In spite of extensive experimental and numerical investigations on steel shear walls, many ambiguities regarding the behavior of these walls still exist. One of these unknown characteristics, which have been less researched, is the effect of cracks on system behavior. Experimental studies have reported fracture on the corner of Steel Plate Shear Walls (SPSW) during testing. Therefore, the present paper deals with seismic performance of cracked SPSW in linear and nonlinear zones. The extended finite element method based on cohesive crack approach is used in Finite Element (FE) modeling. FE results indicated that small initial crack does not have considerable effect on the behavior of SPSW. Since SPSW is ruptured due to crack with long length, it cannot be utilized as a lateral resisting system in high seismic zone although long initial crack does not have a considerable effect on R-factor. Moreover, the horizontal crack is more effective than vertical crack. In addition, a method for predicting the trend of the load–displacement diagram has been proposed. The obtained results show a high convergence of the proposed approach with the results of the finite element method.

中文翻译：

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数值和参数研究开裂钢板剪力墙 (SPSW)

尽管对钢剪力墙进行了广泛的实验和数值研究，但关于这些墙的行为仍然存在许多含糊之处。研究较少的这些未知特征之一是裂纹对系统行为的影响。实验研究报告了在测试过程中钢板剪力墙 (SPSW) 拐角处的断裂。因此，本文研究了线性和非线性区域中裂纹 SPSW 的抗震性能。在有限元 (FE) 建模中使用基于内聚裂纹方法的扩展有限元方法。有限元结果表明，小的初始裂纹对 SPSW 的行为没有显着影响。由于 SPSW 因裂缝较长而破裂，尽管长的初始裂缝对 R 因子没有显着影响，但它不能用作高地震带的侧向抗力系统。此外，水平裂缝比垂直裂缝更有效。此外，还提出了一种预测载荷位移图趋势的方法。获得的结果表明所提出的方法与有限元方法的结果高度收敛。