*INITIAL_VELOCITY_GENERATION

LS-DYNA Input Interface KeywordDefine both translational and rotational initial velocities.

Format

(1) (2) (3) (4) (5) (6) (7) (8)
*INITIAL_VELOCITY_GENERATION
ID STYP OMEGA VX VY VZ    
XC YC ZC NX NY NZ   IRIGID

Definition

Field Contents SI Unit Example
ID
If STYP = 1
Part set identifier.
If STYP = 2
Part identifier.
If STYP = 3
Node set identifier.

(Integer)

STYP Identifier type to apply the initial velocities.
= 1 (Default)
ID is a Part set identifier.
= 2
ID is a Part identifier.
= 3
ID is a Node set identifier.

(Integer)

OMEGA Axial rotational velocity.

(Real)

[ rad s ]
VX, VY, VZ Translational velocity.

(Real)

[ m s ] MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaamWaaeaada Wcaaqaaiaab2gaaeaacaqGZbaaaaGaay5waiaaw2faaaaa@39DE@
XC, YC, ZC Position of the rotational axis.

(Real)

[ m ]
NX, NY, NZ Direction cosines for the rotational axis.

(Real)

IRIGID

Initial velocity for PART_INERTIA and *CONSTRAINED_NODAL_RIGID_BODY_INERTIA.

= 0
Initial velocity is defined in PART_INERTIA and *CONSTRAINED_NODAL_RIGID_BODY_INERTIA.
= 1
Initial velocity is defined in *INITIAL_VELOCITY_GENERATION.

(Integer)

Comments

  1. This keyword maps to /INIVEL/AXIS.