Frame02 - Temperature Loading✔!
Example Description
The various types of frame temperature loads that can be modeled in SAP2000 are tested in this example using a cantilever beam and a propped cantilever beam. The beam is a 2 inch wide by inch deep rectangular section.
In SAP2000, three types of temperature loads can be applied on a frame element: an overall change in temperature; a temperature variation along the element length in the local 1 direction; and a temperature gradient perpendicular to the element length (local 2 or 3 directions).
For this example, each of these types of temperature loads is applied separately to both the cantilever beam and the propped cantilever beam. The free-end displacements in the cantilever beam model and the end reaction in the propped cantilever beam model are compared to independent hand calculated results.
Important Note: Shear deformations are ignored in this analysis. In SAP2000 this is achieved by setting the property modification factor for shear to 0.
Tested Features
- The specification of
- Joint patterns
- The application of
- Temperature increase
- Transverse temperature gradient
- The calculation of
- Displacements in free expansion
- Reaction forces in restrained cases caused by temperature loads
Results Comparison
Library
Object Link: https://bim.aecbolt.com/objidq7qba03vlgl3gkos8sbhh3.libobj
Model A:Free-End Cantilever
Load Case | Output Parameter | AEC|BOLT BIM Cloud App | SAP2000 | Independent | Percent Difference (SAP2000 vs Independent) | Percent Difference (AEC|BOLT BIM Cloud App vs Independent) |
---|---|---|---|---|---|---|
1 | Ux (free end) (in) | 0.0013 | 0.00130 | 0.00130 | 0% | 0.0004% |
3 | Uz (free end) (in) | -0.0065 | -0.00650 | -0.00650 | 0% | 0.0008% |
Model B:Propped Cantilever
Load Case | Output Parameter | AEC|BOLT BIM Cloud App | SAP2000 | Independent | Percent Difference (SAP2000 vs Independent) | Percent Difference (AEC|BOLT BIM Cloud App vs Independent) |
---|---|---|---|---|---|---|
1 | Fx (at prop) (kips) | -22.61985 | -22.62 | -22.62 | 0% | 0.00067% |
3 | Fz (at prop) (kips) | 2.54483 | 2.545 | 2.545 | 0% | 0.00659% |