FlexHopper is a GPU-accelerated particle and soft-body physics plugin for Grasshopper, enabling real-time simulation and form-finding. FlexHopper functions as a high-performance physics engine integrated directly into the Grasshopper environment. By leveraging NVIDIA FleX technology, it allows for the rapid computation of complex particle-based systems, including soft-body dynamics, fluid interactions, and rigid body collisions. The toolset provides a suite of components that bridge the gap between static algorithmic modelling and dynamic physical behaviour. It is designed to handle large-scale particle datasets, ensuring that simulations remain responsive even as geometric complexity increases. This plugin offers architects and computational designers a robust framework for exploring non-linear forms that respond to environmental forces, gravity, and material constraints.

The download is a 215 KB file containing .GHA files.

Users install the plugin into the Grasshopper libraries folder to access a new set of custom components. The workflow typically involves defining a particle system from existing geometry, assigning physical properties such as stiffness or friction, and connecting these to the solver component. Real-time feedback is visualised directly in the Rhino viewport, allowing for iterative adjustments to simulation parameters. Users can bake the resulting geometry at any time-step to capture the dynamic state of the model for further refinement.

This tool is essential for advanced architectural projects requiring form-finding for tensile structures, fabric membranes, or complex material folding. It is frequently employed in research-driven design practices and academic settings to simulate structural behaviour under load or to generate organic, fluid-like geometries. By pairing FlexHopper with standard Grasshopper components, designers can automate the creation of bespoke facade elements or intricate installation designs. It is a critical asset for professionals focusing on computational geometry, digital fabrication workflows, and high-performance structural prototyping within the Rhino ecosystem.