The Need
Modern gas turbines and compressors rely on bladed disks, which are highly sensitive to mistuning caused by manufacturing tolerances, wear, or damage. Existing modeling tools are fragmented, complex, and often limited to specific mistuning types. Industry will greatly benefit from a unified, efficient, and accurate modeling framework that can handle diverse mistuning scenarios using computationally feasible methods.

The Technology
This invention, developed by OSU researchers, introduces a novel algorithm for constructing reduced order models of bladed disks using only single-sector models. It employs a modified Craig-Bampton component mode synthesis (CB-CMS) approach that separates blade and disk dynamics while enabling accurate coupling through constraint modes. The method supports a wide range of mistuning types, including stiffness, geometric, damping, and contact mistuning, and enables an efficient statistical analysis in the reduced space.

Potential Commercial Applications
• Gas turbine design and analysis (aerospace and power generation)
• Compressor system modeling
• Predictive maintenance and digital twin platforms
• Simulation software integration (e.g., ANSYS, Siemens)
• Advanced vibration and fatigue analysis tools

Benefits/Advantages
• Supports multiple mistuning types in a single framework
• Uses only single-sector models, reducing computational cost
• More straightforward and flexible than current mistuning tools
• Enables accurate modeling of contact mistuning and shrouds
• Facilitates integration into existing simulation workflows