【摘要】 本文从Ｐａｌｌ摩擦阻尼器四连杆机构的几何非线性变形特征出发，分析一种改进的Ｐａｌｌ摩擦阻尼器——Ｔ形芯板摩擦阻尼器的滞回特性以及支撑的受力特点。本文与不考虑几何非线性的简化计算方法得到完全不同的结论：支撑的拉力在阻尼器起滑后并不保持为一常数，而是呈显著增加趋势，支撑最大拉力可达起滑时的２～３倍。试验结果也充分验证了这一结论。这一结论意味着按传统简化计算方法设计的Ｐａｌｌ阻尼结构可能存在较大安全隐患。更多还原

【Abstract】 The hysteretic behavior of an improved Pall frictional damper (PFD) T-shaped cone plate frictional damper (TFD) is analyzed based on the geometrical nonlinearity of four-link mecha- nism of the damper. and corresponding verification test is carried out. The analysis and test results show that the tension force of the brace does not keep constant but increases remarkably after the slipping of TFED, and the maximum tension force can be as high as twice or even three times of tension force at initial slipping in some cases. The results herein indicate that the simplified method (see [4,8,9]) without considering geometrical nonlinearity of Pall damper may lead to unsafe structural design.更多还原