LUSAS 22.0 is a major release of the LUSAS finite element analysis (FEA) software suite, developed by LUSAS (Finite Element Analysis Ltd.), specializing in advanced engineering analysis and design for applications in bridges, civil/structural engineering, composites, marine/offshore, aerospace, and general engineering. Released around 2023–2024, it builds on previous versions (like 21.x) with significant enhancements focused on performance, model handling, and user productivity.
Key New Features and Improvements for LUSAS 22
- Full 64-bit Modeller Implementation: This is the headline upgrade, enabling the creation and analysis of much larger, more complex models compared to the previous 32-bit version. It addresses limitations in handling extensive geometry, meshes, and simulations common in infrastructure projects. While a 32-bit option remains available (e.g., for legacy scripts), 64-bit is now the recommended default for its superior capacity.
- New Geometry Engine: Improves modeling accuracy and efficiency, though it may require updates to some pre-v22 LVB (LUSAS Visual Basic) scripts. Models from older versions can generally be imported successfully.
- Grasshopper Plugin Enhancements: Integration with Rhino/Grasshopper for parametric modeling is expanded, allowing faster workflow for complex geometries in bridge and structural design.
- Vehicle and Rail Load Optimisation (VLO/RLO): Extended support for codes like UK CS 454, CS 458 (with ALL Models 1 & 2), EN1991-2, AASHTO, and others. Includes influence analysis at beam/shell slices for optimized traffic/rail loading positions.
- Design Code Updates: Additions for response spectra (e.g., ASCE 7-22, IRC:6-2017) and support for nonlinear analysis defaults. Also includes tools like the renamed “LUSAS Tank” system for automated 2D/3D modeling of containment tanks (e.g., LNG).
- Ease-of-Use Additions: Better import/export for large models, improved UI for load combinations, and facilities for RC frame design (e.g., neutral axis direction for uniaxial bending).
