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Partial Solution Operator Discretization-Based Methods for Efficiently Computing Least-Damped Eigenvalues of Large Time Delayed Power Systems: 《CSEE Journal of Power and Energy Systems》2025年第2期671-682,共12页Hua Ye Xiaofan Jia Muyang Liu Yutian Liu Sicong Zhang; supported in part by the National Natural Science Foundation of China(No.51677107,52077126)。; To investigate impact of time delays on the small signal stability of power systems, the least-damped eigenvalues with the smallest damping ratios have been calculated by eigen-analysis methods based on Solution Opera...; 关键词：Eigenvalue analysis low frequency oscillation Schur complement decomposition small signal stability solution operator discretization spectral discretization time delay wide-area measurement system

Seismic design of variable cross-section damped steel support frame for post equipment: 《Earthquake Engineering and Engineering Vibration》2025年第1期155-167,共13页Yang Zhenyu Ma Yuhong Zhao Guifeng Feng Zhiwei Fu Mingyang; Guangdong Basic and Applied Basic Research Foundation under Grant Nos.2022A1515110561 and 2023A1515010072;Natural Science Foundation of China under Grant Nos.52308488 and 52378499。; High-voltage electrical post equipment is generally installed on steel supports,which amplifies the seismic inputs and degrades the seismic performance of equipment.This study proposed a variable cross-section damped ...; 关键词：electrical post equipment steel support frame passive control seismic performance upgrading

Study of a Viscoelastic PMMA String in a Damped Pendulum: 《Journal of Applied Mathematics and Physics》2025年第2期664-675,共12页Karla Yanín Guerra Susana Orozco Alejandro Sánchez; The viscoelastic behavior of polymer optical fibers has garnered increasing interest due to their application as fiber sensors. A common technique for determining the storage and loss modulus of optical fibers involve...; 关键词：Damped Pendulum EXTRAPOLATION Polymethyl-Methacrylate Viscoelastic Material Complex Young’s Modulus Loss Factor

Overcoming bandwidth limitations in space-coiled acoustic metamaterials through inclined perforated plate design: 《Chinese Physics B》2025年第1期374-379,共6页Jixin Liu Fengmin Wu Ting Li Junjun Wang Xinye Zou Dong Zhang; Project supported by the National Key Research and Development Program of China(Grant No.2022YFB3204303);the National Natural Science Foundation of China(Grant No.11934009);the Fundamental Research Funds for the Central Universities(Grant No.020414380195);the Foundation of State Key Laboratory of Ultrasound in Medicine and Engineering(Grant No.2022KFKT021)。; Traditional space-coiled acoustic metamaterials have been widely used in the fields of low-frequency sound absorption and noise reduction.However,they have limitations in terms of low-frequency absorption bandwidth,an...; 关键词：METAMATERIALS composite structure over-damped modes coupling sound absorption

Multiple Periodic Solution for a Class of Damped Vibration System: 《Journal of Applied Mathematics and Physics》2024年第12期4291-4300,共10页Zihan Zhang Yuanhao Wang Guanggang Liu; In this paper, we consider a class of damped vibration systems with super-quadratic potential. We obtain at least two nonzero periodic solutions through the minimization method and Morse theory. Moreover, if the poten...; 关键词：Damped Vibration Problems Morse Theory Critical Group Morse Index Minimization Method

Existence of Global Attractor for Weakly Damped FDS Nonlinear Wave Equations: 《Annals of Applied Mathematics》2024年第4期333-345,共13页Boling Guo Ying Zhang; The paper investigates the well-posedness of global solutions and the existence of global attractors for weakly damped FDS nonlinear wave equations.It establishes the well-posedness of weak solutions using Galerkin ap...; 关键词：Global attractors a priori estimate FDS nonlinear wave equations

ON THE CAUCHY PROBLEM FOR THE GENERALIZED BOUSSINESQ EQUATION WITH A DAMPED TERM: 《Acta Mathematica Scientia》2024年第5期1766-1786,共21页Xiao SU Shubin WANG; supported by the National Natural Science Foundation of China(12301272);the Natural Science Foundation of Henan(202300410109);the Cultivation Programme for Young Backbone Teachers in Henan University of Technology,and the Innovative Funds Plan of Henan University of Technology(2020ZKCJ09).; This paper is devoted to the Cauchy problem for the generalized damped Boussinesq equation with a nonlinear source term in the natural energy space.With the help of linear time-space estimates,we establish the local e...; 关键词：damped Boussinesq equation Cauchy problem global solutions BLOW-UP

A reweighted damped singular spectrum analysis method for robust seismic noise suppression: 《Petroleum Science》2024年第3期1671-1682,共12页Wei-Lin Huang Yan-Xin Zhou Yang Zhou Wei-Jie Liu Ji-Dong Li; supported by the National Natural Science Foundation of China under grant no.42374133;the Beijing Nova Program under grant no.2022056;the Fundamental Research Funds for the Central Universities under grant no.2462020YXZZ006;the Young Elite Scientists Sponsorship Program by CAST(YESS)under grant no.2018QNRC001。; (Multichannel)Singular spectrum analysis is considered as one of the most effective methods for seismic incoherent noise suppression.It utilizes the low-rank feature of seismic signal and regards the noise suppression...; 关键词：Singular spectrum analysis Damping operator Seismic erratic noise Seismic signal processing Robust low-rank reconstruction

Multiple scales method for analyzing a forced damped rotational pendulum oscillatorwithgallows: 《Communications in Theoretical Physics》2024年第5期58-67,共10页Haifa A Alyousef Alvaro H Salas B M Alotaibi S A El-Tantawy; funded by the Deanship of Scientific Research,Princess Nourah bint Abdulrahman University,through the Program of Research Project Funding After Publication,grant No(44-PRFA-P-107).; This study reports the analytical solution for a generalized rotational pendulum system with gallows and periodic excited forces.The multiple scales method(MSM)is applied to solve the proposed problem.Several types of...; 关键词：rotational pendulum system multiple scales method approximate solution damped oscillations forced pendulum with gallows he-multiple scales method

On Two Types of Stability of Solutions to a Pair of Damped Coupled Nonlinear Evolution Equations: 《Advances in Pure Mathematics》2024年第5期354-366,共13页Mark Jones; The stability of a set of spatially constant plane wave solutions to a pair of damped coupled nonlinear Schrödinger evolution equations is considered. The equations could model physical phenomena arising in fluid dyna...; 关键词：Nonlinear Schrödinger Equation STABILITY Capillary-Gravity Waves

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