Seminar
MECHANICS OF MACHINES AND MECHANISMS - MODELS AND MATHEMATICAL METHODS

PROGRAM

Plan rada Seminara Mehanika mašina i mehanizama - modeli i matematičke metode za OKTOBAR 2022.

UTORAK, 11.10.2022. u 17:00, sala 301f, Kneza Mihaila 36 i Live stream
Vitomir Racić, Faculty of Civil Engineerig, University of Belgrade, Serbia
EXPERIMENTAL MEASUREMENTS AND MODELLING OF HUMAN-INDUCED LOADING OF CIVIL ENGINEERING STRUCTURES
In civil engineering dynamics, human-induced vibrations have become an increasingly important serviceability and safety issue in the last decade. This area is rapidly gaining in importance due to strong trends towards increased slenderness and reduced mass, stiffness and damping of long-span floors, footbridges and assembly structures (e.g. grandstands and spectator galleries) which are by their very nature occupied and dynamically excited by people. The case of the excessive lateral sway of the infamous London Millennium Bridge under pedestrian crowd loading during its opening day in 2000 is the best publicly known illustration of the depth of the misunderstanding of what large civil engineering structures might do when dynamically excited by humans.
Prediction of dynamic loads induced by active people is one of the biggest challenges in structural design. Structural engineers understand other key dynamic loads, such as seismic and wind, comparatively well due to decades of research leading to comprehensive and robust guidance, but understanding of dynamic loads due to active people lags by several decades. The resulting inadequate guidance not only leads to economic costs and unnecessary carbon emission but also results in safety concerns related to human panic due to unexpected and unfamiliar structural motion.
The aim of this talk is to present multidisciplinary research on experimental characterisation and modelling of human-induced excitation of civil engineering structures. The research outputs are expected to provide a platform for a new generation of scientifically rational design guidance on dynamic excitation due to active individuals, groups and crowds.

Seminar Mehanika mašina i mehanizama - modeli i matematičke metode započeo je sa radom u junu 2018.god. Seminar se održava do dva puta mesečno, utorkom u periodu od 17.00 - 19.00 u Matematičkom institutu SANU.