CSI Perform3D — Lifetime License

Modeling

Nonlinear features include a number of nonlinear building components such as frame hinges, shear walls, dampers, braces, and seismic isolators.

Analysis

The Perform3D analysis engine provides tools for performance-based design, including nonlinear pushover and dynamic earthquake analyses. The analysis engine is 64-bit and the product has the ability to run up to 8 analyses in parallel.

Performance Assessment

Perform3D includes a number of tools for measuring the response of model and assessing the behavior of the structure, including strain gage elements and deformation and strength capacity definitions on both elastic and inelastic components.

The limit state feature in Perform3D can be used to aggregate response data into demand-over-capacity ratios for ease of performance assessment.

Import and Export

Perform3D models can be exported from SAP2000 or ETABS and serve as a starting point for your Perform3D model.

CSI Perform3D (by Computers and Structures, Inc.) is a lifetime license, CSI Perform3D is a specialized nonlinear analysis and design software developed by Computers and Structures, Inc. (CSI). It is engineered to simulate the inelastic behavior of structures under earthquake loading, allowing structural engineers to assess performance beyond the elastic range. Perform3D is a powerful companion to CSI’s ETABS and SAP2000, providing advanced nonlinear modeling and performance-based design (PBD) capabilities.

⚙️ Key Features

• Nonlinear Analysis:
  Models nonlinear material behavior including steel, concrete, and masonry components.

• Performance-Based Design (PBD):
  Implements FEMA and ATC guidelines for structural performance objectives such as Immediate Occupancy (IO), Life Safety (LS), and Collapse Prevention (CP).

• Element Types:

  • Nonlinear frame elements

  • Shear walls with fiber models

  • Hinges and springs for capturing inelastic deformations

• Ground Motion Analysis:
  Direct integration of earthquake records for nonlinear time-history analysis.

• Failure Mechanisms Simulation:
  Predicts realistic yielding, cracking, buckling, and collapse behavior.

• Visualization Tools:
  Graphical representation of hinge formations, plastic rotations, and energy dissipation.

🎯 Applications

• Seismic performance evaluation of buildings and bridges

• Advanced nonlinear pushover and time-history analysis

• Retrofit and strengthening design studies

• Research in earthquake engineering and performance-based seismic design

💡 Benefits

• Provides engineers with insight into structural performance during strong earthquakes.

• Enables cost-effective retrofit strategies by pinpointing critical failure mechanisms.

• Bridges the gap between research-level nonlinear modeling and practical engineering applications.

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