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Abstract
A review of the use of interaction equations as a means of quantifying the integrity of aerospace structures under combined loading is presented. The main methods of solution for the proportional reserve factor are discussed, with emphasis placed on present-day industry-standard numerical methods. Examples are presented that demonstrate the comparative ease with which interaction equations can now routinely be solved quickly and accurately. The application of this capability to the design of modern aircraft structures is reviewed and its usefulness as a complementary tool to finite element analysis is discussed.
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Notes on contributors
N S Bardell
Dr Nicholas Bardell is currently a Technical Specialist at GKN Aerospace Engineering Services based in Port Melbourne, Victoria, where he has worked for the past 9 years on a variety of civil and military aircraft projects. Prior to this, he worked in the UK as a stress analyst for BAe, Rolls-Royce, Aerostructures Hamble, and as a Lecturer in Aircraft Structures in the Department of Aeronautics and Astronautics at the University of Southampton. His professional affiliations include RPEQ, MRAeS and CEng. He has published over 40 papers on various aspects of structural analysis and modelling.