霍林生

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:土木工程系

学科:结构工程

办公地点:综合实验4号楼501

联系方式:0411-84706304

电子邮箱:lshuo@dlut.edu.cn

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Performance Estimation for Multi Degree of Freedom Structure with Negative Stiffness by A Bilinear Elastic Single Degree of Freedom System

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论文类型:会议论文

发表时间:2017-01-01

收录刊物:EI、CPCI-S

页面范围:2426-2428

摘要:Recently, the studies on the additional negative stiffness (NS) in structures have attracted many researchers. NS can mimics the structural yielding and reduce structural internal force. For civil structural design, multi degree of freedom (MDOF) structural performance should be estimated by single degree of freedom (SDOF) system according spectrum theory. Additional NS changes the structural property to be bilinear, which complicates the converting process from MDOF to SDOF. This paper presents a new method to approximately estimate the MDOF structure with NS in the 1st story (MNS1) by an approximate SDOF bilinear elastic system (ASBS). The accuracy of approximation from the MNS1 to the ASBS is studied by the sensitivity method of mode shapes in which the relative changes in structural mode shapes are related to the variation of stiffness. An eight-story numerical example is employed to illustrate the accuracy of approximation by the proposed method. The results show that the accuracy of approach is acceptable, and ASBS can estimate the response of the MNS1.