Overview
The purpose of this test case is to validate some of the analysis of an asymmetric structure, specifically:
- Deflection
- Forces/Moments
- Linear Analysis
The Structural 3D results were compared against a third party analysis software.
Model Setup
The structure is a 53-node, 138-member frame structure supported by fixed supports. The structure is made entirely of steel round diameter 20 sections.
Evaluation points: 10
Solve Type: Linear Analysis (14 iterations)
Analysis Results
| Result | Location | SkyCiv | Third Party | Difference |
|---|---|---|---|---|
| Moment Z | Member 38, Start Node | -0.00184 kN-m | -0.00183 kN-m | -0.54645% |
| Moment Y | Member 119, End Node | 0.00322 kN-m | 0.00322 kN-m | 0.00000% |
| Shear Y | Member 49, Start Node | 0.09661 kN | 0.09662 kN | 0.01035% |
| Shear Z | Member 129, End Node | -0.06816 kN | -0.06816 kN | 0.00000% |
| Reaction Y | Node 51 | 0.20722 kN | 0.20724 kN | -0.04141% |
| Reaction Y | Node 41 | 0.83895 kN | 0.83890 kN | 0.00596% |
| Deflection X | Node 14 | 0.02806 mm | 0.02806 mm | 0.00000% |
| Deflection Y | Node 22 | -0.02224 mm | -0.02224 mm | 0.00000% |
| Rotation Z | Node 47 | 0.00139 rad | 0.00139 rad | 0.00000% |
| Rotation X | Node 84 | -0.00129 rad | -0.00129 | 0.00000% |
Result Screenshots
SkyCiv Free Frame Calculator
SkyCiv FREE Frame Calculator will generate and find the bending moment and shear force diagrams of a 2D frame structure. The free version allows you to input frames with a maximum of 3 members with applied point loads and moments for 2D frame analysis. Give the calculator a try or sign up for free today to get started with the software!