RCROSS

Bulk Data Entry Defines a pair of response quantities for computing the cross-power spectral density functions in random response analysis.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
RCROSS SID RTYPE1 ID1 COMP1 RTYPE2 ID2 COMP2

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
RCROSS 20 DISP 50 2 STRESS 150 8 4

Definitions

Field Contents SI Unit Example
SID RCROSS set identification number.

No default (Integer > 0)
RTYPE# Response quantity type. At least one field must be selected. If either RTYPE1 or RTYPE2 is blank, then the blank field takes the default from the defined field.
DISP
Displacement vector
VELO
Velocity vector
ACCEL
Acceleration vector
STRESS
Element stress
STRAIN
Element strain
SPCFORCE
SPC force
ID# Element, grid, or scalar point identification number.

No default (Integer > 0)
COMP# Component code (item) identification number. 2

No default (Integer > 0)

Comments

  1. This entry is required for computing the cross-power spectral density function. SID must be selected with the I/O Option RCROSS. Fields RTYPE1, ID1, and COMP1 represent the first response quantity and fields RTYPE2, ID2, and COMP2 represent the second response quantity.
  2. For elements, COMP# represents a component of the element stress or strain as described below.
    Element Stress/Strain Item Number Code
    All Solid Elements Normal X 6 or 12
    Normal Y 7 or 13
    Normal Z 8 or 14
    Shear XY 9 or 15
    Shear YZ 10 or 16
    Shear XZ 11 or 17
    All Shell Elements Normal X at Z1 3 or 4
    Normal X at Z2 10 or 11
    Normal Y at Z1 5 or 6
    Normal Y at Z2 12 or 13
    Shear XY at Z1 7 or 8
    Shear XY at Z2 14 or 15
  3. For grid points, COMP# represents a component of the displacement, velocity, acceleration or spcforce as described below.
    Response
    Number Code
    Translation X
    1 or 7
    Translation Y
    2 or 8
    Translation Z
    3 or 9
    Rotation X
    4 or 10
    Rotation Y
    5 or 11
    Rotation Z
    6 or 12
  4. For scalar points, COMP# should always be 1.