RotorLab+ is the primary interface for ROMAC rotordynamic, bearing, and seal analysis tools. This software suite allows the user to easily build component and rotordynamic system projects to perform various types of analyses for rotating machinery design and performance.

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RotorLab+ 4.2 now available

The latest version of our primary software suite (v4.2) includes the following new features and enhancements:

  • Multi-level shaft capabilities are now available.
  • A new multi-level shaft Turbine Engine example project is now available.
  • Full bearing coefficients calculated by THPAD and MAXBRG tilting pad bearing analyses can now be directly linked into Damped Mode Shapes Analyses.
  • Shaft auto-meshing can now be toggled on/off.
  • Individual components in both Assembly and API models can now be quickly enabled and disabled via checkboxes.
  • Log dec vs. cross-coupled stiffness analysis and plots are now available in the Assembly Workspace Damped Mode Shapes Analysis.
  • Flexible support cross-talk has been added for Forstab Damped Mode Shapes Analyses.
  • Improvements to shaft model visualizations and new visualization options.
  • User manuals for all codes in RotorLab+ are now available via the Help Menu.
  • General improvements to overall program stability.

v4.1 included the following new features and enhancements

The latest version of our primary software suite (v4.1) includes the following new features and enhancements:

  • New built-in materials for rotor models.
  • New Response Summary output for API analyses.
  • New “Real” Probe feature for API analyses.
  • Enhancements to plots and plotting options in all analyses.
  • Bug fixes for disk handling options, API Forced Response analyses, and other minor bugs reported in v4.0.
  • Improvements to analysis speeds and overall program stability.

RotorLab+ 4.0 Features

This workspace provides users with the ability to perform API audits in accordance with API 617 8th Ed., including automated runs of bearing and rotordynamic analyses for minimum and maximum design specifications as well as flexible graphing capabilities.

  • API Spec Check Workspace
  • New bearing, squeeze film damper, and seal codes MAXBRG, SQFDAMP, DamperSeal, andHybridSeal
  • Linear couplings and thrust bearings for assembly analyses
  • Copy projects between Assembly and API Workspaces
  • Project import and export via .zip files for sharing between colleagues
  • Example projects and tutorial information
  • New plotting options

Licensing Contact:

University of Virginia Licensing & Ventures Group
722 Preston Avenue, Suite 107
Charlottesville, VA 22903
(434) 924-2175


Marc Oettinger
UVA Licensing & Ventures Group
University of Virginia

Technical Contact:

University of Virginia
School of Engineering and Applied Science
ROMAC Laboratories
122 Engineer’s Way
P.O. Box 400746
Charlottesville, VA 22904


Brian Weaver
Department of Mechanical and Aerospace Engineering
School of Engineering & Applied Science
University of Virginia