The modern tool for Performance-Based Design

Seismic | Wind | NLTHA

Built-in AI assistant

Use the built-in AI assistant in vfopro to interact with your model, automate modeling work, and extract results. No need to write code to set up an MCP server. Just bring an API key from your favorite LLM provider (Gemini, Claude, etc.) and start chatting.

Add structural elements

Material and hinge definitions

Plot results

Unlike many traditional structural analysis tools, vfopro is developed for the AI era. The sole objective of this tool is to help you reclaim up to 60 hours in your performance-based design projects by letting you drive the modeling tasks with the help of the AI assistant.

Interactive Modeling

Draw structural elements interactively in 2D and 3D CAD style, with precise control. Draw and assign properties in a 3D scene, 2D plan view, or elevation views. Interactively visualize the load assignment, node restraints, and extruded view of elements.

Nonlinear Hinges

Robust nonlinear behavior of material and hinges is the backbone of nonlinear time-history analysis. vfopro offers various types of nonlinear hinge capabilities for structural elements to perform analysis in compliance with ASCE 41.

Integrated hinges for beams and columns
Compound components for beams & columns
Nonlinear general-purpose link elements
Advanced nonlinear material for BRBs

OpenSees Analysis Engine

vfopro uses OpenSees Python as the analysis engine. OpenSees (Open System for Structural Earthquake Engineering Simulations) is a powerful tool for running non-linear analysis of structural models. It is constantly maintained and updated by researchers around the world.

Our team at Postyield handpicked the nonlinear material models and element types to implement in vfopro. We maintain a high standard of nonlinear analysis output by running verification tests.

Parallel Analysis for Multiple Loadcases

In vfopro, users can use multiple threads to run nonlinear analysis load cases in parallel, reducing analysis time. The analysis progress and error at each convergence step are displayed on the analysis monitor.

Robust Reporting

Investigating the analysis output by plotting hinge demands, drift profiles, BRB hysteresis, damage index, and many other built-in options in vfopro gives the engineers confidence in their results. The reports are saved in the model and auto-updated after each run.