{"title":"Model of Static Destruction of a Copper Conductor during Current Overload","authors":"A. I. Nedobitkov, B. M. Abdeyev","doi":"10.1134/S1052618824010084","DOIUrl":null,"url":null,"abstract":"<p>The results of experimental and theoretical studies of the formation of a crack in a copper conductor under the influence of current overload are presented. The conductor was examined using a JSM-6390L scanning electron microscope. A refined mathematical model of the static stress–strain state and destruction of a copper rod under conditions of inelastic bending at temperatures up to 700°C has been obtained. The limiting values of the bending moment and curvature of the copper conductor, causing its rupture after the formation of a crack, have been determined. The calculation algorithm has been brought to the final analytical dependences, allowing them to be used when conducting forensic fire-technical examination or designing electrical wiring.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":null,"pages":null},"PeriodicalIF":0.4000,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Machinery Manufacture and Reliability","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1052618824010084","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The results of experimental and theoretical studies of the formation of a crack in a copper conductor under the influence of current overload are presented. The conductor was examined using a JSM-6390L scanning electron microscope. A refined mathematical model of the static stress–strain state and destruction of a copper rod under conditions of inelastic bending at temperatures up to 700°C has been obtained. The limiting values of the bending moment and curvature of the copper conductor, causing its rupture after the formation of a crack, have been determined. The calculation algorithm has been brought to the final analytical dependences, allowing them to be used when conducting forensic fire-technical examination or designing electrical wiring.
期刊介绍：
Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.
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