Keynote Speakers
Our keynote speakers are internationally recognised experts who will share their knowledge and experience drawn from their expertise in vibration and related fields at APVC 2025.
Associate Professor Vladislav Sorokin (The University of Auckland, NZ)
Abstract: In mechanical context, a system is typically referred to as parametrically excited when at least one of its parameters varies either with time or a spatial coordinate. Such systems have been exploited in a wide range of applications from vibration suppression to energy harvesting and response amplification. First, several unusual phenomena arising in systems with time varying parameters will be briefly presented, such as gas bubble sinking and heavy particles rising in vibrating fluid-filled volumes. Then dynamics of parametrically excited beams and pendulums will be discussed. A relatively simple approach to describe the dynamics will be presented. Then systems with spatially varying properties will be considered. These systems feature frequency bandgaps that are frequency rages in which elastic travelling waves attenuate providing exceptional sound and vibration mitigation performance. Finally some conclusions will be outlined.