/SKEW/MOV2

Block Format Keyword Describes a moving local coordinate system.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/SKEW/MOV2/skew_ID
skew_title
node_ID1 node_ID2 node_ID3              

Definition

Field Contents SI Unit Example
skew_ID Skew identifier

(Integer, maximum 10 digits)

 
skew_title Skew title

(Character, maximum 100 characters)

 
node_ID1 Node identifier N1

(Integer)

 
node_ID2 Node identifier N2

(Integer)

 
node_ID3 Node identifier N3

(Integer)

 

Comments

  1. Moving skew defines a local coordinate system, defined by three nodes. At each time, the actual orientation of the skew is recalculated according to the actual position of these nodes.
  2. In 3D, the skew is defined as:

    node_ID1 and node_ID2 define Z '

    node_ID1 and node_ID3 define X " MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=xipgYlh9vqqj=hEeei0xXdbb a9frFf0=yqFf0dbba91qpepeI8k8fiI+fsY=rqaqpepae9pg0Firpe pesP0xe9Fve9Fve9qapdbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaaCiwaiaackcaaaa@3B5D@

    (1)
    Y ' = Z Λ X " MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=xipgYlh9vqqj=hEeei0xXdbb a9frFf0=yqFf0dbba91qpepeI8k8fiI+fsY=rqaqpepae9pg0Firpe pesP0xe9Fve9Fve9qapdbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaaCywaiaacEcacqGH9aqpceWHAbGbauaacqqHBoatcaWHybGaaiOi aaaa@4054@
    (2)
    X ' = Y ' Λ Z ' MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=xipgYlh9vqqj=hEeei0xXdbb a9frFf0=yqFf0dbba91qpepeI8k8fiI+fsY=rqaqpepae9pg0Firpe pesP0xe9Fve9Fve9qapdbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaaCiwaiaacEcacqGH9aqpcaWHzbGaai4jaiabfU5amjaahQfacaGG Naaaaa@40F8@
  3. When defining some conditions with respect to the skew in cylindrical coordinate system, the axis of the cylindrical coordinate system is assumed to pass through node N1.

    starter_frame_move2D
    Figure 1.