REOS™
Integrated Analytical Ecosystem for High Fidelity Structural Simulation

Seamless story-based modeling within a professional graphical interface featuring robust nonlinear simulation and high-resolution visualization.
Integrated PIML material calibration, life cycle carbon assessment, and automated seismic risk analytics for comprehensive structural health management.
— Unified within a high-performance OpenSees-driven architecture.

Framework Notice: "REOS™ utilizes the OpenSees framework, developed by the Pacific Earthquake Engineering Research Center (PEER) at the University of California, Berkeley, via external runtime orchestration. REOS provides an independent graphical interface and data-processing layer. REOS™ is not affiliated with, or endorsed by, PEER or UC Berkeley."

Model Built in REOS

Nonlinear Simulation Post Processing

Fiber Result Investigation

Time Dependent Retrofitting Assessment

Technical Capabilities

REOS Conventional

Modeling & Simulation

Story-based graphical interface for seamless model assembly. Execute complete nonlinear simulations with high-fidelity.

Post-Processing & Visualization

Advanced visualization suite featuring deformed shape animation, fiber-level result display and plotting, and multi-variable contour mapping for stress resultants deformation responses.

Numerical Stability

Universal algorithm switching and dynamic substepping designed to eliminate premature convergence failures in complex analyses.

Modular Export

Generate clean, modular Tcl scripts optimized for manual intervention, HPC clusters, and distributed cloud operations.

REOS Smart Calibrator

Multi-Material Precision

Simultaneous calibration of multiple material models. Built for extreme precision and computational efficiency.

Intelligent Error Metrics

Features physics-informed error metrics and dynamic algorithm switching based on error surface smoothness.

REOS Risk Engine

Automated Assessment

End-to-end automation for IDA and MSA based seismic risk assessments. Auto-generation of comprehensive analytical reports.

High-Speed Computing

Parallel processing with granular user control over core allocation. Process vast datasets in minutes rather than days.

REOS LCSRSA Engine

Lifecycle Economics

Integrated assessment of life cycle economic and carbon costs for ageing infrastructure.

Retrofitting Optimization

Time-dependent performance-based assessment. Analyze multiple retrofitting scenarios to identify optimal cost-carbon combinations.

Documentation & Support

Getting Started Guide (v0.1)

Complete walkthrough of story-based modeling, GUI navigation, and your first non-linear model assembly.

Solver Runtime Configuration

Technical guide on linking your local OpenSees executable (Tcl/Python) to the REOS orchestration engine.

REALM AI Lab API Integration

Analytical models are automatically synchronized with high-precision parameters predicted from the REALM AI LAB digital library.

E-Learning & Capacity Building

Empowering the OpenSees Community

Advancing structural engineering through precision-driven modeling and rigorous analytical workflows.

REOS is dedicated to fostering technical excellence within the OpenSees community by demystifying complex nonlinear architectures. We provide researchers and practitioners with the pedagogical resources necessary to transition from basic scripting to advanced, high-fidelity structural health management. By integrating our intuitive orchestration layer with sound engineering principles, REOS transforms the steep learning curve of OpenSees into a streamlined path for innovation and professional growth.

Upcoming Professional Sessions

Sl. No.	Event Description	Date of Event	Resources
01	Webinar: Introduction to OpenSees: Learn Modelling and Analysis with REOS	May 24, 2026

Archive of Past Events

Sl. No.	Event Description	Date of Event	Resources

Licensing Options

Academic License

Free / Research Tier

Dedicated to students and researchers using OpenSees.

Full GUI Access: Story-based modeling
Post-Processing: Deformed shapes & Fiber analysis
TCL scripts: Clean tcl scripts for manual operation

Commercial License

Enterprise

For Performance-Based Seismic Design (PBSD).

Commercial Rights: Project Delivery
LCSRSA Module: Full Sustainability Risk Engine
Priority Support: From Experts at REALMRISK

Download Center

REOS v0.1 Beta Installer

Secure your evaluation key to access the latest high-fidelity simulation engine.

REOS™Integrated Analytical Ecosystem for High Fidelity Structural Simulation