On the Use of Condensation Models for Describing Highly Damped Multilayered Structures
AbstractThe use of condensed models is an alternative approach to describe multilayered structures and evaluate vibroacoustic indicators with reduced computational cost. This approach is particularly interesting in the context of adaptive multilayered structures, where condensed models can be used to determine the effective properties in reduced time whenever a configuration update is required. This study aims to determine the effective properties of a sandwich structure with a shape memory polymer (SMP) core. The mechanical and damping properties of the SMP used in this study are frequency and temperature dependent, and the sandwich structure can exhibit excellent damping capacity by adjusting the temperature of the SMP core. The effective properties are determined based on the conservation of the bending, shear (transverse) and extension (quasi-longitudinal) wavenumbers for a homogeneous and isotropic thin plate. Two highly damped configurations are studied: in one, the structural damping loss factor is 0.89 on average; in the other, 0.56. The discrepancy in the frequency responses shows that this approach is insufficient to treat sandwich structures with SMP core at high damping configurations.
How to Cite
Copyright on articles is held by the author(s). The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, a worldwide exclusive licence (or non-exclusive license for government employees) to the Publishers and its licensees in perpetuity, in all forms, formats and media (whether known now or created in the future)
i) to publish, reproduce, distribute, display and store the Contribution;
ii) to translate the Contribution into other languages, create adaptations, reprints, include within collections and create summaries, extracts and/or, abstracts of the Contribution;
iii) to exploit all subsidiary rights in the Contribution,
iv) to provide the inclusion of electronic links from the Contribution to third party material where-ever it may be located;
v) to licence any third party to do any or all of the above.