D=\underset{time}{Max}\left(\frac{{\epsilon}_{major}}{{\epsilon}_{\mathrm{lim}}}\right)$$
Where, ${\epsilon}_{\mathrm{lim}}$
 Major strain as limit from FLD function
 BAOXUEWierzbicki failure (/FAIL/WIERZBICKI)
(7) $$D={\displaystyle \sum \frac{\text{\Delta}{\epsilon}_{p}}{{\overline{\epsilon}}_{f}}}$$  Strain failure model (/FAIL/TENSSTRAIN)
(8) $$D=\underset{\mathit{time}}{\mathit{Max}}\left(\frac{{\varepsilon}_{1}{\varepsilon}_{{t}_{1}}}{{\varepsilon}_{{t}_{2}}{\varepsilon}_{{t}_{1}}}\right)$$  Strain failure model (/FAIL/FABRIC)
(9) $$D=Max\left(\frac{{\epsilon}_{1}{\epsilon}_{f1}}{{\epsilon}_{r1}{\epsilon}_{f1}},\frac{{\epsilon}_{2}{\epsilon}_{f2}}{{\epsilon}_{r2}{\epsilon}_{f2}}\right)$$  Energy density failure model (/FAIL/ENERGY):
(10) $$D=\underset{\mathit{time}}{\mathit{Max}}\left(\frac{E{E}_{1}}{{E}_{2}{E}_{1}}\right)$$  Chang failure (/FAIL/CHANG)The maximum damage for different failure mode:
(11) $$D=\mathit{Max}\left({e}_{f}{}^{2},{e}_{c}{}^{2},{e}_{m}{}^{2},{e}_{d}{}^{2}\right)$$  Hashin Composite failure (/FAIL/HASHIN)
The maximum damage for different failure mode
For unidirectional lamina model:(12) $$D=Max\left({F}_{1},{F}_{2},{F}_{3},{F}_{4},{F}_{5}\right)$$For fabric lamina model:(13) $$D=Max\left({F}_{1},{F}_{2},{F}_{3},{F}_{4},{F}_{5},{F}_{6},{F}_{7}\right)$$  Puck Composite failure (/FAIL/PUCK) The maximum damage for different failure mode:
(14) $$D=\mathit{Max}\left({e}_{f}(\mathit{tensile}),{e}_{f}(\mathit{compression}),{e}_{f}(\mathit{ModeA}),{e}_{f}(\mathit{ModeB}),{e}_{f}(\mathit{ModeC})\right)$$  Ladeveze failure (/FAIL/LAD_DAMA)Only used for Plyxfem in /PROP/TYPE17:
(15) $$\dot{d}=\frac{k}{a}\left[1\mathrm{exp}\left(a\langle w\left(Y\right)d\rangle \right)\right]$$  Strain Failure Model with dependence on Lode angle (/FAIL/TAB1)
(16) $$D=\frac{\sum \mathrm{\text{\Delta}}D}{{D}_{crit}}$$  NXT Failure Model (/FAIL/NXT)
(17) $$D=\frac{{\lambda}_{f}}{2}$$  Strain based Ductile Failure Model (/FAIL/HC_DSSE)
(18) $$D={\displaystyle \sum \frac{\text{\Delta}{\overline{\epsilon}}_{p}}{{\overline{\epsilon}}_{HC}^{pr}\left(\eta \right)}}$$
 Strain based failure (/FAIL/BIQUAD)
 This
option is available only if Keyword4 = N (for
each defined layer N allows to compute shell damage value within
each integration point NIP of layer N). This
option is only available for /PROP/TYPE51 and
PCOMPP (/PROP/TYPE51 or
/PROP/PCOMPP with multiple integration points through each
layer).
Nevertheless, Keyword4=ALL combined with Keyword5=ALL is allowed.