Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP
The carbon-fiber-reinforced polymer (CFRP) is a mainstream material for lightweight products from the end of the 20th century to the present day. Its compression molding process has obvious advantages in mass production. This paper attempts to establish the constitutive models of compression molding...
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MDPI AG
2020-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/10/2277 |
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| author | Jiuming Xie Shiyu Wang Zhongbao Cui Jin Wu Xuejun Zhou |
| author_facet | Jiuming Xie Shiyu Wang Zhongbao Cui Jin Wu Xuejun Zhou |
| author_sort | Jiuming Xie |
| collection | DOAJ |
| description | The carbon-fiber-reinforced polymer (CFRP) is a mainstream material for lightweight products from the end of the 20th century to the present day. Its compression molding process has obvious advantages in mass production. This paper attempts to establish the constitutive models of compression molding of the CFRP materials and study their mechanism. Based on anisotropic linear elastic mechanics, viscoelastic mechanics, and thermodynamics, as well as the Maxwell viscoelastic constitutive model, we first establish the constitutive model of thermorheologically simple CFRP materials (TSMs). Then, considering the influence of temperature on the initial stiffness and equilibrium stiffness, the concept of temperature stiffness coefficient is introduced, and the Cartier coordinate system is converted into a cylindrical coordinate system, thereby establishing the constitutive model of thermorheologically complex materials (TCMs) using the tensor form. Finally, by comparing to the structure of the Zocher model, the two constitutive models established in this study are verified. The research findings have important theoretical research significance for studying the compression molding mechanism of carbon fiber and further improving the quality of product molding. |
| first_indexed | 2024-03-10T19:48:21Z |
| format | Article |
| id | doaj.art-18ea1d2cc29f4021918378270bcb6daf |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:48:21Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-18ea1d2cc29f4021918378270bcb6daf2023-11-20T00:34:16ZengMDPI AGMaterials1996-19442020-05-011310227710.3390/ma13102277Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRPJiuming Xie0Shiyu Wang1Zhongbao Cui2Jin Wu3Xuejun Zhou4School of Mechanical Engineering, Tianjin University, Tianjin 300350, ChinaSchool of Mechanical Engineering, Tianjin University, Tianjin 300350, ChinaTianjin Sinotech Industry Co., Ltd., Tianjin 300350, ChinaSchool of Mechanical Engineering, Tianjin Sino-Germen University of Applied Sciences, Tianjin 300350, ChinaSchool of Mechanical Engineering, Tianjin Sino-Germen University of Applied Sciences, Tianjin 300350, ChinaThe carbon-fiber-reinforced polymer (CFRP) is a mainstream material for lightweight products from the end of the 20th century to the present day. Its compression molding process has obvious advantages in mass production. This paper attempts to establish the constitutive models of compression molding of the CFRP materials and study their mechanism. Based on anisotropic linear elastic mechanics, viscoelastic mechanics, and thermodynamics, as well as the Maxwell viscoelastic constitutive model, we first establish the constitutive model of thermorheologically simple CFRP materials (TSMs). Then, considering the influence of temperature on the initial stiffness and equilibrium stiffness, the concept of temperature stiffness coefficient is introduced, and the Cartier coordinate system is converted into a cylindrical coordinate system, thereby establishing the constitutive model of thermorheologically complex materials (TCMs) using the tensor form. Finally, by comparing to the structure of the Zocher model, the two constitutive models established in this study are verified. The research findings have important theoretical research significance for studying the compression molding mechanism of carbon fiber and further improving the quality of product molding.https://www.mdpi.com/1996-1944/13/10/2277CFRPcompression moldingconstitutive modelTSMstemperature stiffness coefficientTCMs |
| spellingShingle | Jiuming Xie Shiyu Wang Zhongbao Cui Jin Wu Xuejun Zhou Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP Materials CFRP compression molding constitutive model TSMs temperature stiffness coefficient TCMs |
| title | Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP |
| title_full | Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP |
| title_fullStr | Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP |
| title_full_unstemmed | Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP |
| title_short | Research on Anisotropic Viscoelastic Constitutive Model of Compression Molding for CFRP |
| title_sort | research on anisotropic viscoelastic constitutive model of compression molding for cfrp |
| topic | CFRP compression molding constitutive model TSMs temperature stiffness coefficient TCMs |
| url | https://www.mdpi.com/1996-1944/13/10/2277 |
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