This calculator performs the analysis of a 2D planar truss using OpenSeesPy (a Python library), determining the nodal displacements and internal forces of each member.
Technical assumptions
Input
Cross-sectional area of truss elements,
A
:0.005 m^2Youngs modulus of truss elements,
E
:200 GPaGeometry
Parameter diagram
Applied Force
Parameter diagram
Output graph
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👉Member force diagram: red (negative) = compression, blue (positive) = tension
Output table
Node & member tags
displacement_list
Node 1: | Ux = 0.00 mm | Uy = 0.00 mm |
Node 2: | Ux = 0.50 mm | Uy = -3.59 mm |
Node 3: | Ux = 0.91 mm | Uy = -3.34 mm |
Node 4: | Ux = 1.24 mm | Uy = -2.88 mm |
Node 5: | Ux = 1.58 mm | Uy = 0.00 mm |
Node 6: | Ux = 0.19 mm | Uy = -2.73 mm |
Node 7: | Ux = 0.46 mm | Uy = -2.89 mm |
Node 8: | Ux = 1.25 mm | Uy = -3.41 mm |
internal_forces
Force in member 1 | (nodes 1 to 2) is 100.66 kN |
Force in member 2 | (nodes 2 to 3) is 100.66 kN |
Force in member 3 | (nodes 3 to 4) is 83.93 kN |
Force in member 4 | (nodes 4 to 5) is 83.93 kN |
Force in member 5 | (nodes 5 to 6) is -104.91 kN |
Force in member 6 | (nodes 6 to 7) is -63.25 kN |
Force in member 7 | (nodes 7 to 8) is -63.25 kN |
Force in member 8 | (nodes 1 to 8) is -117.39 kN |
Force in member 9 | (nodes 2 to 8) is 60.0 kN |
Force in member 10 | (nodes 3 to 7) is 75.89 kN |
Force in member 11 | (nodes 4 to 6) is 50.0 kN |
Force in member 12 | (nodes 3 to 8) is -62.58 kN |
Force in member 13 | (nodes 3 to 6) is -41.67 kN |