{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,18]],"date-time":"2025-10-18T10:57:31Z","timestamp":1760785051159,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,3,25]],"date-time":"2022-03-25T00:00:00Z","timestamp":1648166400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Science and Higher Education in Poland","award":["DIALOG 0019\/DLG\/2019\/10"],"award-info":[{"award-number":["DIALOG 0019\/DLG\/2019\/10"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The subject of the model research contained in this paper is a new design solution of the energy harvesting system with a star-shaped structure of elastic elements and variable configuration. Numerical experiments focused mainly on the assessment of the configuration of elastic elements in the context of energy harvesting efficiency. The results of computer simulations were limited to zero initial conditions as it is the natural position of the static equilibrium. The article compares the energy efficiency for the selected range of the dimensionless excitation frequency. For this purpose, four cases of elastic element configurations were compared. The results are visualized based on the diagram of RMS voltage induced on piezoelectric electrodes, bifurcation diagrams, Lyapunov exponents, and Poincar\u00e9 maps, showing the impact of individual solutions on the efficiency of energy harvesting. The results of the simulations show that the harvester\u2019s efficiency ranges from 4 V to 20 V depending on the configuration and the frequency range of the excitation, but the design allows for a smooth adjustment to the given conditions.<\/jats:p>","DOI":"10.3390\/s22072518","type":"journal-article","created":{"date-parts":[[2022,3,27]],"date-time":"2022-03-27T21:31:25Z","timestamp":1648416685000},"page":"2518","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Nonlinear Dynamics of a Star-Shaped Structure and Variable Configuration of Elastic Elements for Energy Harvesting Applications"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2249-4059","authenticated-orcid":false,"given":"Jerzy","family":"Margielewicz","sequence":"first","affiliation":[{"name":"Faculty of Transport and Aviation Engineering, Silesian University of Technology, 40-019 Katowice, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2968-1626","authenticated-orcid":false,"given":"Damian","family":"G\u0105ska","sequence":"additional","affiliation":[{"name":"Faculty of Transport and Aviation Engineering, Silesian University of Technology, 40-019 Katowice, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9647-8345","authenticated-orcid":false,"given":"Grzegorz","family":"Litak","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8603-4647","authenticated-orcid":false,"given":"Piotr","family":"Wolszczak","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland"}]},{"given":"Carlo","family":"Trigona","sequence":"additional","affiliation":[{"name":"Dipartimento di Ingegneria Elettrica Elettronica ed Informatica, University of Catania, 95125 Catania, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2022,3,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1949","DOI":"10.24425\/amm.2018.125129","article-title":"Low-cycle fatigue characteristics of selected titanium, magnesium and aluminium alloys","volume":"63","author":"Junak","year":"2018","journal-title":"Arch. 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