桥梁用非线性粘滞阻尼器的性能改进研究

发布时间：2018-03-01 13:36

本文关键词： FLUENT软件组合式粘滞阻尼器速度指数阻尼系数　出处：《昆明理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：地震在我国大多数省份都发生过,有的省份还经常发生地震。同时,我国的沿海地区也是经常被台风影响。在建筑物抗震方面,桥梁建筑的抗震和抗风需求特别强烈。本文研究的就是工程中经常使用的非线性粘滞阻尼器,其主要内容有以下两点。(1)针对我国目前研究阻尼器性能只能通过实验手段为主的现状,引入FLUENT软件模拟实验的手段,提出了一个实验两种角度的仿真方法。使用新的研究方法,去研究了阻尼器结构对阻尼器输出参数的影响。初步证明了新的仿真方法可以为理论研究和实验手段之间提供一道桥梁。(2)利用新的仿真方法去研究改造过的组合式粘滞阻尼器,初步证实了阻尼器的活塞结构的改变能改变阻尼器的阻尼系数和速度指数。此结论为日后的阻尼器的结构优化提供了廉价的测试平台。
[Abstract]:Earthquakes have occurred in most provinces of our country, and in some provinces earthquakes have occurred frequently. At the same time, the coastal areas of our country are often affected by typhoons. In terms of earthquake resistance of buildings, The demand for earthquake resistance and wind resistance of bridge buildings is particularly strong. In this paper, nonlinear viscous dampers, which are often used in engineering, are studied. The main contents are as follows: (1) in view of the present situation that the performance of dampers can only be studied by experimental means in our country, a simulation method from two angles of experiment is put forward by introducing the means of simulation experiment with FLUENT software, and a new research method is used. It is proved that the new simulation method can provide a bridge between theoretical research and experimental means. (2) A new simulation method is used to study the modified composite viscous damper. It is preliminarily proved that the change of the piston structure of the damper can change the damping coefficient and velocity index of the damper. This conclusion provides a cheap test platform for the structural optimization of the damper in the future.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U441.3

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