About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
Presentation Title |
On the Cyclic Elastoplastic Shakedown Response of an Auxetic Structure |
Author(s) |
Natasha Vermaak, Shen Wang |
On-Site Speaker (Planned) |
Natasha Vermaak |
Abstract Scope |
Cyclic elastoplastic shakedown occurs when limited plastic deformation in the early stages of cycling gives rise to internal residual stresses that arrest the plastic response. As a result, purely elastic behavior is recovered upon further load cycling. This presentation is a study to map out the benefits of alternative resilient plastic design approaches that employ shakedown and that go beyond the traditional first-yield approaches for metallic structures in a variety of applications not limited by high cycle fatigue. The focus is on AA6061-T6 auxetic structures that exhibit effective negative Poisson's ratio. This unconventional behavior can improve energy absorption, anchoring capabilities, and failure resistance, including under cyclic loadings. The presentation highlights a case study of the full-field characterization and measurement of shakedown for an auxetic structure. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, Mechanical Properties, Modeling and Simulation |