OPENSEES > The Open System for Earthquake Engineering Simulation
The Open System for Earthquake Engineering Simulation (OpenSees) is a software framework for simulating the seismic response of structural and geotechnical systems. OpenSees has been developed as the computational platform for research in performance-based earthquake engineering at the Pacific Earthquake Engineering Research Center.
Capabilities
OpenSees has advanced capabilities for modeling and analyzing the nonlinear response of systems using a wide range of material models, elements, and solution algorithms. The software is designed for parallel computing to allow scalable simulations on high-end computers or for parameter studies.
OpenSees providing beam-column elements and continuum elements for structural and geotechnical models. A wide range of uniaxial materials and section models are available for beam-columns.
Nonlinear analysis requires a wide range of algorithms and solution methods. OpenSees provides nonlinear static and dynamic methods, equation solvers, and methods for handling constraints.
Getting Started
The best way to get started is to download the software and run an example.
Geotechnical Examples
- Simulating a Centrifuge Test
- Laterally-Loaded Pile Foundation (Static Analysis)
- One-dimensional Consolidation
- 2D Total Stress Site Response Analysis of a Layered Soil Column
- 2D Effective Stress Site Response Analysis of a Layered Soil Column
- Dynamic Effective Stress Analysis of a Slope
- GiD ProblemTypes for 2D Slope Analysis Input File Generation
- Excavation Supported by Cantilevered Sheet Pile Wall
- 3D Site Response Analysis of Sloping Ground
- Deep Foundation Subject to Lateral Spreading (p-y spring analysis)
Other Resources
Development of Geotechnical Capabilities in OpenSees
OpenSees Geotechnical Simulation Capabilities
