Structures with Superelastic Shape Memory Alloy Stiffeners for Maximuj Damping and Energy Dissipation
Abstract
The report presents an approach to passive vibration control of thin-walled structures utilizing shape memory alloy (SMA) "stringers." The stringers represent prestressed superelastic SMA wires sliding within protective sleeves that are either embedded within the structure or bonded to its surface. The vibration control mechanism combines an effective elastic foundation reflecting the support provided by SMA wires to the structure with energy dissipation as a result of the hysteresis occurring in the wires. The second method of vibration control considered in the paper employs superelastic strings attached to the structure at discrete points and experiencing large-amplitude lateral vibrations as a result of near-resonant excitation conveyed from the structure. The potential advantage of this method is related to higher strain range in the strings resulting in more robust energy dissipation. As follows from numerical examples, the proposed methods offer significant passive damping and reductions in the vibration amplitudes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 15, 2010
- Accession Number
- ADA521961
Entities
People
- Victor Birman
Organizations
- Missouri University of Science and Technology