*DEFINE_SD_ORIENTATION

LS-DYNA Input Interface KeywordDefines stiffness direction of discrete springs.

Format

(1) (2) (3) (4) (5) (6) (7) (8)
*DEFINE_SD_ORIENTATION
VID VFLAG XT YT ZT N1 N2  

Definition

Field Contents SI Unit Example
VID Direction identifier

(Integer)
VFLAG
= 0 (Default)
Coordinate input
= 2
Nodal input

(Integer)
XT, YT, ZT If VFLAG = 0, the direction is specified by the vector XT, YT, ZT

(Real)

 [ m ]
N1, N2 If VFLAG = 2, the direction specified by nodes N1-N2

(Integer)

Comments

  1. This keyword maps to the X-axis of /SKEW/FIX or /SKEW/MOV.
  2. 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.