Scalar Spring Property and Connection
Description: Defines a scalar spring element without reference to a property entry.
Format:
Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| EID | Element identification number. | Integer > 0 | Required |
| K | Stiffness value. | Real | Required |
| G1, G2 | Grid point identification numbers of connection points. | Integer > 0 | See Remark 2 |
| C1, C2 | Component numbers. | 0 ≤ Integer ≤ 6 | See Remark 2 |
| GE | Structural element damping coefficient. See Remark 5. | Real or blank | 0.0 |
| S | Stress coefficient. | Real or blank | 0.0 |
Remarks:
- Element identification numbers must be unique with respect to all other element identification numbers.
- A blank may be used to indicate a grounded terminal G1 or G2 with a corresponding blank or zero C1 or C2. A grounded terminal is a point whose displacement is constrained to zero.
- This single entry completely defines the element since no material or geometric properties are required.
- The two connection points (G1, C1) and (G2, C2) must be distinct.
- If Gi refers to a grid point, then Ci refers to component numbers in the displacement coordinate system specified by CD on the GRID entry.
- If PARAM, W4 is not specified, GE is ignored in transient response analysis. (See Section 5, Parameters, for more information on W4.)
- To obtain the damping coefficient GE, multiply the critical damping ratio C/C0, by 2.0.