*DEFINE_FRICTION

LS-DYNA Input Interface KeywordDefine friction table between components.

Format

(1) (2) (3) (4) (5) (6) (7) (8)
*DEFINE_FRICTION
FRIC_ID FS_D FD_D DC_D VC_D
Repeat the following line to defined friction for each couple of part or set part
(1) (2) (3) (4) (5) (6) (7) (8)
PID_I PID_J FS_IJ FD_IJ DC_IJ VC_IJ TYPE_I TYPE_J

Definition

Field Contents SI Unit Example
FRIC_ID Friction table ID.

(Integer)
FS_D Default static friction coefficient.

(Real)
FD_D Default dynamic friction coefficient.

(Real)
DC_D Default decay friction coefficient.

(Real)
VC_D Default viscous friction coefficient.

(Real)
PID_I Part or set part ID.

(Integer)
PID_J Part or set part ID.

(Integer)
FS_IJ Static friction coefficient between parts I and J.

(Real)
FD_IJ Dynamic friction coefficient between parts I and J.

(Real)
DC_IJ Decay friction coefficient between parts I and J.

(Real)
VC_IJ Viscous friction coefficient between parts I and J.

(Real)
TYPE_I Set to PSET when PID_I is a part set number.
= blank
PID_I is a part.
= PSET
PID_I is a set of part.

(Character)

TYPE_J Set to PSET when PID_J is a part set number.
= blank
PID_I is a part.
= PSET
PID_I is a set of part.

(Character)

Comments

  1. This keyword maps to /FRICTION.
  2. 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.