Theoretical and computational results of a wave equation with variable exponent and time-dependent nonlinear damping
Sign Up to like & getrecommendations! Published in 2021 at "Arabian Journal of Mathematics"
DOI: 10.1007/s40065-021-00312-6
Abstract: We study the following wave equation $$u_{tt}-\Delta u+\alpha (t)\left| u_{t}\right| ^{m(\cdot )-2}u_{t}=0$$ with a nonlinear damping having a variable exponent m(x) and a time-dependent coefficient $$\alpha (t)$$ . We use the multiplier method to establish… read more here.
Keywords: time dependent; exponent time; wave equation; nonlinear damping ... See more keywords
Nonlinear damping properties of recycled aggregate concrete short columns under cyclic uniaxial compression
Sign Up to like & getrecommendations! Published in 2020 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2020.118445
Abstract: Abstract Although recycled aggregate concrete (RAC) has been studied intensively over past two decades, its damping property is still not analyzed sufficiently. In this paper, a nonlinear damping model for RAC prisms subjected to cyclic… read more here.
Keywords: uniaxial compression; nonlinear damping; rac; cyclic uniaxial ... See more keywords
Non-wind-induced nonlinear damping and stiffness on slender prisms: a forced vibration-pressure balance
Sign Up to like & getrecommendations! Published in 2020 at "Engineering Structures"
DOI: 10.1016/j.engstruct.2019.110107
Abstract: Abstract The non-wind-induced additional nonlinear damping and stiffness of a spring-suspension system (under wind-off conditions) would significantly influence the prediction of aeroelastic response. This study proposes a forced vibration technique to identify the non-wind-induced nonlinear… read more here.
Keywords: forced vibration; damping stiffness; nonlinear damping; wind induced ... See more keywords
Dynamic model order reduction of blisks with nonlinear damping coatings using amplitude dependent mistuning
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Non-Linear Mechanics"
DOI: 10.1016/j.ijnonlinmec.2019.01.016
Abstract: Abstract In this paper, a reduced order model is developed to simulate the dynamics of a bladed disk or blisk with nonlinear damping coatings adhered to its blades. The nonlinear forces exerted by these coatings… read more here.
Keywords: amplitude dependent; order; damping coatings; model ... See more keywords
Porous elastic system with nonlinear damping and sources terms
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Differential Equations"
DOI: 10.1016/j.jde.2017.11.006
Abstract: Abstract We study the long-time behavior of porous-elastic system, focusing on the interplay between nonlinear damping and source terms. The sources may represent restoring forces, but may also be focusing thus potentially amplifying the total… read more here.
Keywords: system; porous elastic; system nonlinear; elastic system ... See more keywords
Nonlinear Stiffness and Nonlinear Damping in Atomically Thin MoS2 Nanomechanical Resonators.
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DOI: 10.1021/acs.nanolett.2c02629
Abstract: We report on experimental measurements and quantitative analyses of nonlinear dynamic characteristics in ultimately thin nanomechanical resonators built upon single-layer, bilayer, and trilayer (1L, 2L, and 3L) molybdenum disulfide (MoS2) vibrating drumhead membranes. This synergistic… read more here.
Keywords: stiffness nonlinear; atomically thin; nanomechanical resonators; nonlinear damping ... See more keywords
Controlled nonlinear magnetic damping in spin-Hall nano-devices
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-13246-7
Abstract: Large-amplitude magnetization dynamics is substantially more complex compared to the low-amplitude linear regime, due to the inevitable emergence of nonlinearities. One of the fundamental nonlinear phenomena is the nonlinear damping enhancement, which imposes strict limitations… read more here.
Keywords: spin current; magnetization; nano devices; nonlinear damping ... See more keywords
Tuning nonlinear damping in graphene nanoresonators by parametric–direct internal resonance
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DOI: 10.1038/s41467-021-21334-w
Abstract: Mechanical sources of nonlinear damping play a central role in modern physics, from solid-state physics to thermodynamics. The microscopic theory of mechanical dissipation suggests that nonlinear damping of a resonant mode can be strongly enhanced… read more here.
Keywords: resonance; direct internal; graphene; nonlinear damping ... See more keywords
A general stability result for swelling porous elastic media with nonlinear damping
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DOI: 10.1080/00036811.2021.1979218
Abstract: We consider a swelling porous-elastic system with a single nonlinear damping in the elastic equation. Recently, Ramos et al. [Stability results for elastic porous media swelling with nonlinear damp... read more here.
Keywords: swelling porous; general stability; porous elastic; stability result ... See more keywords
Extended State Observer Based Robust Position Tracking Control Using Nonlinear Damping Gain for Quadrotors With External Disturbance
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3025969
Abstract: We propose an extended-state-observer (ESO)-based robust position tracking control method using nonlinear damping gain to improve the control performance under external disturbances and parameter uncertainties for quadrotors. The proposed method consists of an ESO and… read more here.
Keywords: external disturbance; disturbance; position tracking; state ... See more keywords
Nonlinear Damping Curve Control of Semi-Active Suspension Based on Improved Particle Swarm Optimization
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DOI: 10.1109/access.2022.3201867
Abstract: This paper studies the semi-active suspension damping control algorithm. The shortcomings of traditional damping control algorithms such as the sky-hook algorithm and the acceleration-driven damper algorithms are analyzed in this article. For the shortcomings of… read more here.
Keywords: semi active; active suspension; particle swarm; control ... See more keywords