*MAT_169 (ARUP_ADHESIVE)

LS-DYNA Input Interface KeywordThis keyword defines adhesive bonding material.

Format

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
*MAT_169 or *MAT_ARUP_ADHESIVE
mat_ID	${\rho }_i$	E	v	TENMAX	GCTEN	SHRMAX	GCSHR
PWRT	PWRS

Definition

Field	Contents	SI Unit Example
mat_ID	Material identifier (Integer)
${\rho }_i$	Initial density (Real)	$\left[\frac{\text{kg}}{{\text{m}}^{\text{3}}}\right]$
E	Young’s modulus (Real)	$\left[\text{Pa}\right]$
v	Poisson's coefficient (Real)
TENMAX	Yield stress in tension (Real)	$\left[\text{Pa}\right]$
GCTEN	Energy per unit area for bond to fail in tension (Real)	$\left[\frac{\text{J}}{{\text{m}}^{\text{2}}}\right]$
SHRMAX	Yield stress in shear (Real)	$\left[\text{Pa}\right]$
GCSHR	Energy per unit area for bond to fail in shear (Real)	$\left[\frac{\text{J}}{{\text{m}}^{\text{2}}}\right]$
PWRT	Exponent value for failure in tension (Real)
PWRS	Exponent value for failure in shear (Real)

Comments

1. This keyword maps to /MAT/LAW83, /FAIL/SNCONNECT, /PROP/TYPE43 (CONNECT).
2. The material is fully compressible in the vertical direction from solid element face 1 to face 2.
3. The tension stiffness is in the vertical direction and shear stiffness is perpendicular to the vertical direction.
4. The option “_TITLE” can be added to the end of this keyword. When “_TITLE” is included, an extra 80 character long line is added after the keyword input line which allows an entity title to be defined.