2D Plane Frame Analysis

Direct stiffness method · 3 DOF per node [ux, uy, rz] · verified against Moment_Frame_Stiffness_Analysis.xlsx

residual 9.66e-13Solved ✓

Elevation view

Geometry, supports, loads and results in place

X span 12.000 m · Y span 4.000 mM1M2M3M4M5M630.0 kN50.0 kN20.0 kN40.0 kN10.0 kN·m10.0 kN15.0 kN20.0 kN·mN1N2N3N4N5N6N7

Hover a node for its displacements. Moment / shear / axial overlays are plotted normal to each member with the governing value labelled.

Nodes, coordinates & supports

X positive right, Y positive up, rotation positive counter-clockwise.

NodeX (m)Y (m)uxuyrzSupportQuick set
N1Fixed
N2Free
N3Free
N4Fixed
N5Free
N6Free
N7Fixed
N8inactive
N9inactive
N10inactive

Leave X and Y blank to deactivate a node. 1 = restrained, 0 = free for each DOF (ux, uy, rz).

Some zero-stiffness DOFs were auto-restrained (unused nodes) to keep [K] invertible.