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PENDULUM: 作品数：129被引量：219H指数：8; 导出分析报告; 相关领域：自动化与计算机技术更多>>; 相关作者：张红刘建峰党秋萍郑洁杨智锋更多>>; 相关机构：大连医科大学安徽医科大学陕西省中医药研究院枣庄市立医院更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划国家高技术研究发展计划中国博士后科学基金更多>>

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

Improvement of a pendulum-type apparatus for friction test of a contact lens to simulate the conditions of its actual usage: 《Biosurface and Biotribology》2024年第4期167-175,共9页Ryusuke Nakaoka Hiroko Iwashita Yuichi Hori Kiyoshi Mabuchi Toru Matsunaga Yuji Haishima Eiichi Yamamoto; Japan Agency for Medical Research and Development,Grant/Award Number:JP23mk0101192。; Friction between the contact lens(CL)and the corneal or conjunctival surfaces is considered one of key factors in triggering CL-associated adverse effects.However,the relationship between friction properties and these...; 关键词：frictional coefficient frictional property medical devices sliding friction SURFACE

Oscillation Analysis of a Bifilar Pendulum with Mathematica: 《World Journal of Mechanics》2024年第10期199-204,共6页Haiduke Sarafian; Utilizing a Computer Algebra System (CAS), namely MathematicaR, the characteristics of a bifilar disk-shaped pendulum have been studied. By applying the Lagrangian methodology, the disk’s motion equation is formulate...; 关键词：Bifilar Pendulum Oscillation Period ODE MATHEMATICA

Astral Actions on Allais’ Pendulum Apparently Inexplicable by Classical Factors: A Point of the Situation: 《Journal of Modern Physics》2024年第9期1375-1408,共34页Jean-Bernard Deloly; 1) The observation by Allais of the precession of pendulums from 1954 to 1960 highlighted regularities of astral origin an in-depth analysis of which showed that, apparently, no classical phenomenon can explain them. ...; 关键词：Allais Effect PENDULUM Lunisolar Influence Jupiter Influence Lunar and Solar Eclipses SYZYGIES SUNSPOTS Solar Cycles

THE LIMIT CYCLE BIFURCATIONS OF A WHIRLING PENDULUM WITH PIECEWISE SMOOTH PERTURBATIONS: 《Acta Mathematica Scientia》2024年第3期1115-1144,共30页杨纪华; supported by the Natural Science Foundation of Ningxia(2022AAC05044);the National Natural Science Foundation of China(12161069)。; This paper deals with the problem of limit cycles for the whirling pendulum equation x=y,y=sin x(cosx-r)under piecewise smooth perturbations of polynomials of cos x,sin x and y of degree n with the switching line x=0....; 关键词：whirling pendulum limit cycle Melnikov function Picard-Fuchs equation Chebyshev system

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

Inexplicable Multi-Annual Astral Action on the Precession of Allais Pendulum: An Influence of the Solar System (and Especially of Jupiter?): 《Journal of Modern Physics》2023年第6期953-988,共36页Jean-Bernard Deloly; Between 1954 and 1961, Allais conducted 6 one-month observations of the azimuth of the plane of oscillation of a pendulum installed in his laboratory. That of 1958 also implemented a second pendulum, identical to the ...; 关键词：Allais Effect PENDULUM Lunisolar Influence Jupiter Influence

Pendulum waves and basics of «geomechanical thermodynamics»: 《Geohazard Mechanics》2023年第1期38-52,共15页V.N.Oparin; support of Russian Foundation for Basic Research(project No.20-05-00051).; It is shown that modern achievements in the field of experimental and theoretical researches and developments of innovative measuring systems for monitoring of non-linear dynamic and kinematic characteristics allow to...; 关键词：Geomechanical thermodynamics Pendulum waves Energy approach Geomechanical and thermodynamic stages Geomechanical temperature Block-hierarchical structure

Kalman Filter and H_(∞)Filter Based Linear Quadratic Regulator for Furuta Pendulum: 《Computer Systems Science & Engineering》2022年第11期605-623,共19页N.Arulmozhi T.Aruldoss Albert Victorie; This paper deals with Furuta Pendulum(FP)or Rotary Inverted Pendulum(RIP),which is an under-actuated non-minimum unstable non-linear process.The process considered along with uncertainties which are unmodelled and ana...; 关键词：Furuta pendulum linear quadratic regulator kalman filter non-linear process two filter configurations

Optimal analytical and numerical approximations to the(un)forced(un)damped parametric pendulum oscillator被引量：1: 《Communications in Theoretical Physics》2022年第10期16-29,共14页Haifa A Alyousef M R Alharthi Alvaro H Salas S A El-Tantawy; The authors express their gratitude to Princess Nourah bint Abdulrahman University Researchers Supporting Project (Grant No. PNURSP2022R17);Taif University Researchers supporting project number (TURSP2020/275), Taif University, Taif, Saudi Arabia。; The(un)forced(un)damped parametric pendulum oscillator(PPO)is analyzed analytically and numerically using some simple,effective,and more accurate techniques.In the first technique,the ansatz method is employed for ana...; 关键词：parametric pendulum equation Ansatz method He’s frequency-amplitude principle He’s homotopy technique Krylov-Bogoliúbov Mitropolsky method the hybrid Padé-finite difference method

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