大行程筒式铅剪切阻尼器性能的有限元模拟与试验研究

发布时间：2018-03-31 07:03

本文选题：大行程筒式铅剪切阻尼器　切入点：耗能减震　出处：《工程抗震与加固改造》2017年06期

【摘要】：提出了一种大行程筒式铅剪切阻尼器,阐述了其基本构造及耗能原理。使用ABAQUS建立该阻尼器的实体模型,模拟其滞回特性,分析了阻尼器的四个设计参数对其耗能性能的影响,为设计提供参考。通过低周往复荷载试验,研究该阻尼器的滞回耗能性能。有限元分析和性能试验结果表明:该阻尼器的阻尼力与铅槽长度、轴径成线性关系,铅槽长度和轴径可作为阻尼器设计中提高阻尼力的稳定参数;铅槽厚度对阻尼器的挤压作用影响大,摩擦段长度对阻尼力中的摩擦力影响大,为提供稳定的阻尼力,在阻尼器的设计中,铅槽厚度与铅槽长度比值应小于0.25,摩擦段长度取阻尼器行程;阻尼器耗能能力较好,耗能性能稳定,能够满足结构耗能减震要求。
[Abstract]:In this paper, a large stroke cylinder type lead shear damper is proposed, and its basic structure and energy dissipation principle are expounded. The solid model of the damper is established by using ABAQUS, its hysteretic characteristics are simulated, and the influence of four design parameters of the damper on its energy dissipation performance is analyzed. The hysteretic energy dissipation performance of the damper is studied by low-cycle reciprocating load test. The results of finite element analysis and performance test show that the damping force of the damper is linearly related to the length and axis diameter of lead tank. The length and axis diameter of lead tank can be used as stability parameters to increase damping force in damper design, the thickness of lead tank has great influence on the extrusion of damper, and the length of friction section has great influence on friction force in damping force, so as to provide stable damping force. In the design of damper, the ratio of lead tank thickness to lead tank length should be less than 0.25, and the length of friction section should be taken as damper stroke.
【作者单位】：北京工业大学工程抗震与结构诊治北京市重点试验室;
【基金】：国家自然科学基金资助项目(51378039,51421005、91315301-03)
【分类号】：TU352.1

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