Experimental research and numerical analysis of Pall typed frictional dampers
Experimental research and numerical analysis of Pall typed frictional dampers
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发表时间：
2003
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通讯作者：
Ou Jinping
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作者：
Ou Jinping
通过试验和数值分析，研究了一种改进型Pall型摩擦阻尼器--T形芯板摩擦阻尼器的性能。整个试验包括摩擦垫系数试验和阻尼器滞回试验。试验结果表明，TFDs的滑移力可以根据摩擦垫的试验结果进行计算。滞回试验表明，TFDs滑移后滑移力基本不变，但支撑拉力显著增大。考虑几何非线性的数值计算结果与试验结果吻合较好。结果表明，不考虑Pall阻尼器几何非线性的简化方法可能导致结构设计不安全。
The behavior of an improved Pall typed frictional damper(PFD), the T shaped core plate frictional damper (TFD), is studied through tests and numerical analysis. The whole tests include frictional pad coefficient test and the damper hysteretic test. Test results show that the slip force of TFDs can be computed based on the test results of frictional pads. It is found from hysteretic test that the slip force of TFDs keeps stable, but the tension force of the brace increases remarkably after the slipping of TFDs. The results of numerical calculation considering geometry nolinearity agree with the test results. The results herein indicate that the simplified method without considering geometry nonlinearity of Pall damper may lead to unsafe structural design.