Engineering analysis + design software

LUSAS plugin for Grasshopper

Release history

New features

Retrieving results from LUSAS in Grasshopper is now possible with the new components. This also makes optimisation processes using tools like Galapagos possible.
Loads can be assigned to a range of loadcases to aid with staged construction analyses using the new Assignment scope component.
Beam/shell slice utilities can be created using the new dedicated component.

New components

Assignment scope - Enables all existing LUSAS options for load assignment (loadcase range, analysis etc)
Beam/shell slice resultants - Creates beam/shell slice resultants utilities.
Solve - Solves any number of analyses in a linked LUSAS model.
Mesh results - Retrieves results for specific nodes/elements from a linked LUSAS model.
Member results - Retrieves results for members created in Grasshopper.
Eigenvalue results - Retrieves results from eigenvalue analyses.
Beam/shell slice results - Retrieves results for beam/shell slice resultants utilities created in Grasshopper.

Maintenance fix

Added functionality for diagnostic logs (accessed via the main menu in Grasshopper).

Maintenance fix

Enhancements

New components: Point Member, Volume Member, Volume Mesh, Activate/Deactivate, and Loadcase.
Points and volumes with attributes can now be created.
Staged construction analyses can be set up using the Activate/Deactivate component with nonlinear Loadcase controls.

Enhancements

Grillage/Plate, Inplane and Axisymmetric 2D analysis models are now supported
The model's analysis category can be selected on the 'LUSAS Model' component.
Mesh types compatible with each of the 2D analysis categories have been added to the 'Line/Surface mesh' components.

Enhancements

Line/surface member components can output and preview their geometry.
The 'Refer attribute' component can connect to an instance of LUSAS to get attribute type information.
Fixed an issue with Material/Section library and LUSAS version 22.0

New features

Open models in LUSAS can be updated in real time with the modifications in the Grasshopper script without having to restart LUSAS or make a new model with the 'Live link' component.
Structural members can be added to groups.

New components

Live link - Enable live updates between Grasshopper and a running instance of LUSAS.
Custom attribute - Create any LUSAS attribute by providing the LPI commands that define it
Refer attribute - Refer to an attribute that exists in the LUSAS model.
Gravity - Add gravity loads to analyses/loadcases.

Other improvements

Library section component supports precast sections.
NURBS surfaces with poles can be exported with adequate subdivisions.
Previously released example scripts have been enhanced.
New scripts provided to create models of a cooling tower, geodesic roof, mobius strip, spherical tank, and a twin girder bridge with vehicle load optimisation.

This initial release allows creation of structural models for LUSAS using dedicated Grasshopper components that enable the definition of attributes such as materials, sections, loads, supports, and more.
Example scripts create models of a curved girder bridge, tub girder, network tied-arch bridge, twisting tower, and a U-frame bridge.

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LUSAS is a trademark and trading name of Finite Element Analysis Ltd. Copyright 1982 - 2025. Last modified: December 22, 2025 . Privacy policy . Any modelling, design and analysis capabilities described are dependent upon the LUSAS software product, version and option in use.