Failure Models

Failure Model Description

Failure Model Keyword	Type	Application	Description
/FAIL/ALTER	Stress-based for glass	Glass	Stress-based for glass
/FAIL/BIQUAD	Strain failure model	Ductile metal	Direct input on effective plastic strain to failure
/FAIL/CHANG	Chang-Chang model	Composite	Failure criteria for composites
/FAIL/COCKCROFT	Ductile failure model	Ductile material	Cockcroft-Latham failure model
/FAIL/CONNECT	Failure	Connection, spotweld	Normal and tangential failure model
/FAIL/EMC	Extended Mohr Coulomb model	Metal	Failure dependent on effective plastic strain
/FAIL/ENERGY	Energy isotrop	Metal, plastic	Specific energy
/FAIL/FABRIC	Traction	Fabric	Strain failure
/FAIL/FLD	Forming limit diagram	Metal Forming	Fld
/FAIL/HASHIN	Composite model	Composite	Hashin model
/FAIL/HC_DSSE	Extended Mohr Coulomb failure model	Metal	Strain based Ductile Failure Model: Hosford-Coulomb with Domain of Shell-to-Solid Equivalence
/FAIL/JOHNSON	Ductile failure model	Ductile metal	Johnson-Cook
/FAIL/LAD_DAMA	Composite delamination	Composite	Ladeveze delamination model
/FAIL/NXT	NXT failure model	Metal Forming	Similar to FLD, but based on stresses
/FAIL/ORTHSTRAIN	Orthotropic strain failure	Composite	Orthotropic strain failure criteria with size effects and strain rate effects
/FAIL/PUCK	Composite model	Composite	Puck model
/FAIL/SNCONNECT	Failure	Connection, spot weld	Failure criteria for plastic strain
/FAIL/SPALLING	Ductile + Spalling	Ductile metal	Spalling + Johnson-Cook
/FAIL/TAB1	Strain failure model	Ductile metal	based on damage accumulation using user-defined functions
/FAIL/TBUTCHER	Tuler-Butcher model	Ductile metal	Failure due to fatigue
/FAIL/TENSSTRAIN	Traction	Metal, plastic	Strain failure
USER1,USER2, USER3	User failure model
/FAIL/VISUAL	Visualization of max value		Visualization of the maximum value of every cycle in a simulation
/FAIL/WIERZBICKI	Ductile material	Ductile metal	Bao-Xue-Wierzbicki model
/FAIL/WILKINS	Ductile failure model	Ductile metal	Wilkins model

Element Compatibility - Part 1

Failure Model	2D Quad	8 node Brick	20 node Brick	4 node Tetra	10 node Tetra	8 node Thick Shell	16 node Thick Shell
/FAIL/ALTER
/FAIL/BIQUAD	✓	✓	✓	✓	✓	✓	✓
/FAIL/CHANG
/FAIL/COCKCROFT		✓	✓	✓	✓	✓	✓
/FAIL/CONNECT		✓
/FAIL/EMC	✓	✓	✓	✓	✓	✓	✓
/FAIL/ENERGY	✓	✓	✓	✓	✓	✓	✓
/FAIL/FABRIC
/FAIL/FLD
/FAIL/HASHIN	✓	✓	✓	✓	✓	✓	✓
/FAIL/HC_DSSE
/FAIL/JOHNSON	✓	✓	✓	✓	✓	✓	✓
/FAIL/LAD_DAMA	✓	✓	✓	✓	✓	✓	✓
/FAIL/NXT
/FAIL/ORTHSTRAIN	✓	✓	✓	✓	✓	✓	✓
/FAIL/PUCK	✓	✓	✓	✓	✓	✓	✓
/FAIL/SNCONNECT		✓
/FAIL/SPALLING	✓	✓	✓	✓	✓	✓	✓
/FAIL/TAB1	✓	✓	✓	✓	✓	✓	✓
/FAIL/TBUTCHER	✓	✓	✓	✓	✓	✓	✓
/FAIL/TENSSTRAIN	✓	✓	✓	✓	✓	✓	✓
/FAIL/USERi	✓	✓	✓	✓	✓	✓	✓
/FAIL/VISUAL	✓	✓	✓	✓	✓	✓	✓
/FAIL/WIERZBICKI	✓	✓	✓	✓	✓	✓	✓
/FAIL/WILKINS	✓	✓	✓	✓	✓	✓	✓

