RapidCAD · Mechanical Engineering AI

Your topology software creates meshes.
Our AI creates CAD.

Skip topology optimization entirely. RapidCAD takes your load case and generates production-ready CAD directly — no mesh reconstruction, no manual remodeling.

https://tally.so/r/MeOrJ8

01 / The problem

Optimization gives you a mesh.
Your CAD tool needs features.

What you get today

An organic voxel mesh from the optimizer

What you actually need

A clean parametric solid — ready to manufacture

Engineers spend hours manually reconstructing CAD from optimized meshes.

02 / How it works

From FEA file to CAD model in three steps.

Upload .inp file

Drop your Abaqus or CalculiX input file — geometry, materials, boundary conditions, and loads are parsed automatically.

AI generates geometry

The AI agent runs its internal FEA loop — meshing, simulating, reading results, and revising geometry — until every structural constraint is satisfied.

Download and edit

Export as STEP or open directly in Inventor or FreeCAD.

Under the hood — the AI loop

The LLM proposes a parametric CAD update from design intent, constraints, and previous run data.
Physics-based solvers evaluate stress, displacement, mass, and manufacturability.
Results feed back into the next prompt, iterating until targets are met with a fully editable, feature-based CAD object.

03 / Parse summary

We read your existing FEA setup.
You don't re-enter anything.

bracket_topo_opt.inp — parse summary

Geometry— 892 nodes, 1,204 elements (C3D4)
Material— Steel E = 200 GPa, ν = 0.3
Boundary conditions— 3 node sets constrained
Load cases— 2 detected

All checks passed — ready to generate CAD

04 / Examples

See it in action.

Same load case, but without topology optimization software. RapidCAD's agent went directly from boundary conditions to this parametric truss structure.

Topo result

Topology optimization output

Usually a mesh-like result that is hard to edit directly and requires manual CAD reconstruction.

✗ Not editable in CAD
✗ Not ready to manufacture
✗ Requires days of manual reconstruction

RAPIDCAD AI

RapidCAD output

A constraint-aware parametric model that remains editable, auditable, and ready for downstream engineering workflows.

✓ Editable in Autodesk Inventor & FreeCAD
✓ Ready to manufacture
✓ Generated in minutes

06 / Integrations

Works with the tools you already use.

Input

Abaqus .inp

Ansys .cdb

RapidCAD

Design
Agent

Output

ISO 10303 .step

Autodesk Inventor .part

FreeCAD .fcstd

Drop your load case. Get production-ready CAD.

Send your Abaqus or CalculiX file — the agent runs its FEA loop and returns a fully editable parametric CAD model.