Super and sub-harmonic synchronization in generalized van der Pol oscillator

Result code in IS VaVaI

RIV/68378297:_____/19:00509311 - isvavai.cz

Result on the web

https://doi.org/10.1016/j.compstruc.2019.106103

DOI - Digital Object Identifier

10.1016/j.compstruc.2019.106103

Result language

angličtina

Original language name

Super and sub-harmonic synchronization in generalized van der Pol oscillator

Original language description

Effects of quasiperiodic beatings and sub- and super-harmonic synchronization reveal in plasma physics, optics, acoustics, neurophysiology, etc., but also very often in aero-elasticity of large slender engineering structures, e.g., bridge decks, towers, masts, high rise buildings, ropes, where these phenomena emerge in relation with vortex shedding effects. This applies mainly to quasiperiodic beatings that can be encountered especially in the lock-in regimes, when the vortex frequency becomes close to the structure eigenfrequency x0 with a small positive or negative detuning. This phenomenon has been thoroughly investigated for the van der Pol system in the previous study by the authors of this paper. However, experimental testing in a wind tunnel showed also other phenomena that can occur in the system resonance zone due to excitations with a multiple or rational fraction frequency leading to sub- or super-harmonic synchronization. All these effects are very dangerous from the viewpoint of reliability and safety of respective systems and hence, a robust theoretical background for design of adequate countermeasures are worthwhile to be developed. In this subsequent study the original sub- and supersynchronization effects are identified and quantified including assessment of their dynamic stability.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

GC17-26353J: Theoretical predictive models of interaction between varying and moving loads and bridges for structural health monitoring

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Computers and Structures

ISSN

0045-7949

e-ISSN

—

Volume of the periodical

224

Issue of the periodical within the volume

November

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

UNSP 106103

UT code for WoS article

000496341400001

EID of the result in the Scopus database

2-s2.0-85072640453