/RWALL/LAGMUL

Block Format Keyword Defines infinite plane rigid walls using the Lagrange multiplier method. This keyword is not available for SPMD computation.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/RWALL/LAGMUL/type/rwal_ID/unit_ID
rwal_title
node_ID Slide grnd_ID1 grnd_ID2            
Dsearch                
XM YM ZM        
Mass VX0 VY0 VZ0    
XM1 YM1 ZM1        
Blank Format

Definitions

Field Contents SI Unit Example
type Rigid wall type keyword

(see table below)

  
rwal_ID Rigid wall identifier

(Integer, maximum 10 digits)

  
unit_ID Unit Identifier

(Integer, maximum 10 digits)

  
rwal_title Rigid wall title.

(Character, maximum 100 characters)

  
node_ID Node identifier (moving rigid wall).

(Integer)

  
Slide Sliding flag.
= 0
Sliding
= 1
Tied

(Integer)

  
grnd_ID1 Node group defining secondary nodes to be added to the rigid wall.

(Integer)

  
grnd_ID2 Node group defining secondary nodes to be deleted from the rigid wall.

(Integer)

  
Dsearch Distance for secondary search.

(Real)

 [ m ]
XM X coordinate of M, if node_ID = 0.

(Real)

  
YM Y coordinate of M, if node_ID = 0.

(Real)

  
ZM Z coordinate of M, if node_ID = 0.

(Real)

  
Mass Mass of the rigid wall, if node_ID ≠ 0.

(Real)

 [ kg ]
VX0 Initial velocity in X direction, if node_ID ≠ 0.

(Real)

 [ m s ] MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaamWaaeaada Wcaaqaaiaab2gaaeaacaqGZbaaaaGaay5waiaaw2faaaaa@39DE@
VY0 Initial velocity in Y direction, if node_ID ≠ 0.

(Real)

 [ m s ] MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaamWaaeaada Wcaaqaaiaab2gaaeaacaqGZbaaaaGaay5waiaaw2faaaaa@39DE@
VZ0 Initial velocity in Z direction, if node_ID ≠ 0.

(Real)

 [ m s ] MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaamWaaeaada Wcaaqaaiaab2gaaeaacaqGZbaaaaGaay5waiaaw2faaaaa@39DE@
XM1 X coordinate of M1

(Real)

  
YM1 Y coordinate of M1

(Real)

  
ZM1 Z coordinate of M1

(Real)

  

Rigid Wall Type

Type
Description
PLANE
∞ ¯ plane

Surface Input Type

Type
Description
PLANE
MM1 defines the normal direction

rwall_lagmul_plane2

Comments

  1. The first input to define the rigid wall is the coordinates of one point M or a node_ID in case of moving rigid wall.
  2. The next input is the coordinate of a point M1 and possibly a point M2 (in the case of a moving wall, M1 and M2 have the same motion as node_ID).
  3. The secondary nodes can be defined as a list by nodes and/or as the nodes that are initially at a distance less than Dsearch from the wall.
  4. The defined nodes must have a non-zero mass.