# *MAT_B01 (SEATBELT)

LS-DYNA Input Interface KeywordDefines a 1D seatbelt material.

## Format

(1) (2) (3) (4) (5) (6) (7) (8)
*MAT_B01_{OPTION1} or *MAT_SEATBELT_{OPTION1}
mat_ID ${\rho }_{L}$ fct_load fct_uload Lmin RE E
If E > 0, insert the following line
(1) (2) (3) (4) (5) (6) (7) (8)
A I J AS Fmax Mmax R
If OPTION1=2D, insert the following lines
(1) (2) (3) (4) (5) (6) (7) (8)
EC TC E22 NU12
G12A

## Definition

Field Contents SI Unit Example
mat_ID Material identifier.

(Integer)

${\rho }_{L}$ Mass per unit length.

(Real)

$\left[\frac{\text{kg}}{\text{m}}\right]$

(Integer)

(Integer)

Lmin Minimum length for elements connected to slipring and retractors.

(Real)

$\left[\text{m}\right]$
RE
= 0
No stiffness reduction in compression.
= 1
Stiffness in compression is 1% of tensile stiffness=0,
E Elastic modulus for bending/compression stiffness.

(Real)

$\left[\frac{N}{{m}^{2}}\right]$
A Cross-sectional area for bending/compression stiffness.

(Real)

$\left[{\text{m}}^{2}\right]$
I Area moment of inertia.

(Real)

$\left[{\text{m}}^{4}\right]$
J Polar moment of inertia.

(Real)

$\left[{\text{m}}^{4}\right]$
AS Shear area.

(Real)

$\left[{\text{m}}^{2}\right]$
Fmax Maximum force in compression/tension.

(Real)

$\left[\text{N}\right]$
Mmax Maximum torque.

(Real)

$\left[\text{Nm}\right]$
R Rotational mass scaling factor.

(Real)

EC Elastic modulus for coating stiffness. 3

(Real)

$\left[\frac{N}{{m}^{2}}\right]$
TC Coating thickness. $\left[\text{m}\right]$
E22 (Optional) Elastic modulus in transverse direction. 3 $\left[\frac{N}{{m}^{2}}\right]$
NU12 (Optional) Poisson number. 3
G12 (Optional) Shear modulus. 3