Articles with "duffing equations" as a keyword



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Periodic solutions of semilinear Duffing equations with impulsive effects

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Published in 2018 at "Journal of Mathematical Analysis and Applications"

DOI: 10.1016/j.jmaa.2018.07.008

Abstract: In this paper we are concerned with the existence of periodic solutions for semilinear Duffing equations with impulsive effects. Firstly for the autonomous one, basing on Poincar\'{e}-Birkhoff twist theorem, we prove the existence of infinitely… read more here.

Keywords: semilinear duffing; equations impulsive; solutions semilinear; periodic solutions ... See more keywords
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Detection the nonlinear ultrasonic signals based on modified Duffing equations

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Published in 2017 at "Results in physics"

DOI: 10.1016/j.rinp.2017.08.054

Abstract: Abstract The nonlinear ultrasonic signals, like second harmonic generation (SHG) signals, could reflect the nonlinearity of material induced by fatigue damage in nonlinear ultrasonic technique which are weak nonlinear signals and usually submerged by strong… read more here.

Keywords: shg signals; nonlinear ultrasonic; duffing equations; duffing equation ... See more keywords