Modeling and evaluation of dynamic degradation behaviours of carbon fibre-reinforced epoxy composite shells
文献类型:期刊论文
作者 | Li H(李晖)1,4; Lv HY(吕海宇)4; Zhang, Tinan4; Han QK(韩清凯)4; Liu JG(刘金国)1; Xiong J(熊健)2; Guan, Zhongwei3 |
刊名 | Applied Mathematical Modelling |
出版日期 | 2022 |
卷号 | 104页码:21-33 |
ISSN号 | 0307-904X |
关键词 | Carbon fibres Composite shell Environmental degradation Dynamic degradation Degradation model |
产权排序 | 1 |
英文摘要 | In this study, a segmented degradation model was established for the first time to predict and evaluate the dynamic degradation characteristics of carbon fibre-reinforced epoxy composite (CFRC) shells accurately by considering temperature variations during heating, maintenance, and cooling. The model is based on the Reddy's high-order shear deformation theory, complex modulus method, and coefficient fitting approach. First, explicit expressions of material parameters and thermal expansion coefficients (TECs) in different thermal degradation stages were proposed, followed by the derivation of the differential equations to solve the structural dynamic degradation characteristics. Moreover, an identification method for the fitting coefficients of the CFRC material was described, which is based on experimental tests and iterative calculations of elastic moduli, loss factors, and TECs at different degradation time points in different thermal degradation stages. Finally, the natural frequencies, damping ratios, and time-domain responses were measured using a novel testing system for the dynamic degradation of specimens subjected to a pulse excitation load to validate the developed model. Theoretical and experimental results indicate that the natural frequencies decreased as the degradation time increases at the heating-up and temperature maintenance stages, whereas they increased at the cooling stage. However, an uptrend in the damping and response behaviours was observed in the first two stages, whereas a downtrend was recognized at the cooling stage. |
语种 | 英语 |
资助机构 | National Natural Science Foundation of China (granted No. 52175079, No. 51970530 and U1708257) ; Fundamental Research Funds for the Central Universities of China (granted No. N2103026, N180302004, N180703018, N180312012 and N180313006) ; National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology (granted No. 6142905192512) |
源URL | [http://ir.sia.cn/handle/173321/30096] |
专题 | 沈阳自动化研究所_空间自动化技术研究室 |
通讯作者 | Xiong J(熊健) |
作者单位 | 1.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China 2.Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, China 3.School of Engineering, University of Liverpool, Brownlow Street, Liverpool 4.School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China 5.L69 3GQ, United Kingdom |
推荐引用方式 GB/T 7714 | Li H,Lv HY,Zhang, Tinan,et al. Modeling and evaluation of dynamic degradation behaviours of carbon fibre-reinforced epoxy composite shells[J]. Applied Mathematical Modelling,2022,104:21-33. |
APA | Li H.,Lv HY.,Zhang, Tinan.,Han QK.,Liu JG.,...&Guan, Zhongwei.(2022).Modeling and evaluation of dynamic degradation behaviours of carbon fibre-reinforced epoxy composite shells.Applied Mathematical Modelling,104,21-33. |
MLA | Li H,et al."Modeling and evaluation of dynamic degradation behaviours of carbon fibre-reinforced epoxy composite shells".Applied Mathematical Modelling 104(2022):21-33. |
入库方式: OAI收割
来源:沈阳自动化研究所
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