In this study, the dynamic behavior of a developed bypass viscous damper is evaluated. Bypass viscous damper has a flexible hose as an external orifice through which the inside fluid transfer from one side to the other side of the inner piston. Accordingly, the viscosity coefficient of the damper can be adjusted using geometrical dimensions of the hose. Moreover, the external orifice acts as a thermal compensator and alleviates viscous heating of the damper. According to experimental results, Computational Fluid Dynamic (CFD) model, a numerical formula and the simplified Maxwell model are found and assessed; therefore, the verification of numerical and computational models are evaluated for simulating. Also, a simplified procedure is proposed to design structures with bypass viscous dampers. The design procedure is applied to design an 8-story hospital structure with bypass viscous dampers, and it is compared with the same structure, which is designed with concentric braces and without dampers. Nonlinear time history analyses revealed that the hospital with viscous damper experiences less structural inelastic demands and fewer story accelerations which mean fewer demands on nonstructural elements. Moreover, seismic behaviors of nonstructural masonry claddings are also compared in the cases of hospital structure with and without dampers.

中文翻译：

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评估开发的旁路粘性阻尼器性能

在这项研究中，评估了开发的旁路粘性阻尼器的动态性能。旁路粘性阻尼器具有一个软管，作为外部孔口，内部流体通过该软管从内部活塞的一侧转移到另一侧。因此，可以使用软管的几何尺寸来调节阻尼器的粘度系数。此外，外部孔口充当热补偿器并减轻阻尼器的粘性加热。根据实验结果，找到并评估了计算流体动力学（CFD）模型，数值公式和简化的麦克斯韦模型；因此，对数值和计算模型的验证进行评估以进行仿真。另外，提出了一种简化的程序来设计带有旁路粘性阻尼器的结构。该设计程序用于设计带有旁路粘性阻尼器的8层医院结构，并与具有同心支撑和无阻尼器的相同结构进行比较。非线性时间历史分析表明，具有粘性阻尼器的医院对结构非弹性的需求较少，对于故事的加速度也较小，这意味着对非结构元素的需求较少。此外，在具有和不具有阻尼器的医院结构的情况下，还比较了非结构砌体覆层的抗震性能。非线性时程分析表明，具有阻尼器的医院对结构的非弹性要求较少，对故事的加速度也较小，这意味着对非结构元素的需求较少。此外，在具有和不具有阻尼器的医院结构的情况下，还比较了非结构砌体覆层的抗震性能。非线性时间历史分析表明，具有粘性阻尼器的医院对结构非弹性的需求较少，对于故事的加速度也较小，这意味着对非结构元素的需求较少。此外，在具有和不具有阻尼器的医院结构的情况下，还比较了非结构砌体覆层的抗震性能。