Galerkin’s method to solve a fractional time-delayed jerk oscillator

IF 2.2 3区 工程技术 Q2 MECHANICS Archive of Applied Mechanics Pub Date : 2023-06-30 DOI:10.1007/s00419-023-02455-8
Yusry O. El-Dib, Nasser S. Elgazery, Haifa A. Alyousef
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引用次数: 1

Abstract

An immediate analytic solution for the time-delayed fractional linear jerk oscillator is derived in the present study. The currently used method adheres to basic, easily implementable criteria. This proposed approach is based on transforming the time-delayed fractional oscillator to an equivalent oscillator with ordinary derivatives, which makes the solution procedure simple. The conversion process steps to an equivalent ordinary differential oscillator are displayed. Galerkin’s method is used to derive the jerk frequency. The good match between the analytic and numerical outcomes shows that the equivalent linearized mechanism leads to finding a satisfying and accurate solution. Stability discussion is conducted analytically and numerically.

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伽辽金求解分数阶时滞振荡振荡器的方法
本文给出了时滞分数阶线性振荡振荡器的直接解析解。目前使用的方法遵循基本的、易于实现的标准。该方法基于将延时分数振子转换为具有普通导数的等效振子,使得求解过程简单。转换过程步骤到一个等效的普通差分振荡器显示。采用伽辽金法推导了振动频率。解析结果与数值结果吻合较好,表明等效线性化机构可以得到满意的精确解。对稳定性进行了分析和数值讨论。
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来源期刊
CiteScore
4.40
自引率
10.70%
发文量
234
审稿时长
4-8 weeks
期刊介绍: Archive of Applied Mechanics serves as a platform to communicate original research of scholarly value in all branches of theoretical and applied mechanics, i.e., in solid and fluid mechanics, dynamics and vibrations. It focuses on continuum mechanics in general, structural mechanics, biomechanics, micro- and nano-mechanics as well as hydrodynamics. In particular, the following topics are emphasised: thermodynamics of materials, material modeling, multi-physics, mechanical properties of materials, homogenisation, phase transitions, fracture and damage mechanics, vibration, wave propagation experimental mechanics as well as machine learning techniques in the context of applied mechanics.
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