A damage constitutive model for the nonlinear mechanical behavior of C/SiC composites during mechanical cyclical loading/unloading

doi:10.1016/j.compositesa.2022.107072

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	A damage constitutive model for the nonlinear mechanical behavior of C/SiC composites during mechanical cyclical loading/unloading
	Niu ZB ; Chen SA ; Li Y ; Xiao P ; 杨正茂.; Tong YG ; Almeida RSM
发表期刊	COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
	2022-10
卷号	161 页码:107072
ISSN	1359-835X
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.
关键词	C/SiC composite Nonlinear mechanical behavior Damage mechanisms Damage constitutive model
学科领域	Engineering, Manufacturing ; Materials Science, Composites
DOI	10.1016/j.compositesa.2022.107072
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000863301500006
项目资助者	National Natural Science Foundation of China [52102122, 52173306] ; National Key Laboratory of Science and Technology on High-strength Structural Materials, Central South University [SYSJJ2021LWS01]
论文分区	一类
力学所作者排名	3+
RpAuthor	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.
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	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.[Niu, Z. B. 2.Chen, S. A.] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Peoples R China 3.Li, Y. 4.Xiao, P.] Cent South Univ, Natl Key Lab Sci & Technol High Strength Struct M, Changsha 410083, Peoples R China 5.[Yang, Z. M.] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 6.[Tong, Y. G.] Changsha Univ Sci & Technol, Coll Automobile & Mech Engn, Changsha, Peoples R China 7.[Almeida, R. S. M.] Univ Bremen, Adv Ceram, D-28359 Bremen, Germany
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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