Abstract This study presents an experimental and theoretical investigation into the bond-slip relation of a CFRP-to-steel bonded interface under cyclic loading. It was observed that the peak interfacial shear stress during cyclic loading was lower than that during monotonic loading. A damaged-plasticity-type bond-slip relation was developed to model the constitutive behavior of the bonded interface under quasi-static cyclic loading. This was further extended by developing a model for the damage accumulation rate to account for the damage evolution under fatigue cyclic loading. The predictions from the theoretical models were found to be conservative as compared to the experimental results.

中文翻译：

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FRP-钢结合界面的疲劳行为：基于损伤塑性模型的实验研究

摘要 本研究对循环载荷下 CFRP 与钢结合界面的结合滑移关系进行了实验和理论研究。观察到循环加载期间的峰值界面剪切应力低于单调加载期间的峰值界面剪切应力。开发了一种损伤塑性型粘结滑移关系来模拟准静态循环载荷下粘结界面的本构行为。通过开发损伤累积率模型以解释疲劳循环载荷下的损伤演变，进一步扩展了这一点。与实验结果相比，理论模型的预测被发现是保守的。