Autodesk Inventor Nastran 2025 R1 Full Version - General-purpose FEA tool powered by the Autodesk Nastran solver. It offers a wide range of simulations spanning multiple analysis types. Autodesk Inventor Nastran is a CAD-embedded, general-purpose FEA tool powered by the Autodesk Nastran solver. The new Nastran In-CAD offers a wide range of simulations spanning multiple analysis types, delivering another high-end simulation in a CAD-embedded workflow that works within Autodesk Inventor and SOLIDWORKS to help engineers and analysts make great products.