In this study, a cost-effective and efficient Bar-fuse damper (BFD) modified model is proposed to prevent the buckling and increase the ductility of the concentrically braced frame (CBF) along the longitudinal axis of the diagonal brace to the gusset plate. The step-by-step design of the model is presented in such a way that can dissipate seismic energy by inhibiting the brace buckling. In order to validate the finite element (FE) modeling, the experimental outcomes of a previously tested BFD device and the conventional CBF sample have been compared separately with the FE analysis results using ABAQUS software. To achieve the research goal, the details of combining four different BFD models in connection with the bottom gusset plate are presented and then the behavior of each of the combined systems under cyclic loading is evaluated using finite element modeling. Numerical analysis of various failure modes of the mentioned models showed that model No. 4 has an acceptable performance. One of the features of the proposed modified model is that the axial force is completely eliminated and as a result, the energy-absorbing of the BFD device is obtained only by the flexural plastic hinge formation in its bar-fuse components. Finally, the comparison between the force-displacement diagram of the hybrid system that includes model No. 4 and the results of the conventional CBF shows that this model has an acceptable seismic behavior. In addition, the simplification of the proposed model and its components are easily replaceable upon inelastic energy dissipation. This advantage makes the model known as repairable systems.

在这项研究中，提出了一种具有成本效益和效率的Bar-fuse阻尼器（BFD）修改模型，以防止同心支撑框架（CBF）沿着对角撑板的纵轴到角撑板的挠曲并增加其延展性。该模型的分步设计以可以通过抑制支撑屈曲来消散地震能量的方式提出。为了验证有限元（FE）建模，已使用ABAQUS软件将先前测试过的BFD设备和常规CBF样品的实验结果分别与FE分析结果进行了比较。为了达到研究目的，详细介绍了结合底部角撑板组合四个不同BFD模型的详细信息，然后使用有限元建模评估了每个组合系统在循环载荷下的性能。对上述模型的各种失效模式的数值分析表明，4号模型具有可接受的性能。所提出的改进模型的特征之一是，轴向力被完全消除，结果，BFD装置的能量吸收仅通过弯曲的塑料铰链在其保险丝组件中获得。最后，将包含第4号模型的混合动力系统的力-位移图与常规CBF的结果进行比较，结果表明该模型具有可接受的地震行为。此外，所提出的模型及其组件的简化可在非弹性能量耗散时轻松替换。这一优势使模型被称为可修复系统。