Naslov (eng)

Delay-resilient dynamics of a landslide mechanical model

Autor

Kostić, Srđan
Vasović, Nebojša

Publisher

Opis (eng)

Abstract: In present paper we analyze dynamics of a simple landslide mechanical model induced by the co-action of included time delay between the motion of the neighboring blocks and their coupling strength. Analyzed mechanical model represents an idealized interaction between accumulation and feeder slope at the accumulation coast. Dynamics of the proposed dynamical system is examined by applying standard bifurcation analysis: we derive explicit relations between time delay, spring stiffness and control parameters, while bifurcation curves are derived numerically. The results of the presented research indicate the onset of Hopf bifurcation, i.e. occurrence of instability for rather high values of the assumed time delay and spring stiffness, which indicates that slope instability occurs only in case when feeder and accumulation slope are observed as strongly coupled, but with a significant delay in interaction. Moreover, we showed that the increase of friction force along the sliding surface suppresses the effect of time delay, indicating that sliding surfaces with low friction parameters are prone to onset of instability.

Jezik

engleski

Datum

2022

Licenca

© All rights reserved

Predmet

Landslide, Time delay, Spring stiffness, Friction, Bifurcation

Deo kolekcije (1)

o:243

Institut za vodoprivredu "Jaroslav Černi"