{"title":"热塑性弹性体管在加载和卸载下受双轴拉应力的变形行为测量与分析","authors":"Sohta Kubo, Toshihiko Kuwabara, Takuya Sumiyama, Takaya Kobayashi, Kenji Furuichi, Chisato Nonomura","doi":"10.1007/s12289-023-01752-5","DOIUrl":null,"url":null,"abstract":"<div><h2>Abstract\n</h2><div><p>A material testing apparatus for measuring the biaxial deformation behavior of a polymer tube is developed to quantitatively evaluate the deformation behavior of polymeric materials. The testing apparatus can apply axial force and internal pressure to a tubular specimen. A noncontact strain measurement system, where the biaxial strain components and the radius of curvature in the axial direction of the specimen are continuously measured to control the stress path applied to the specimen, is also developed. Thermoplastic elastomer tubes with an outer diameter of 15 mm and a thickness of 2 mm are used as test samples. The samples are subjected to linear stress paths with stress ratios of <span>\\({\\sigma }_{\\phi }: {\\sigma }_{\\theta }=1:0, 4:1, 2:1, 4:3, 1:1, 3:4, 1:2, 1:4\\)</span>, and 0:1, where <span>\\({\\sigma }_{\\phi }\\)</span> and <span>\\({\\sigma }_{\\theta }\\)</span> are the axial and circumferential stress components, respectively, applied to the center of the bulging specimen. Biaxial stress–strain curves are measured for each linear stress path at a nearly constant logarithmic strain rate of 1 × 10<sup>–3</sup> s<sup>−1</sup>. The contours of equal plastic work plotted in the <span>\\({\\sigma }_{\\phi }-{\\sigma }_{\\theta }\\)</span> stress space show significant anisotropy of the test material. A material model for accurately reproducing both the work-hardening behavior and deformation behavior of the test samples is proposed.</p></div></div>","PeriodicalId":591,"journal":{"name":"International Journal of Material Forming","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Measurement and analysis of deformation behavior of thermoplastic elastomer tube subjected to biaxial tensile stress under loading and unloading\",\"authors\":\"Sohta Kubo, Toshihiko Kuwabara, Takuya Sumiyama, Takaya Kobayashi, Kenji Furuichi, Chisato Nonomura\",\"doi\":\"10.1007/s12289-023-01752-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h2>Abstract\\n</h2><div><p>A material testing apparatus for measuring the biaxial deformation behavior of a polymer tube is developed to quantitatively evaluate the deformation behavior of polymeric materials. The testing apparatus can apply axial force and internal pressure to a tubular specimen. A noncontact strain measurement system, where the biaxial strain components and the radius of curvature in the axial direction of the specimen are continuously measured to control the stress path applied to the specimen, is also developed. Thermoplastic elastomer tubes with an outer diameter of 15 mm and a thickness of 2 mm are used as test samples. The samples are subjected to linear stress paths with stress ratios of <span>\\\\({\\\\sigma }_{\\\\phi }: {\\\\sigma }_{\\\\theta }=1:0, 4:1, 2:1, 4:3, 1:1, 3:4, 1:2, 1:4\\\\)</span>, and 0:1, where <span>\\\\({\\\\sigma }_{\\\\phi }\\\\)</span> and <span>\\\\({\\\\sigma }_{\\\\theta }\\\\)</span> are the axial and circumferential stress components, respectively, applied to the center of the bulging specimen. Biaxial stress–strain curves are measured for each linear stress path at a nearly constant logarithmic strain rate of 1 × 10<sup>–3</sup> s<sup>−1</sup>. The contours of equal plastic work plotted in the <span>\\\\({\\\\sigma }_{\\\\phi }-{\\\\sigma }_{\\\\theta }\\\\)</span> stress space show significant anisotropy of the test material. A material model for accurately reproducing both the work-hardening behavior and deformation behavior of the test samples is proposed.</p></div></div>\",\"PeriodicalId\":591,\"journal\":{\"name\":\"International Journal of Material Forming\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2023-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Material Forming\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12289-023-01752-5\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MANUFACTURING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Material Forming","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12289-023-01752-5","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
Measurement and analysis of deformation behavior of thermoplastic elastomer tube subjected to biaxial tensile stress under loading and unloading
Abstract
A material testing apparatus for measuring the biaxial deformation behavior of a polymer tube is developed to quantitatively evaluate the deformation behavior of polymeric materials. The testing apparatus can apply axial force and internal pressure to a tubular specimen. A noncontact strain measurement system, where the biaxial strain components and the radius of curvature in the axial direction of the specimen are continuously measured to control the stress path applied to the specimen, is also developed. Thermoplastic elastomer tubes with an outer diameter of 15 mm and a thickness of 2 mm are used as test samples. The samples are subjected to linear stress paths with stress ratios of \({\sigma }_{\phi }: {\sigma }_{\theta }=1:0, 4:1, 2:1, 4:3, 1:1, 3:4, 1:2, 1:4\), and 0:1, where \({\sigma }_{\phi }\) and \({\sigma }_{\theta }\) are the axial and circumferential stress components, respectively, applied to the center of the bulging specimen. Biaxial stress–strain curves are measured for each linear stress path at a nearly constant logarithmic strain rate of 1 × 10–3 s−1. The contours of equal plastic work plotted in the \({\sigma }_{\phi }-{\sigma }_{\theta }\) stress space show significant anisotropy of the test material. A material model for accurately reproducing both the work-hardening behavior and deformation behavior of the test samples is proposed.
期刊介绍:
The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material.
The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations.
All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.