آزادسرو

Measurements of tangential stiffness and damping of mechanical joints:

Direct versus indirect contact resonance methods

By: MelihEriten, Chul-HeeLee ,Andreas A.Polycarpou

Abstract

Mechanical joints are integral to modern structures and provide coupling forces, moments and

Damping  between connected substructures. A widely used approach to modeling such structures with

Multiple joints is to use physical joint parameters of tangential stiffness and damping, which are

difficult to obtain. In this paper, two experimental methods, referred to as direct fretting loop and

indirect contact resonance methods are utilized to measure the tangential stiffness and damping of

aluminum joints. The stiffness values obtained from both methods are in good agreement with each

other and with the literature. Comparison and limitations of the two methods are presented

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