Elastic Element Property
Description: Specifies the stiffness and stress coefficient of a spring element (CELAS1 or CELAS3 entry).
Format:
Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| PIDi | Property identification number. | Integer > 0 | Required |
| Ki | Elastic property value. | Real | Required |
| GEi | Structural element damping coefficient. See Remark 4. | Real or blank | 0.0 |
| Si | Stress coefficient. | Real or blank | 0.0 |
Remarks:
- PELAS entries must all have unique property identification numbers.
- K and GE may be made frequency dependent for modal frequency response analysis and K may be made force dependent for nonlinear analysis by use of the PELAST entry.
- The use of negative spring values may result in fatal errors.
- One or two elastic spring properties may be defined on a single entry.
- To obtain the damping coefficient GE, multiply the critical damping ratio C/C0, by 2.0.
- If PARAM, W4 is not specified, GE is ignored in transient response analysis. (See Section 5, Parameters, for more information on W4.)