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A computational
homogenization model for mechanical properties of natural
fiber reinforced cementitious composites with functionally
graded interphase
Rui Huang, Mengfei Han, Yongpeng Lei, Hui Wang, Qinxi Dong and Fangyu Han |
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Vol. 19 (2024), No. 5, 885–905
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Abstract |
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The physical properties of composites are largely affected by the interphase, making it cannot be neglected in the characterization of composite properties. To precisely describe the variation in interphase material properties as a transition region from matrix to reinforcement, the assumption of graded interphase is developed. However, studies on graded interphases, especially in natural fiber reinforced cementitious composites, are currently insufficient. This study aims to investigate the impact of graded interphases on such composites through proper computational modeling. A homogenization method based on the eigenfunction expansion variational (EEV) theory calculates equivalent elastic constants from specified displacement constraints, establishing the relationship between stresses and unknown displacement constraints. On the basis of verifying the mesh convergence of the mechanical model, the effects of different parameters on the mechanical properties of the composites are discussed through numerical simulations. The work provides a fundamental insight to the role of graded interphase in natural fiber reinforced cementitious composites, which is beneficial to their design and application. |
Keywords
composite materials, natural fibers reinforced cementitious
composites, randomness, graded interphase, mechanical
properties
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Milestones
Received: 22 May 2024
Revised: 5 October 2024
Accepted: 8 November 2024
Published: 25 December 2024
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Authors |
| Rui Huang | |
| School of Architecture and Civil
Engineering Xihua University Chengdu, 610039 China |
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| Mengfei Han | |
| School of Civil Engineering and
Architecture Hainan University Haikou, 570228 China |
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| Yongpeng Lei | |
| School of Civil Engineering and
Architecture Hainan University Haikou, 570228 China |
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| Hui Wang | |
| School of Civil Engineering and
Architecture Hainan University Haikou, 570228 China |
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| Qinxi Dong | |
| School of Civil Engineering and
Architecture Hainan University Haikou, 570228 China |
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| Fangyu Han | |
| Jiangsu Sobute New Materials Co,
Ltd. Nanjing, 211103 China |
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| © 2024 MSP (Mathematical Sciences Publishers). |
