INTERFACE DAMPING AT RIVETED JOINTS. PART I-THEORETICAL ANALYSIS
Abstract
A theoretical examination is made of potential structural damping increments obtainable by insertion of a linear visco-elastic interfacial layer between plates of riveted joints. Consideration is given to a lap joint having antisymmetry about its single rivet, and being subjected to harmonic longitudinal loading. Certain simplifying assumptions were made which effectively reduce the analysis to a one dimensional system. An expression is obtained for the energy dissipated in the layer per cycle of load. The magnitude of this dissipation was computed for a wide range of joint dimensions, dynamic properties of the layer, and rivet stiffnesses. It was found that as the thickness (or shear modulus) of the layer is varied, a maximum value of the energy dissipation occurs. The conditions for this maximum are examined, and a simple design rule is established whereby the maximum damping may be achieved in a joint using a given material. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1961
- Accession Number
- AD0270463
Entities
People
- D.c.g. Eaton
- D.j. Mead
Organizations
- University of Southampton