Turn on geometric nonlinearity (second-order effects) and you have probably hit the famous non-convergence error, then concluded the structure has buckled. That's true, but how did it buckle? Which member went first? Was it local or global buckling? Until now, that part stayed a mystery.
With our new solver you can see exactly what happens after buckling (post-buckling), quickly and robustly. Conventional solvers like Ansys and Abaqus trace the load path step by step, usually with a continuation method such as arc-length. In our benchmark against Abaqus, the same frames took nearly 295,000 equilibrium iterations. Ours needs no continuation: it resolves equilibrium directly and reached the same answer, within 1%, in 5 to 60 iterations.
See it for yourself, and check the numbers:
- Demo: awatif.co/api/buckling/demo
- Paper: awatif.co/api/buckling/paper
Update, October 2026: the solver is no longer for sale. The demo and the paper stay online, and I now teach structural engineers to build AI agents that drive the tools they already use. Happy to answer any questions on LinkedIn or by email.