✓: yes

blank: no

Element Compatibility - Part 2

Failure Model	SHELL	TRUSS	BEAM
/FAIL/ALTER	✓
/FAIL/BIQUAD	✓
/FAIL/CHANG	✓
/FAIL/COCKCROFT	✓
/FAIL/CONNECT
/FAIL/EMC
/FAIL/ENERGY	✓
/FAIL/FABRIC	✓
/FAIL/FLD	✓
/FAIL/HASHIN	✓
/FAIL/HC_DSSE	✓
/FAIL/JOHNSON	✓
/FAIL/LAD_DAMA	✓
/FAIL/NXT	✓
/FAIL/ORTHSTRAIN	✓
/FAIL/PUCK	✓
/FAIL/SNCONNECT
/FAIL/SPALLING
/FAIL/TAB1	✓
/FAIL/TBUTCHER	✓
/FAIL/TENSSTRAIN	✓
/FAIL/USERi	✓
/FAIL/VISUAL	✓
/FAIL/WIERZBICKI	✓
/FAIL/WILKINS	✓

✓: yes

blank: no

Table 1. Law Compatibility with (Metal) Failure Model
Law	ALTER	BIQUAD	COCKCROFT	FLD	NXT	ENERGY	HC-DSSE	ECM	TENSSTRAIN	JOHNSON	CONNECT	SNCONNECT	SPALLING	TAB1	TBUTCHER	WIERZBICKI	WILKINS
/MAT/LAW0 (VOID)				✓											✓
/MAT/PLAS_PREDEF	✓	✓	✓	✓	✓	✓		✓	✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW1 (ELAST)	✓		✓	✓		✓			✓‡						✓
/MAT/LAW2 (PLAS_JOHNS)	✓	✓	✓	✓	✓	✓		✓	✓‡	✓			✓	✓	✓	✓	✓
/MAT/PLAS_ZERIL	✓	✓	✓	✓	✓	✓			✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW3 (HYDPLA)		✓				✓			✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW4 (HYD_JCOOK)		✓	✓			✓			✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW5 (JWL)
/MAT/LAW6 (HYDRO or HYD_VISC)						✓			✓‡						✓
/MAT/LAW10 (DPRAG1)			✓			✓			✓‡						✓
/MAT/LAW12 (3D_COMP)			✓			✓			✓‡
/MAT/LAW14 (COMPSO)			✓			✓			✓‡						✓
/MAT/LAW15 (CHANG)			✓	✓											✓
/MAT/LAW16 (GRAY)
/MAT/LAW19 (FABRI)			✓	✓											✓
/MAT/LAW21 (DPRAG)						✓			✓‡						✓
/MAT/LAW22 (DAMA)		✓	✓	✓		✓			✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW23 (PLAS_DAMA)		✓	✓			✓			✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW24 (CONC)			✓			✓			✓‡						✓
/MAT/LAW25 (COMPSH)			✓	✓											✓
/MAT/LAW27 (PLAS_BRIT)	✓	✓	✓	✓						✓			✓	✓	✓	✓	✓
/MAT/LAW28 (HONEYCOMB)			✓			✓			✓					✓	✓
USER1				✓*		✓	✓		✓						✓
USER2				✓*		✓	✓		✓						✓
USER3				✓*		✓	✓		✓						✓
/MAT/LAW32 (HILL)		✓	✓	✓	✓		✓			✓			✓	✓	✓	✓	✓
/MAT/LAW33 (FOAM_PLAS)			✓			✓	✓		✓						✓
/MAT/LAW34 (BOLTZMAN)			✓			✓	✓		✓						✓
/MAT/LAW35 (FOAM_VISC)			✓	✓		✓	✓		✓						✓
/MAT/LAW36 (PLAS_TAB)	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓			✓	✓	✓		✓
/MAT/LAW38 (VISC_TAB)			✓			✓	✓		✓						✓
