Zhou Binbin, Yuan Jie, Song Haichao, Zhou Liangfu, Chang Le, Zhou Changyu, Ye Cheng, Zhang Bojun
Engineering Technology Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing 210023, China.
Materials (Basel). 2023 Jul 27;16(15):5282. doi: 10.3390/ma16155282.
The current work reveals the influence of loading parameters on the crack growth behavior of a Zr/Ti/steel composite plate with a crack normal to the interface by using an experiment and the finite element method. The Chaboche model was first used to study cyclic plastic evolution in composite materials. The results reveal that an increase in , and can promote d/d; meanwhile, an increase in will reduce d/d The plastic strain accumulation results indicate that mainly contributes to the tensile strain and compressive stress after the first cycle. Additionally, increases the stress range and compression stress and greatly improves the plastic strain accumulation degree in subsequent loading cycles. The can significantly increase the stress amplitude and plastic strain accumulation level. When increases, the plastic strain accumulation increases a little, but the stress amplitude and compression stress decrease greatly. Furthermore, it is also found that the elastic-plastic mismatch also affects the plastic evolution, that is, strengthening or weakening the effect of the loading parameters.
当前的工作通过实验和有限元方法揭示了加载参数对裂纹垂直于界面的Zr/Ti/钢复合板裂纹扩展行为的影响。首先使用Chaboche模型研究复合材料中的循环塑性演化。结果表明， 、 和 的增加可促进d/d；同时， 的增加会降低d/d。塑性应变累积结果表明， 在第一个循环后主要导致拉伸应变和压缩应力。此外， 在随后的加载循环中增加了应力范围和压缩应力，并大大提高了塑性应变累积程度。 可显著增加应力幅值和塑性应变累积水平。当 增加时，塑性应变累积略有增加，但应力幅值和压缩应力大幅降低。此外，还发现弹塑性失配也会影响塑性演化，即增强或削弱加载参数的影响。
