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Shell Frame


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)

Shell frame

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

Shell frame reactions
Showing reactions along the y-axis through linear analysis (Plan View)

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!

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