/MAT/LAW40 (KELVINMAX)			✓			✓	✓		✓						✓
/MAT/LAW41 (LEE_TARVER)						✓	✓		✓
/MAT/LAW42 (OGDEN)			✓			✓	✓		✓						✓
/MAT/LAW43 (HILL_TAB)		✓	✓	✓	✓	✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW44 (COWPER)	✓	✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW48 (ZHAO)		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW49 (STEINB)		✓	✓			✓	✓		✓‡	✓			✓	✓	✓	✓	✓
/MAT/LAW50 (VISC_HONEY)			✓			✓	✓		✓						✓
/MAT/LAW52 (GURSON)			✓	✓		✓	✓		✓						✓
/MAT/LAW53 (TSAI_TAB)			✓			✓	✓		✓						✓
/MAT/LAW54 (PREDIT)							✓
/MAT/LAW57 (BARLAT3)			✓			✓	✓		✓
/MAT/LAW58 (FABR_A)			✓			✓	✓
/MAT/LAW59 (CONNECT)							✓				✓	✓
/MAT/LAW60 (PLAS_T3)		✓	✓	✓		✓	✓	✓	✓	✓			✓	✓	✓	✓	✓
/MAT/LAW62 (VISC_HYP)			✓			✓	✓		✓						✓
/MAT/LAW63 (HANSEL)		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW64 (UGINE_ALZ)		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW65 (ELASTOMER)		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW66		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW68 (COSSER)			✓			✓	✓		✓
/MAT/LAW69			✓			✓	✓		✓						✓
/MAT/LAW70 (FOAM_TAB)			✓			✓	✓		✓				✓		✓
/MAT/LAW72 (HILL_MMC)		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW73		✓	✓	✓	✓	✓	✓		✓	✓			✓		✓	✓	✓
/MAT/LAW74		✓	✓	✓		✓	✓		✓	✓			✓		✓	✓	✓
/MAT/LAW75 (POROUS)							✓
/MAT/LAW76 (SAMP)		✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW77			✓			✓	✓		✓				✓		✓
/MAT/LAW78		✓	✓	✓	✓	✓	✓	✓	✓	✓			✓	✓	✓	✓	✓
/MAT/LAW79 (JOHN_HOLM)	✓	✓	✓	✓		✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW80		✓	✓	✓	✓	✓	✓		✓	✓			✓	✓	✓	✓	✓
/MAT/LAW81							✓
/MAT/LAW82			✓			✓	✓		✓						✓
/MAT/LAW83							✓					✓
/MAT/LAW84		✓	✓				✓	✓
/MAT/LAW87 (BARLAT2000)		✓	✓				✓			✓				✓
/MAT/LAW88						✓	✓		✓						✓
/MAT/LAW90						✓	✓		✓				✓		✓
/MAT/LAW92			✓	✓	✓	✓	✓		✓	✓			✓		✓
/MAT/LAW93 (ORTH_HILL) or (CONVERSE)		✓	✓			✓	✓		✓						✓	✓
/MAT/LAW94 (YEOH)			✓			✓	✓		✓						✓
/MAT/LAW95 (BERGSTROM_BOYCE)			✓			✓	✓		✓						✓
/MAT/LAW97 (JWLB)
/MAT/LAW100 (MNF)			✓			✓			✓						✓
/MAT/LAW102 (DPRAG2)			✓			✓			✓‡						✓
/MAT/LAW103 (HENSEL-SPITTEL)		✓	✓	✓		✓		✓	✓	✓			✓	✓	✓	✓	✓
/MAT/LAW106 (JCOOK_ALM)		✓	✓			✓		✓	✓	✓			✓	✓	✓	✓	✓

