Structural FEA

A browser-based finite element analysis (FEA) tool for structural engineers. Analyse beams, frames, trusses and plates directly in your browser with no installation required.

Key Features

  • 3D Modeling – Create nodes and members, draw planar quadrilateral and triangular plates, and generate circular/annular plates, cylindrical shells, and conical/frustum shells
  • Multiple Analysis Types - Linear (with tension/compression-only members), P-Delta, Buckling (Classic and Wittrick-Williams exact-member), and Modal
  • Comprehensive Results - View displacements, reactions, member force diagrams, member stress, and plate result contours
  • Load Cases & Combinations - Organize nodal, member, and plate surface loads into cases and factored combinations
  • Load Combination Generator - Auto-generate code-compliant combinations (AS/NZS 1170, ASCE 7, Eurocode 0, NBCC)
  • Section & Material Libraries - Access standard sections and materials from multiple countries
  • Spring Supports - Model elastic foundations and soil springs
  • Rigid Diaphragms - Constrain floor or wall nodes to a master for in-plane rigid-body motion
  • Design Code Checks - AS 4100:2020, AISC 360-16 & 22, Eurocode 3, and CSA S16-19 steel design checks via Member Analysis
  • DXF Import - Import CAD geometry directly as nodes, members, and plate meshes
  • PDF & Excel Reports (Pro) - Export professional analysis reports including geometry, loads, and results
  • Structure Wizard - Quick-start templates for common frame types
  • Health Check - Automated model validation to catch stability and connectivity issues
  • Load Generators - Convert floor, roof, and wall pressures (kPa/psf) to member distributed loads using automatic tributary widths: area loads onto beams, lateral loads onto columns
  • Share Model - Generate a share link to send a copy of your model to anyone
  • Cloud Storage - Save and sync projects across devices (with account)
  • No Installation - Works entirely in your browser

Quick Start

  1. Open the app at /structuralfea
  2. Draw nodes, members, and plates using Draw mode (Ctrl+D) and the Plates dialog
  3. Apply supports by selecting nodes and setting restraints in the properties panel
  4. Add loads via the context menu or Loads dialog
  5. Run analysis by clicking the button labelled with the selected analysis type (Linear by default)
  6. View results using the display toggles in the left sidebar

Navigation

Use the sidebar to explore specific topics:

  • Getting Started - First steps, the interface, sign conventions, and shortcuts
  • Tools - Drawing, selection, and editing
  • Modeling - Nodes, members, plates, sections, and materials
  • Loads - Load cases, combinations, and applied loads
  • Analysis & Results - Running analysis, viewing results, and design checks
  • File & Settings - Saving projects and app preferences