Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method
Complex yarns with helical wrapping structure show auxetic effect under axial tension and a wide perspective application. Experimental results suggested that initial helical angle was one of the most important structural parameters. However, the experimental method was limited and could not effectiv...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/16/1/122 |
| _version_ | 1797625367779868672 |
|---|---|
| author | Sai Liu Zhaoqun Du |
| author_facet | Sai Liu Zhaoqun Du |
| author_sort | Sai Liu |
| collection | DOAJ |
| description | Complex yarns with helical wrapping structure show auxetic effect under axial tension and a wide perspective application. Experimental results suggested that initial helical angle was one of the most important structural parameters. However, the experimental method was limited and could not effectively explain the deformation behavior or auxetic mechanism. A finite element model of the helical auxetic yarn was built and used to analyze the interactive relationship between the two components and the stress distribution mode. The effectiveness and accuracy of the model was first verified by comparing with the experimental results. The simulation results showed that the complex yarn with initial helical angle of 14.5° presented the maximum negative Poisson’s ratio of −2.5 under 5.0% axial strain. Both the contact property between the two components and the radial deformability of the elastic core filament were key factors of the auxetic property. When the contact surfaces were completely smooth and the friction coefficient μ was set to 0, the complex yarn presented non-auxetic behavior. When the Poisson’s ratio of the core filament was 0, the complex yarn showed greater auxetic effect. During the axial stretching, the tensile stress was mainly distributed in the wrap filament, which led to structural deformation and auxetic behavior. A pair of auxetic yarns showed pore effect and high expansion under axial strain. Thus, it may be necessary to consider new weaving structures and preparation methods to obtain the desired auxetic property and application of auxetic yarns. |
| first_indexed | 2024-03-11T09:55:34Z |
| format | Article |
| id | doaj.art-075d349a51d7446f9d8fef38948a1a91 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:55:34Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-075d349a51d7446f9d8fef38948a1a912023-11-16T15:47:18ZengMDPI AGMaterials1996-19442022-12-0116112210.3390/ma16010122Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element MethodSai Liu0Zhaoqun Du1College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou 310018, ChinaEngineering Research Center of Technical Textiles, Ministry of Education, Donghua University, Shanghai 201620, ChinaComplex yarns with helical wrapping structure show auxetic effect under axial tension and a wide perspective application. Experimental results suggested that initial helical angle was one of the most important structural parameters. However, the experimental method was limited and could not effectively explain the deformation behavior or auxetic mechanism. A finite element model of the helical auxetic yarn was built and used to analyze the interactive relationship between the two components and the stress distribution mode. The effectiveness and accuracy of the model was first verified by comparing with the experimental results. The simulation results showed that the complex yarn with initial helical angle of 14.5° presented the maximum negative Poisson’s ratio of −2.5 under 5.0% axial strain. Both the contact property between the two components and the radial deformability of the elastic core filament were key factors of the auxetic property. When the contact surfaces were completely smooth and the friction coefficient μ was set to 0, the complex yarn presented non-auxetic behavior. When the Poisson’s ratio of the core filament was 0, the complex yarn showed greater auxetic effect. During the axial stretching, the tensile stress was mainly distributed in the wrap filament, which led to structural deformation and auxetic behavior. A pair of auxetic yarns showed pore effect and high expansion under axial strain. Thus, it may be necessary to consider new weaving structures and preparation methods to obtain the desired auxetic property and application of auxetic yarns.https://www.mdpi.com/1996-1944/16/1/122helical auxetic yarnstensile behaviorfinite element modelPoisson’s ratio |
| spellingShingle | Sai Liu Zhaoqun Du Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method Materials helical auxetic yarns tensile behavior finite element model Poisson’s ratio |
| title | Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method |
| title_full | Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method |
| title_fullStr | Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method |
| title_full_unstemmed | Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method |
| title_short | Study on the Tensile Behavior of Helical Auxetic Yarns with Finite Element Method |
| title_sort | study on the tensile behavior of helical auxetic yarns with finite element method |
| topic | helical auxetic yarns tensile behavior finite element model Poisson’s ratio |
| url | https://www.mdpi.com/1996-1944/16/1/122 |
| work_keys_str_mv | AT sailiu studyonthetensilebehaviorofhelicalauxeticyarnswithfiniteelementmethod AT zhaoqundu studyonthetensilebehaviorofhelicalauxeticyarnswithfiniteelementmethod |