Steel plate shear wall is one of the most effective dissipation systems which are commonly used in buildings. In order to improve the hysteretic behavior of shear panels, large perforation patterns may be applied, transforming the shear plate into a sort of grid systems, where plastic deformations are concentrated on specific internal link elements. This study investigates the behavior of grid systems loaded in shear where the internal links are created by cutting out internal parts, leaving rectangular tube–shaped link elements. The influence of internal link geometry on the cyclic performance of the systems is investigated experimentally. To this purpose, two specimens that varied in the width of links were fabricated and tested. The results indicate that any increase in the width of links leads to the growth of the ultimate strength, stiffness, and energy absorption capacity. Likewise, the stress distribution and fracture tendency of the tested specimens have been simulated by the finite element software (ABAQUS) and validated according to the experimental results. Based on finite element results, a suitable analytical formulation for the prediction of the shear strength at several shear deformation demands, considering the effect of thickness of the link, has been provided. Moreover, to improve the fracture tendency of the specimens, butterfly-shaped links, which varied in the middle length, were applied. The obtained results, which have been interpreted by considering the equivalent plastic strain value, prove that the shear panel behavior improves significantly when butterfly-shaped links are considered.

中文翻译：

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矩形管形连杆大穿孔钢剪力板的试验与数值研究

钢板剪力墙是建筑中常用的最有效的消散系统之一。为了改善剪切板的滞后行为，可以应用大穿孔模式，将剪切板转变为一种网格系统，其中塑性变形集中在特定的内部链接元件上。本研究调查了在剪切中加载的网格系统的行为，其中通过切除内部零件来创建内部链接，留下矩形管状链接元素。通过实验研究了内部链路几何形状对系统循环性能的影响。为此，制造并测试了两个链节宽度不同的试样。结果表明，连杆宽度的任何增加都会导致极限强度、刚度、和能量吸收能力。同样，通过有限元软件（ABAQUS）对试件的应力分布和断裂趋势进行了模拟，并根据实验结果进行了验证。基于有限元结果，考虑到连杆厚度的影响，提供了一个合适的分析公式，用于预测在几种剪切变形要求下的剪切强度。此外，为了改善试样的断裂倾向，采用了中间长度不同的蝴蝶形连杆。所得结果已通过考虑等效塑性应变值进行解释，证明当考虑蝴蝶形连杆时，剪切板的行为显着改善。通过有限元软件（ABAQUS）对试件的应力分布和断裂趋势进行了模拟，并根据实验结果进行了验证。基于有限元结果，考虑到连杆厚度的影响，提供了一个合适的分析公式，用于预测在几种剪切变形要求下的剪切强度。此外，为了改善试样的断裂倾向，采用了中间长度不同的蝴蝶形连杆。所得结果已通过考虑等效塑性应变值进行解释，证明当考虑蝴蝶形连杆时，剪切板的行为显着改善。通过有限元软件（ABAQUS）对试件的应力分布和断裂趋势进行了模拟，并根据实验结果进行了验证。基于有限元结果，考虑到连杆厚度的影响，提供了一个合适的分析公式，用于预测在几种剪切变形要求下的剪切强度。此外，为了改善试样的断裂倾向，采用了中间长度不同的蝴蝶形连杆。所得结果已通过考虑等效塑性应变值进行解释，证明当考虑蝴蝶形连杆时，剪切板的行为显着改善。