欢迎光临《计算力学学报》官方网站!
基于非粘滞阻尼模型的超高层结构风效应分析
Wind Effect Analysis of Super-high Structure Based on Convolutional Non-Viscously Damped System
投稿时间:2016-11-30  修订日期:2017-01-22
DOI:
中文关键词:  阻尼  卷积型非粘滞阻尼  超高层建筑  风效应  微分求积算法
英文关键词:Damping  convolutional Non-viscously damping  super-high structure  wind effect  differential quadrature algorith
基金项目:“非粘滞阻尼力模型及其结构动力响应分析方法研究”
作者单位E-mail
吕蒙 哈尔滨工业大学深圳研究生院 lvmeng@cmhk.com. 
段忠东 哈尔滨工业大学深圳研究生院 duanzd@hit.edu.cn 
摘要点击次数: 98
全文下载次数: 
中文摘要:
      有限元方法中相对于对结构质量与刚度特性的描述,结构阻尼的描述仍具有较大的模糊性。随着新型建筑材料与复杂结构体系的发展,以及对计算机模拟要求的提高,阻尼作用的机理与相应阻尼模型的研究成为值得关注的问题。本文基于一种阻尼力与质点速度历程相关的非粘滞阻尼模型,采用微分求积求解算法,对一个大型复杂超高层建筑结构的风振响应进行了分析,并与常用的比例粘滞阻尼模型进行了对比。对非粘滞阻尼力模型系统的响应特征进行分析,特别是该模型的“松弛”效应对结构响应的影响。另外,作为将这种新阻尼模型应用于实际工程的一次探索,本文采用微分求积算法,建立了一套可将该阻尼模型及其求解算法嵌入通用有限元软件的求解系统,可用于复杂结构动力响应的分析。
英文摘要:
      To compare the modeling of structural mass and stiffness in the finite element method, structural damping characteristics is still ambiguous. With the development of new materials and structural systems, as well as the rising requirement for computer simulation, exploration of damping mechanism and development of new damping models are indispensable. Based on a non-viscous damping model, in which damping force relates with the velocity time history, and solving by a differential quadrature algorithm, the wind-induced response of a super-high building is computed and compared with the commonly used proportional viscous damping model. The damping behavior of the non-viscous model is analyzed, and a “relaxation effect” of the model to the responses is investigated. In addition, a solving procedure based on the differential quadrature algorithm is established to apply the non-viscous damping model to large-scale complex structures. This procedure is integrated into the commercial finite element software for analyzing structural dynamic responses.
  查看/发表评论  下载PDF阅读器
关闭
您是第3591996位访问者
版权所有:《计算力学学报》编辑部
本系统由 北京勤云科技发展有限公司设计