Results 21 to 30 of about 203,445 (282)

Nonlinear input/output analysis: application to boundary layer transition [PDF]

open access: yes, 2020
We extend linear input/output (resolvent) analysis to take into account nonlinear triadic interactions by considering a finite number of harmonics in the frequency domain using the harmonic balance method.
Colonius, Tim   +2 more
core   +2 more sources

The spreading residue harmonic balance method for studying the doubly clamped beam-type N/MEMS subjected to the van der Waals attraction

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
Since the doubly clamped beam-type N/MEMS subjected to the van der Waals attraction is transformed into a mathematical model through Galerkin method, which is a nonlinear differential equation, the spreading residue harmonic balance method is introduced ...
YH Qian, JL Pan, Y Qiang, JS Wang
doaj   +1 more source

Free vibration analysis of nonlinear axially loaded beams using a modified harmonic balance method

open access: yesPartial Differential Equations in Applied Mathematics, 2022
The conventional harmonic balance method utilizes a numerical approach for solving a set of nonlinear algebraic equations to identify the unknown coefficients.
M. Wali Ullah   +2 more
doaj   +1 more source

Trajectory Generation for Stair Ascent Walking using Rayleigh Oscillator [PDF]

open access: yes, 2013
This paper describes a trajectory generation technique for stair-ascent walking. The knee, hip and ankle joint trajectory during stair ascent are generated using mutually coupled, nonlinear oscillators.
Afzal, T.   +2 more
core   +3 more sources

Simulation and Automated Modeling of Microwave Circuits: State-of-the-Art and Emerging Trends

open access: yesIEEE Journal of Microwaves, 2021
Microwave modeling and simulation are essential to designing microwave circuits and systems. Although fundamental concepts and approaches for modeling and simulation are mature, the drive to higher frequencies, tighter design margins, and more ...
Qi-Jun Zhang   +4 more
doaj   +1 more source

Time-domain harmonic balance method for aerodynamic and aeroelastic simulations of turbomachinery flows [PDF]

open access: yes, 2013
A time-domain Harmonic Balance method is applied to simulate the blade row interactions and vibrations of state- of-the-art industrial turbomachinery configurations. The present harmonic balance approach is a time-integration scheme that turns a periodic
Besicovitch A.S.   +5 more
core   +1 more source

Harmonic balance surrogate-based immunity modeling of a nonlinear analog circuit [PDF]

open access: yes, 2013
A novel harmonic balance surrogate-based technique to create fast and accurate behavioral models predicting, in the early design stage, the performance of nonlinear analog devices during immunity tests is presented.
Couckuyt, Ivo   +6 more
core   +2 more sources

Unrestricted Harmonic Balance

open access: yesZeitschrift für Naturforschung A, 1983
The method of Unrestricted Harmonic Balance (UHB) as exposed and applied to purely timedependent systems, stiff systems, and chemical waves in the preceding 3 papers is extended to the case of transcendental functions. So, e.g., exponential functions even in mass action kinetics systems occur, if a wider range of temperature is considered as is the ...
openaire   +2 more sources

Highly Accurate Analytical Approximate Solutions of the Electrostatically Actuated Parallel Plates

open access: yesIEEE Access, 2023
This paper is concerned with highly accurate analytical approximate solutions to dynamic oscillation of the parallel-plates model of an electrostatic micro-actuator.
W. J. Liu, X. Q. Zhao
doaj   +1 more source

Assessment of thermal instabilities and oscillations in multifinger heterojunction bipolar transistors through a harmonic-balance-based CAD-oriented dynamic stability analysis technique [PDF]

open access: yes, 2009
We present a novel analysis of thermal instabilities and oscillations in multifinger heterojunction bipolar transistors (HBTs), based on a harmonic-balance computer-aided-design (CAD)-oriented approach to the dynamic stability assessment.
Bonani, Fabrizio   +3 more
core   +1 more source

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