Abstract
An innovative means to enhance the inherent damping in structures is provided by the designed-in incorporation of viscoelastic materials in joints. The joints, as envisioned, are double-lap shear joints that dissipate energy when worked in an axial direction. To better understand the relationship between structural stiffness and structural damping as a function of important physical parameters, a one-dimensional analysis of a typical joint was developed. A quasistatic analytical model based on the complex modulus description of viscoelastic behavior is utilized. Potential applications to parametric studies, preliminary design, and experimental data analysis are illustrated. The predictions correlate well with expected physical behavior, simplified approximate models, and available test data.
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