Use case · powered by FEA Truss
FEA Truss for a roof rafter
Simulate a roof rafter live in your browser. This runs the real FEA Truss solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.
FEA — 2D Truss StudioLive
direct stiffness method · axial forces
Controls
A finite-element truss under a tip load. Members are colored by axial force; the shape shows the (scaled) deformation.
Presets
Data Inspector
Nodes7
Members11
Solvesingular
Max displacement0.000
Max axial force0.0
Governing equation
Reading this result: A 20-unit tip load drives a peak member force of 0.0. Linear FEA is linear: double the load and both the deflection and every member force double exactly. The 20x slider only magnifies the true (tiny) displacement so you can see it.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
About this simulation
The full FEA Truss tool models a roof rafter with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.
More you can do with FEA Truss
Other ways to simulate a roof rafter
Frequently asked questions
- How do I simulate a roof rafter?
- Open this page and use the live FEA Truss tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
- Is it free?
- Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
- Can I use my own numbers?
- Absolutely — every input is adjustable, and with data import you can drive a roof rafter from your own measurements.