| Length |
|---|
| Flexural Modulus | ||
|---|---|---|
| Shear ModulusShear modulus G, used for the torsion solve. | ||
| Flexural Strength | ||
| Density | ||
| Mass |
|
|
||
| MOIThe area moment of inertia for the section | ||
|---|---|---|
| AreaCross-sectional area | ||
| Top HeightDistance from neutral axis to top of section | ||
| Bottom HeightDistance from neutral axis to bottom of section | ||
| Torsion Const. J Saint-Venant torsion constant. Exact for round sections; * marks thin-wall / open-section approximations, which are unconservative if warping is restrained at constraints. | ||
| Torsion RadiusDistance (or wall thickness, for open sections) used to convert torque to peak shear stress: tau = T*r/J. | ||
| D1 | ||
|---|---|---|
| D2 | ||
| D3 | ||
| D4 | ||
| Flip? |
Every entry handles four components: X lateral (axial), Y vertical (transverse), θ bending, ψ torsion.
Each component has a Displacement field and a Load field — one is your input, the other is computed and reported back.
Leave Fix unchecked to enter an applied force/moment in Load; the resulting displacement is reported. Check Fix to instead prescribe a displacement (blank or 0 = an ordinary support); the reaction is reported in Load.
The preset selector just stamps a common Fix pattern onto the checkboxes; toggle any box by hand and it switches to Custom.
The axial and torsion solves only run when at least one component of that kind is Fixed somewhere; otherwise they report zero.
Moments/torques are positive counter-clockwise; axial force is positive in tension.
Click on the chart to query points. Click on the beam elements to query the corresponding points.
Right click on the chart near a local extrema to latch on and find the local extrema.
Torsion of non-round sections (marked * on J) uses Saint-Venant approximations.
The flexural strength and mass properties are for your usage/reference only- they aren't used in calculations.