{"title":"摩擦特性对 2A10 铝合金棒材电磁冲击变形机理的影响","authors":"Xu Zhang, Kangjie Tang, Yingyu Wang, Dongying Dong","doi":"10.1108/ilt-05-2024-0154","DOIUrl":null,"url":null,"abstract":"<h3>Purpose</h3>\n<p>The purpose objective of this study is to identify the friction coefficient and friction effect in electromagnetic upsetting (EMU) high-speed forming process.</p><!--/ Abstract__block -->\n<h3>Design/methodology/approach</h3>\n<p>Based on numerical simulation and upsetting experiment of 2A10 aluminum alloy bar, the friction coefficient between contact surfaces is obtained by combining the fitting displacement distribution function and the electromagnetic-mechanical coupling numerical model, and the influence of friction effect is analyzed.</p><!--/ Abstract__block -->\n<h3>Findings</h3>\n<p>The maximum impact velocity and acceleration during EMU are 13.9 m/s and −3.3 × 106 m/s<sup>2</sup>, respectively, and the maximum strain rate is 7700 s<sup>−1</sup>. The functional distribution relationship between friction coefficient combination (FS, FD) and characteristic parameters [upper diameter (D1) and middle diameter (D2)] is established. The values of FS and FD are 0.1402 and 0.0931, respectively, and the maximum relative error is 2.39%. By analyzing the distribution of equivalent stress and strain, it is found that plastic deformation has obvious zoning characteristics and there is serious failure concentration in the strong shear zone.</p><!--/ Abstract__block -->\n<h3>Originality/value</h3>\n<p>Friction coefficient significantly affects stress or strain distributions in material forming process, but it is difficult to obtain friction coefficients through experimental tests in the high-speed forming process. In this paper, a multi-field coupling numerical model is proposed to determine friction coefficients and applied to the electromagnetic impact loading process (a high-speed forming process).</p><!--/ Abstract__block -->\n<h3>Peer review</h3>\n<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0154/</p><!--/ Abstract__block -->","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":"75 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The effect of friction characteristics on electromagnetic impact deformation mechanism of 2A10 aluminum alloy bars\",\"authors\":\"Xu Zhang, Kangjie Tang, Yingyu Wang, Dongying Dong\",\"doi\":\"10.1108/ilt-05-2024-0154\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Purpose</h3>\\n<p>The purpose objective of this study is to identify the friction coefficient and friction effect in electromagnetic upsetting (EMU) high-speed forming process.</p><!--/ Abstract__block -->\\n<h3>Design/methodology/approach</h3>\\n<p>Based on numerical simulation and upsetting experiment of 2A10 aluminum alloy bar, the friction coefficient between contact surfaces is obtained by combining the fitting displacement distribution function and the electromagnetic-mechanical coupling numerical model, and the influence of friction effect is analyzed.</p><!--/ Abstract__block -->\\n<h3>Findings</h3>\\n<p>The maximum impact velocity and acceleration during EMU are 13.9 m/s and −3.3 × 106 m/s<sup>2</sup>, respectively, and the maximum strain rate is 7700 s<sup>−1</sup>. The functional distribution relationship between friction coefficient combination (FS, FD) and characteristic parameters [upper diameter (D1) and middle diameter (D2)] is established. The values of FS and FD are 0.1402 and 0.0931, respectively, and the maximum relative error is 2.39%. By analyzing the distribution of equivalent stress and strain, it is found that plastic deformation has obvious zoning characteristics and there is serious failure concentration in the strong shear zone.</p><!--/ Abstract__block -->\\n<h3>Originality/value</h3>\\n<p>Friction coefficient significantly affects stress or strain distributions in material forming process, but it is difficult to obtain friction coefficients through experimental tests in the high-speed forming process. In this paper, a multi-field coupling numerical model is proposed to determine friction coefficients and applied to the electromagnetic impact loading process (a high-speed forming process).</p><!--/ Abstract__block -->\\n<h3>Peer review</h3>\\n<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0154/</p><!--/ Abstract__block -->\",\"PeriodicalId\":13523,\"journal\":{\"name\":\"Industrial Lubrication and Tribology\",\"volume\":\"75 1\",\"pages\":\"\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Industrial Lubrication and Tribology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1108/ilt-05-2024-0154\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial Lubrication and Tribology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1108/ilt-05-2024-0154","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
The effect of friction characteristics on electromagnetic impact deformation mechanism of 2A10 aluminum alloy bars
Purpose
The purpose objective of this study is to identify the friction coefficient and friction effect in electromagnetic upsetting (EMU) high-speed forming process.
Design/methodology/approach
Based on numerical simulation and upsetting experiment of 2A10 aluminum alloy bar, the friction coefficient between contact surfaces is obtained by combining the fitting displacement distribution function and the electromagnetic-mechanical coupling numerical model, and the influence of friction effect is analyzed.
Findings
The maximum impact velocity and acceleration during EMU are 13.9 m/s and −3.3 × 106 m/s2, respectively, and the maximum strain rate is 7700 s−1. The functional distribution relationship between friction coefficient combination (FS, FD) and characteristic parameters [upper diameter (D1) and middle diameter (D2)] is established. The values of FS and FD are 0.1402 and 0.0931, respectively, and the maximum relative error is 2.39%. By analyzing the distribution of equivalent stress and strain, it is found that plastic deformation has obvious zoning characteristics and there is serious failure concentration in the strong shear zone.
Originality/value
Friction coefficient significantly affects stress or strain distributions in material forming process, but it is difficult to obtain friction coefficients through experimental tests in the high-speed forming process. In this paper, a multi-field coupling numerical model is proposed to determine friction coefficients and applied to the electromagnetic impact loading process (a high-speed forming process).
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0154/
期刊介绍：
Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.
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