Hysteretic behavior of improved Pall-typed frictional dampers

Hysteretic behavior of improved Pall-typed frictional dampers
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改进的颇尔型摩擦阻尼器的迟滞行为

DOI:
10.1016/j.engstruct.2005.03.010
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发表时间:
2005-07
影响因子:
5.5
通讯作者:
Martin Williams
Martin Williams
中科院分区:
工程技术2区
文献类型:
--
作者:
Wu Bin;Zhang Jigang;Ou Jinping;Martin Williams

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研制了一种结构简单的新型Pall摩擦阻尼器。对改进后的PFD(IPFD)和原PFD(OPFD)的结构细节、工作性能和阻尼力进行了比较。利用虚功原理进行的受力分析表明,两个阻尼器产生的阻力相同,摩擦力也相同。因此,IPFD复制了OPFD的机械性能,但在易于制造和组装方面提供了一些优势。采用考虑几何非线性的严格数值方法研究了PFDs(IPFDs或OPFDs)的滞回特性。数值结果表明,支撑的张力并不像通常假设的那样保持不变,而是在PFD滑动时显著增加。结果进行了比较,并验证了有限元分析,使用商用ANSYS程序。然后进行简化分析,以给出一个更清晰的洞察的几何非线性的来源,导致支撑力的增加。最后,与IPFD进行了验证实验,这证实了在前面的分析中确定的行为。
A new type of Pall frictional damper (PFD) with a simple configuration has been developed. The construction details, operation and damper force of the improved PFD (IPFD) are compared with those of the original PFD (OPFD). Force analyses using the virtual work principle show that the resisting forces generated by the two dampers are identical with identical frictional forces. Hence the IPFD replicates the mechanical properties of the OPFD, but offers some advantages in terms of ease of manufacture and assembly. The hysteretic behavior of PFDs (either IPFDs or OPFDs) is studied using a rigorous numerical method considering geometric nonlinearity. The numerical results show that the tension force of the brace does not remain constant as usually assumed but increases significantly when the PFD is sliding. The results are compared with and verified by finite element analyses using the commercially available ANSYS program. A simplified analysis is then performed to give a clearer insight into the source of the geometric nonlinearity which causes the increase of brace force. Finally, a validation experiment with IPFDs is carried out, which confirms the behavior identified in the preceding analyses.
DOI: 10.1193/1.1585419
发表时间: 1987-02
期刊: Earthquake Spectra
影响因子: 5
作者:
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DOI: 10.15554/pcij.11011980.38.61
发表时间: 1980-11
期刊: Pci Journal
影响因子: 1.1
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DOI: --
发表时间: 1982-06
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DOI: 10.2307/3618810
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