While you can't own it for free, you can use it for free under specific circumstances.
Students and faculty at "qualified educational institutions."
Through this program, eligible students and faculty can download a of Robot Structural Analysis (and the Revit/AutoCAD ecosystem) for free. robot structural analysis free
If you don't qualify for the student version and the trial has expired, you might be looking for permanent free software. While "Robot" itself isn't open-source, several powerful tools offer similar structural analysis capabilities:
It’s one of the most popular search terms in the structural engineering community. Autodesk Robot Structural Analysis Professional is a powerhouse—it handles everything from complex steel connections to dynamic seismic analysis. But with great power comes a great price tag. While you can't own it for free, you
Autodesk provides a to students and educators. This isn't a "lite" version; it is the full professional suite.
You get access to all features, including linear and non-linear analysis. Autodesk provides a to students and educators
If you can manage to get the educational version or the trial, why stick with Robot?
Autodesk Robot Structural Analysis Professional is proprietary, commercial software.
: Use the Manual tab to input the exact elevation (level) for each floor.