Results 21 to 30 of about 3,704,002 (295)

Limit, shakedown and ratchet analyses of defective pipeline under internal pressure and cyclic thermal loading [PDF]

open access: yes, 2011
In this study, the limit load, shakedown and ratchet limit of a defective pipeline subjected to constant internal pressure and a cyclic thermal gradient are analyzed.
Ure, James Michael   +3 more
core   +4 more sources

Experimentally corroborated model of pressure relaxation limit cycle oscillations in the vicinity of the transition to high confinement in tokamaks

open access: yesNuclear Fusion, 2023
An analytical formula systematically predicts the observed frequency of pressure relaxation limit cycle oscillations in the vicinity of the transition to high confinement in four tokamaks (JET, ASDEX Upgrade, COMPASS, Globus-M).
O. Grover   +16 more
doaj   +1 more source

Friction generated limit cycles [PDF]

open access: yesIEEE Transactions on Control Systems Technology, 2001
This paper treats limit cycles caused by friction. The goal has been to explain phenomena that have been observed experimentally in mechatronic systems. Experiments have shown that oscillations of qualitatively different types can be obtained simply by changing controller specifications. Stiction is important in some cases but not in others.
Ohlsson, Henrik, Åström, Karl Johan
openaire   +2 more sources

Features of dynamic processes in the “indentor – coating” system during tests on a tribometer

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2023
The features of a nonlinear model of the indenter-coating tribosystem of a tribometer are considered. It is shown that with an increase in the amplitude of harmonic perturbation, the dynamic system goes through the stage of doubling the cycle and passes ...
I. V. Kolesnikov   +3 more
doaj   +1 more source

Equivalent dimensionality reduction method of doubly‐fed induction generator model and discrimination of Hopf bifurcation type

open access: yesEnergy Science & Engineering, 2023
The strong coupling, multivariate, and nonlinear characteristics of the mathematical model of a doubly‐fed induction generator (DFIG) make it challenging to analyze the bifurcation category of the DFIG. Therefore, in this study, we developed a method for
Wei Chen   +4 more
doaj   +1 more source

Stability Analysis of Equilibrium Point and Limit Cycle of Two-Dimensional Nonlinear Dynamical Systems—A Tutorial

open access: yesApplied Sciences, 2023
The equilibrium state of a dynamical system can be divided into the equilibrium point and limit cycle. In this paper, the stability analysis of the equilibrium point and limit cycle of dynamical systems are presented through different and all possible ...
Bin Wei
doaj   +1 more source

Limit Cycles and Integrability of a Class of Quintic System

open access: yesMathematics, 2022
In this paper, a class of quintic systems is investigated. The first 13 focal values are computed with the aid of MATHEMATICA. Then the necessary conditions of integrability and linearizability are obtained and the sufficiency of every condition is ...
Yanli Tang, Dongmei Zhang, Feng Li
doaj   +1 more source

PROFIL MAHASISWA DALAM MEMPELAJARI MATERI LIMIT BARISAN PADA MATA KULIAH KALKULUS PEUBAH BANYAK [PDF]

open access: yes, 2022
Penelitian ini didasarkan pada banyaknya mahasiswa Prodi Pendidikan Matematika Universitas Bung Hatta yang gagal menyelesaikan soal Ujian Tengan Semester Kalkulus Peubah Banyak tentang limit barisan.
Vermana, Listy   +3 more
core   +1 more source

A novel gait generation method independent of target settling-time adjustment for underactuated limit cycle walking [PDF]

open access: yes, 2015
This paper proposes a novel gait generation method for surely achieving constraint on impact posture in limit cycle walking. First, we introduce an underactuated rimless wheel model without ankle-joint actuation and formulate a state-space realization of
Asano, Fumihiko
core   +1 more source

Canard Limit Cycle of the Holling-Tanner Model

open access: yesDiscrete Dynamics in Nature and Society, 2014
By using the singular perturbation theory on canard cycles, we investigate the canard phenomenon for the Holling-Tanner model with the intrinsic growth rate of the predator small enough.
Chongwu Zheng   +2 more
doaj   +1 more source

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