Abstract:
The seminar presents a multi-dimensional model recently formulated in the framework of continuum thermodynamics to simulate the complex behavior of Duhem-like solids, that is, solid bodies composed of rate-independent hysteretic material modeled via a rate-type constitutive equation. Particularly, the proposed model requires four material parameters: two govern the rate-independent hysteretic behavior without hardening, whereas the other two control the linear kinematic and isotropic hardening, respectively. A series of simulations will be carried out to show the responses provided by the model for different infinitesimal strain histories, hardening conditions, and values of the material parameters. Additionally, both numerical and experimental validations will be presented to demonstrate its accuracy.
Bio:
Nicolò Vaiana received the M.S. in Building Engineering and Architecture (110/110 magna cum laude) from the University of Calabria (Italy) in 2013. He obtained the Second Level International Master in Emerging Technologies for Construction (2015) and the Ph.D. in Structural, Geotechnical, and Seismic Engineering (2017) at the University of Naples Federico II (Italy). He spent one academic year (2015-2016) at the University of California at Berkeley (United States) as visiting student researcher under the guidance of Professor F.C. Filippou, and two academic years (2017-2019) at the University of Naples Federico II as post-doctoral researcher. In 2022, he was Visiting Professor at the ISAE-Supméca – Institut supérieur de mécanique de Paris (France) for a one-month period and, in 2025, he was Academic Visitor at the James Watt School of Engineering of the University of Glasgow (United Kingdom) for a two-month period. Currently, he is Tenure Track Assistant Professor in Solid and Structural Mechanics at the Department of Structures for Engineering and Architecture of the University of Naples Federico II (Italy). His main research fields are: computational dynamics, experimental dynamics, nonlinear dynamics, structural dynamics, vibration control.
Open to all. Attendees external to Imperial need to register by email.
Time: 1:00 pm