{"title":"Numerical investigation of a fractal oscillator arising from the microbeams-based microelectromechanical system","authors":"Bin Chen , Junfeng Lu , Lei Chen","doi":"10.1016/j.aej.2025.04.015","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, we consider a electrically excited microbeams-based microelectromechanical system (MEMS) on a fractal time space. This MEMS problem can be modelled by a fractal nonlinear oscillator. A numerical approach by combining the fractal complex transformation and the spreading residue harmonic balance method is proposed for finding the approximations to the fractal vibration system. The approximated solutions and frequencies with high accuracy are given, and compared with the approximations by the existing methods such as Runge–Kutta method, energy balance method and Li-He’s modified homotopy perturbation method. Sensitivity analysis of the approximations concerning different amplitudes and other parameters is also investigated for understanding the numerical behaviour. Numerical results confirm the efficiency of the proposed approach over some existing methods.</div></div>","PeriodicalId":7484,"journal":{"name":"alexandria engineering journal","volume":"126 ","pages":"Pages 53-59"},"PeriodicalIF":6.2000,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"alexandria engineering journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S111001682500482X","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, we consider a electrically excited microbeams-based microelectromechanical system (MEMS) on a fractal time space. This MEMS problem can be modelled by a fractal nonlinear oscillator. A numerical approach by combining the fractal complex transformation and the spreading residue harmonic balance method is proposed for finding the approximations to the fractal vibration system. The approximated solutions and frequencies with high accuracy are given, and compared with the approximations by the existing methods such as Runge–Kutta method, energy balance method and Li-He’s modified homotopy perturbation method. Sensitivity analysis of the approximations concerning different amplitudes and other parameters is also investigated for understanding the numerical behaviour. Numerical results confirm the efficiency of the proposed approach over some existing methods.
期刊介绍:
Alexandria Engineering Journal is an international journal devoted to publishing high quality papers in the field of engineering and applied science. Alexandria Engineering Journal is cited in the Engineering Information Services (EIS) and the Chemical Abstracts (CA). The papers published in Alexandria Engineering Journal are grouped into five sections, according to the following classification:
• Mechanical, Production, Marine and Textile Engineering
• Electrical Engineering, Computer Science and Nuclear Engineering
• Civil and Architecture Engineering
• Chemical Engineering and Applied Sciences
• Environmental Engineering