地震模拟振动台静力平衡装置的特性分析

英文篇名：STUDY ON THE GRAVITY BALANCE ELEMENT OF THE LARGE SCALE 3-DIMENSIONAL SEISMIC SIMULATING APPARATUS
中文刊名：地震工程与工程振动
英文刊名：Earthquake Engineering and Engineering Vibration
作者：胡宝生 ; 韩俊伟 ; 赵玉琢 ; 徐本洲
英文作者：Hu Baosheng Han Junwei(Institute of Engineering Mechanics ; State Seismological Bureau) Zhao Yuzhuo Xu Benzhou (Harbin Institute of Technology)
出版日期：1994-12-28
机构：国家地震局工程力学研究所 ,国家地震局工程力学研究所 ,哈尔滨工业大学 ,哈尔滨工业大学
年：1994
期：04
出版单位：地震工程与工程振动

摘要

我国自行研制的三向大型地震模拟振动台采用蓄能器加平衡缸,即蓄能器液压缸系统作为重力平衡装置。这种系统的研究一般仅把蓄能器看成—气体弹簧,没有考虑气体与环境热交换而产生的能量损失。用热时间常数描述气体与环境间的热交换特性是非常适合的。本文考虑容腔内油的压缩性,在线性范围内,对滞弹性模型(Anelastic Model)进行了修正,并以仿真和实验的方法对蓄能器液压缸系统的特性进行了分析。
The hydraulic motor-accumulator system is employed as a gravity balance element in the Large Scale 3-Dimension and 6 Freedom Seismic Simulating Apparatus designed by Institute of Engineering Mechanics. In the study of the hydraulic motor-accumulator system,it is generally simplified as a gas springs,instead of taking the energy loss caused by heat transfer between the charge gas and the accumulator walls into account. The thermal time constant can properly char-acterze the heat transfer. In this paper ,considering the compressibility of the hydraulic oil in the motor,the anelastic model is modified,and the characteristics of the hydraulic motor-accumulator system are analyzed with simulation and experiment.

引文

[1] Zener. Elasticity and Anelasticity of Metals. University of Chicago Press, 1984． pp.41-48．
[2] A. Pourmovahed and O. Otis,Effects of Thermal Damping on the Dynamic Response of a Hydraulic Motor-Accumulator System. Journal of Dynamic System.Measurement and Control.Trans. ASME.Vol. 106,March 1984,pp.21-25．