*MAT_058 (LAMINATED_COMPOSITE_FABRIC)

LS-DYNA Input Interface KeywordDefines an orthotropic shell composite material for unidirectional layers, complete laminates, and woven fabrics material.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
MAT_058_{OPTION} or MAT_LAMINATED_COMPOSITE_FABRIC_{OPTION}
`mat_ID`	$ρ_{i}$	`E1`	`E2`	`E3`	$ν$ ₁₂	`Tau1`	`Gamma1`
`G12`	`G23`	`G31`	`SLIMT1`	`SLIMC1`	`SLIMT2`	`SLIMC2`	`SLIMS`
`AOPT`		`ERODS`
`XP`	`YP`	`ZP`	`A1`	`A2`	`A3`
`V1`	`V2`	`V3`	`D1`	`D2`	`D3`	`BETA`
`E11C`	`E11T`	`E22C`	`E22T`	`GMS`
`XC`	`XT`	`YC`	`YT`	`SC`

Definition

Field	Contents	SI Unit Example
`Option`	Element selection. SOLID Material is used for solid. (Character)
`mat_ID`	Material identifier. (Integer)
$ρ_{i}$	Initial density . (Real)	$[\frac{kg}{m^{3}}]$
`E1`	Young’s modulus in material directions 1. (Real)	$[Pa]$
`E2`	Young’s modulus in material directions 2. (Real)	$[Pa]$
`E3`	Young’s modulus in material directions 3. (Real)	$[Pa]$
$ν$ ₁₂	Poisson’s ratio between directions 1 and 2. (Real)	$[Pa]$
`Tau1`	Shear stress limit in direction 12 for nonlinear behavior. (Real)	$[Pa]$
`Gamma1`	Shear strain limit in direction 12 for nonlinear behavior. (Real)
`G12`	Shear modulus in direction 12. (Real)	$[Pa]$
`G23`	Shear modulus in direction 23. (Real)	$[Pa]$
`G31`	Shear modulus in direction 31. (Real)	$[Pa]$
`SLIMT1`	Factor to determine the minimum tensile stress limit after stress maximum in direction 1. (Real)
`SLIMC1`	Factor to determine the minimum compression stress limit after stress maximum in direction 1. (Real)
`SLIMT2`	Factor to determine the minimum tensile stress limit after stress maximum in direction 2. (Real)
`SLIMC2`	Factor to determine the minimum compression stress limit after stress maximum in direction 2. (Real)
`SLIMS`	Factor to determine the minimum shear stress limit after stress maximum. (Real)
`AOPT`	Material axis flag. = 0 (Default) Orthotropic axes defined by element nodes. = 1 Orthotropic axes defined by the vector between reference point and the solid center. = 3 Orthotropic axes defined by Vector V and element normal vector. = 4 Orthotropic axes defined with reference point and normal to vector V. < 0 The absolute value $\|A O P T\|$ is a coordinate system identifier which defines the orthotropic directions. (Integer)
`ERODS`	Maximum tensile strain for element deletion in direction 1 and 2. (Real)
`XP`, `YP`, `ZP`	Coordinates of reference point for `AOPT` = 1 and 4. (Real)
`A1`, `A2`, `A3`	Vector defining first orthotropy direction for `AOPT` = 2. (Real)
`V1`, `V2`, `V3`	A vector which in combination with element normal defines the first orthotropy direction for `AOPT` = 3 and 4. (Real)
`D1`, `D2`, `D3`	Components of vector for `AOPT` = 2. (Real)
`BETA`	Material angle for `AOPT` = 0, 3. (Real)	$[\deg]$
`E11C`	Initial softening strain in compression in the material direction 1. (Real)
`E11T`	Initial softening strain in tension in the material direction 1. (Real)
`E22C`	Initial softening strain in compression in the material direction 2. (Real)
`E22T`	Initial softening strain in tension in the material direction 2. (Real)
`GMS`	Initial softening shear strain. (Real)
`XT`	Yield stress in tension in direction 1. (Real)	$[Pa]$
`XC`	Yield stress in compression in direction 1. (Real)	$[Pa]$
`YT`	Yield stress in tension in direction 2. (Real)	$[Pa]$
`YC`	Yield stress in compression in direction 2. (Real)	$[Pa]$
`SC`	Maximum shear stress. (Real)	$[Pa]$

Comments

This material law is mapped to /MAT/LAW25 (I_form=1).
The option “_TITLE” can be added to the end of this keyword. When “_TITLE” is included, an extra 80 characters long line is added after the keyword input line which allows an entity title to be defined.