Law Compatibility with (Composite) Failure Model

Law	ORTHSTRAIN	FABRIC	HASHIN	LAD_DAMA	PUCK	CHANG	USERi	VISUAL
/MAT/LAW0 (VOID)	✓						✓
/MAT/PLAS_PREDEF	✓						✓	✓
/MAT/LAW1 (ELAST)	✓			✓***			✓	✓
/MAT/LAW2 (PLAS_JOHNS)	✓						✓	✓
/MAT/PLAS_ZERIL							✓	✓
/MAT/LAW3 (HYDPLA)							✓	✓
/MAT/LAW4 (HYD_JCOOK)							✓	✓
/MAT/LAW5 (JWL)							✓
/MAT/LAW6 (HYDRO or HYD_VISC)							✓	✓
/MAT/LAW10 (DPRAG1)	✓						✓	✓
/MAT/LAW12 (3D_COMP)	✓		✓	✓	✓		✓	✓
/MAT/LAW14 (COMPSO)	✓		✓	✓	✓		✓	✓
/MAT/LAW15 (CHANG)	✓					✓	✓	✓
/MAT/LAW16 (GRAY)							✓
/MAT/LAW18 (THERM)	✓						✓
/MAT/LAW19 (FABRI)						✓	✓	✓
/MAT/LAW21 (DPRAG)	✓						✓	✓
/MAT/LAW22 (DAMA)	✓					✓	✓	✓
/MAT/LAW23 (PLAS_DAMA)	✓						✓	✓
/MAT/LAW24 (CONC)	✓						✓	✓
/MAT/LAW25 (COMPSH)	✓		✓	✓**	✓	✓	✓	✓
/MAT/LAW27 (PLAS_BRIT)	✓						✓	✓
/MAT/LAW28 (HONEYCOMB)							✓	✓
USER1	✓						✓	✓
USER2	✓						✓	✓
USER3	✓						✓	✓
/MAT/LAW32 (HILL)	✓						✓	✓
/MAT/LAW33 (FOAM_PLAS)	✓						✓	✓
/MAT/LAW34 (BOLTZMAN)	✓						✓	✓
/MAT/LAW35 (FOAM_VISC)	✓						✓	✓
/MAT/LAW36 (PLAS_TAB)	✓						✓	✓
/MAT/LAW38 (VISC_TAB)	✓						✓	✓
/MAT/LAW40 (KELVINMAX)	✓						✓	✓
/MAT/LAW41 (LEE_TARVER)	✓						✓	✓
/MAT/LAW42 (OGDEN)	✓						✓	✓
/MAT/LAW43 (HILL_TAB)	✓						✓	✓
/MAT/LAW44 (COWPER)	✓						✓	✓
/MAT/LAW48 (ZHAO)	✓						✓	✓
/MAT/LAW49 (STEINB)	✓						✓	✓
/MAT/LAW50 (VISC_HONEY)	✓						✓	✓
/MAT/LAW52 (GURSON)	✓						✓	✓
/MAT/LAW53 (TSAI_TAB)	✓						✓	✓
/MAT/LAW54 (PREDIT)							✓
/MAT/LAW57 (BARLAT3)	✓						✓	✓
/MAT/LAW58 (FABR_A)	✓	✓					✓	✓
/MAT/LAW59 (CONNECT)							✓
/MAT/LAW60 (PLAS_T3)	✓						✓	✓
/MAT/LAW62 (VISC_HYP)	✓						✓	✓
/MAT/LAW63 (HANSEL)	✓						✓	✓
/MAT/LAW64 (UGINE_ALZ)	✓						✓	✓
/MAT/LAW65 (ELASTOMER)	✓						✓	✓
/MAT/LAW66	✓						✓	✓
/MAT/LAW68 (COSSER)	✓						✓	✓
/MAT/LAW69	✓						✓	✓
/MAT/LAW70 (FOAM_TAB)	✓						✓	✓
/MAT/LAW71	✓						✓	✓
/MAT/LAW72 (HILL_MMC)	✓		✓				✓	✓
/MAT/LAW73	✓						✓	✓
/MAT/LAW74	✓						✓	✓
/MAT/LAW75 (POROUS)							✓	✓
/MAT/LAW76 (SAMP)	✓						✓	✓
/MAT/LAW77							✓	✓
/MAT/LAW78	✓						✓	✓
/MAT/LAW79 (JOHN_HOLM)	✓						✓	✓
/MAT/LAW80	✓						✓	✓
/MAT/LAW81	✓						✓	✓
/MAT/LAW82	✓						✓	✓
/MAT/LAW83							✓
/MAT/LAW84	✓						✓	✓
/MAT/LAW87 (BARLAT2000)	✓						✓	✓
/MAT/LAW88	✓						✓	✓
/MAT/LAW90							✓	✓
/MAT/LAW92	✓						✓	✓
/MAT/LAW93 (ORTH_HILL) or (CONVERSE)	✓						✓	✓
/MAT/LAW94 (YEOH)							✓	✓
/MAT/LAW95 (BERGSTROM_BOYCE)							✓	✓
/MAT/LAW97 (JWLB)							✓
/MAT/LAW100 (MNF)							✓	✓
/MAT/LAW102 (DPRAG2)	✓						✓	✓
/MAT/LAW103 (HENSEL-SPITTEL)	✓		✓	✓	✓		✓	✓
/MAT/LAW106 (JCOOK_ALM)	✓		✓	✓	✓		✓	✓

✓: yes

blank: no

* : for shells only

** : for solid only

***: LAW1 and /FAIL/LAD_DAMA could only together used as interply material by Plyxfem in /PROP/TYPE17

‡ : flag I_strain (defined in property card) must be activated

Comments

Failure models are not available with global integration (N=0 in /PROP/SHELL) for shells.
Keyword USER1, USER2 and USER3 refer to /FAIL/USERi for shell and brick elements.
Up to 6 failure models can be applied to a single material, each failure model representing a failure mode.
Failure models can be used for SPH simulation for all materials compatible with SPH formulation.
Four failure models (FLD, JOHNSON, TAB1, and TBUTCHER) are compatible when X-FEM provided property TYPE1 (SHELL), TYPE11 (SH_SANDW), or TYPE51 is used.
/FAIL/TAB1 and /PROP/TYPE51 cannot be used with XFEM yet.
FAIL/ORTHSTRAIN is compatible with material or failure which could be used with orthotropic properties.