Energy Dissipation and Supplemental Damping
Lessons Learnt from device development and testing in large-scale structural tests

About the Webinar

This talk will discuss recent developments in seismic damping technologies, including devices that apply principles of metallic extrusion, viscous fluid damping, and tension-only bracing. Hybrid combinations of these individual damping elements can be used to generate energy dissipation mechanisms where initial stiffness, resistive force, and effective post-yield stiffness can be individually varied. Furthermore, by combining displacement-dependent and velocity-dependent response components within a single device, hybrid energy dissipation devices can be created that have an insensitivity to the type of ground motion encountered. This talk will cover component-level, sub-assembly and full-scale system-level dynamic testing, as well as some case-studies of the use a metallic extrusion device within three field structures.

Presenter

Geoff Rodgers is a Professor in Mechanical Engineering at the University of Canterbury in Christchurch, New Zealand. His research career has focused on developing novel seismic damping devices and implementation strategies to support low-damage structural design. Geoff is the Immediate Past President of the New Zealand Society for Earthquake Engineering, a Society seeking to promote and advance earthquake engineering in New Zealand and support the translation of research to practice. His prior research work has applied both computational and experimental studies, undertaking building instrumentation and monitoring, along with large-scale experimental testing in collaboration with universities in China, the US, and Canada.