A damage constitutive model for the nonlinear mechanical behavior of C/SiC composites during mechanical cyclical loading/unloading
文献类型：期刊论文
| 作者 | Niu ZB; Chen SA; Li Y; Xiao P; 杨正茂.; Tong YG; Almeida RSM |
| 刊名 | COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
 |
| 出版日期 | 2022-10 |
| 卷号 | 161页码:107072 |
| ISSN号 | 1359-835X |
| 关键词 | C/SiC composite Nonlinear mechanical behavior Damage mechanisms Damage constitutive model |
| DOI | 10.1016/j.compositesa.2022.107072 |
| 英文摘要 | In this study, the nonlinear mechanical behavior and corresponding damage mechanisms of C/SiC composites during cyclic loading/unloading tensile tests were studied. Besides, based on the composite microstructure and damage mechanisms, the damage evolution model and single fiber unit model are proposed to explain the stiffness degradation, inelastic deformation accumulation, and elastic deformation. According to the stiffness degradation law, the damage evolution model based on Weibull failure probability is established, which can fit damage-strain curves well. Additionally, the single fiber unit model considering the microscopic mechanisms of matrix cracking, interfacial debonding, and sliding is established. In the model, the stress distributions before and after loading and unloading are analyzed to obtain the elastic strain and inelastic strain formulas of the composite that can perfectly fit the experimental results (R-2 > 99.9%). Because the model reflects the deformation mechanisms of the composites in a much more simplified way, the deformation and damage law of the composite can be well predicted with basic macroscopic parameters such as the composition of the composite, the elastic modulus of the fiber, matrix, and composite, the strength of the matrix and the residual thermal stress of the matrix. |
| 学科主题 | Engineering, Manufacturing ; Materials Science, Composites |
| 分类号 | 一类 |
| 语种 | 英语 |
| WOS记录号 | WOS:000863301500006 |
| 资助机构 | National Natural Science Foundation of China [52102122, 52173306] ; National Key Laboratory of Science and Technology on High-strength Structural Materials, Central South University [SYSJJ2021LWS01] |
| 其他责任者 | Chen, SA (corresponding author), Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Peoples R China. ; Li, Y (corresponding author), Cent South Univ, Natl Key Lab Sci & Technol High Strength Struct M, Changsha 410083, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90155]  |
| 专题 | 宽域飞行工程科学与应用中心 |
| 作者单位 | 1.[Almeida, R. S. M.] Univ Bremen, Adv Ceram, D-28359 Bremen, Germany 2.[Tong, Y. G.] Changsha Univ Sci & Technol, Coll Automobile & Mech Engn, Changsha, Peoples R China 3.[Yang, Z. M.] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 4.Xiao, P.] Cent South Univ, Natl Key Lab Sci & Technol High Strength Struct M, Changsha 410083, Peoples R China 5.Li, Y. 6.Chen, S. A.] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Peoples R China 7.[Niu, Z. B. |
| 推荐引用方式 GB/T 7714 | Niu ZB,Chen SA,Li Y,et al. A damage constitutive model for the nonlinear mechanical behavior of C/SiC composites during mechanical cyclical loading/unloading[J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,2022,161:107072. |
| APA | Niu ZB.,Chen SA.,Li Y.,Xiao P.,杨正茂..,...&Almeida RSM.(2022).A damage constitutive model for the nonlinear mechanical behavior of C/SiC composites during mechanical cyclical loading/unloading.COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,161,107072. |
| MLA | Niu ZB,et al."A damage constitutive model for the nonlinear mechanical behavior of C/SiC composites during mechanical cyclical loading/unloading".COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 161(2022):107072. |
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来源：力学研究所
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