Development of nonlinear models of bolted joints for the identification of damping mechanisms through friction in gas turbines

Bolted joints are the most common interface in PWC’s gas turbine aeroengines and are believed to be a significant source of structural damping in the system. However, very little is known about the actual mechanisms at play in the joints. By conducting a systematic bolted flange research program, experimental data on bolted joints and engine test data will be collected and analytical models will be developed for model verification and validation purposes. The goal is to improve stiffness and damping prediction of components involving bolted joints in a way that can be incorporated into a larger full engine transient dynamic model. Successful modelling and analytical prediction of bolted flange joints dynamics response will enable PWC to design and manufacture cost-effective and highly efficient sustainable engines for the aerospace industries and will let Canada further enhance its competitiveness and develop its industrial and technological advantages.

Faculty Supervisor:

Mathias Legrand

Student:

Partner:

Pratt & Whitney Canada

Discipline:

Engineering

Sector:

Manufacturing; Mining; Professional, scientific and technical services

University:

McGill University

Program: