STAIRLab

Tools developed by the Structural Artificial Intelligence Lab at UC Berkeley.

Get Started Examples

Get started with basic examples

Uniaxial Materials

This example introduces the uniaxial material library in OpenSees.

Truss • Python • Tcl

Linear Truss

A finite element model of a simple truss is created, and static analysis is performed.

Fiber • Concrete • Python

Moment-Curvature Analysis

A reinforced concrete cross-section is modeled using a fiber section, and a moment-curvature analysis is performed.

More Examples

Features

Interactive

Easily return stiffness, mass, and damping matrices as NumPy arrays and join meshes without duplicate nodes and constraints.

Check the introduction

Fast

OpenSees uses state-of-the-art numerical libraries like OpenBLAS and Umfpack . Switching Python scripts to use opensees typically results in a 4x to 5x performance boost.

Compiling

Interoperable

Thanks to a rich open-source ecosystem, tools are available for interfacing OpenSees with a wide variety of industry-standard tools.

Ecosystem

Interactive

Easily return stiffness, mass, and damping matrices as NumPy arrays and join meshes without duplicate nodes and constraints.

Check the introduction

Fast

OpenSees uses state-of-the-art numerical libraries like OpenBLAS and Umfpack . Switching Python scripts to use opensees typically results in a 4x to 5x performance boost.

Compiling

Interoperable

Thanks to a rich open-source ecosystem, tools are available for interfacing OpenSees with a wide variety of industry-standard tools.

Ecosystem

An open source ecosystem

OpenSeesRT is open source and maintains its codebase in GitHub . It is supported by a thriving ecosystem of open-source packages, such as osmg , veux , and openbim .

Contribute

osmg

osmg is a Python library for generating building models in OpenSees.

Visualization with `veux`

veux is an open-source finite element visualization framework. Using a web-first approach, it provides several functions to simplify the creation of responsive visualizations.

Explore examples

OpenBIM

Import models from commercial pre-processors.

Example