CMSPDP

Bulk Data Entry Defines a spring damper element without reference to a property entry for multibody solution sequence.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
CMSPDP EID K G1 G2 B L PF TYPE  

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
CMSPDP 3 34.5 223 324 0.0 1.0   TRANS  

Definitions

Field Contents SI Unit Example
EID Unique element identification number.

(Integer > 0)

  
K Stiffness value.

Default = 0.0 (Real or blank)

  
G1, G2 Grid point identification number.

(Integer > 0)

  
B Damping value.

Default = 0.0 (Real or blank)

  
L Unstretched length/angle of spring damper. 3

Default = 0 (Real ≥ 0.0 or blank)

  
PF Preload force.

Default = 0 (Real or blank)

  
TYPE Type.
TRANS (Default)
ROT
blank
  

Comments

  1. The spring damper force is along the line segment connecting the grids G1 and G2.
  2. The positive preload force is a stretching force.
  3. If the unstretched length/angle of spring damper field (L) is blank:
    • For a translational spring, OptiStruct calculates the length between the two grid points (G1, G2) of the spring damper for the value of L.
    • For a rotational spring, L is set to 0.0.
  4. This card is represented as a spring element in HyperMesh.