%0 Journal Article
%T GDS空心圆柱扭剪试验系统阻尼的测定<br>The damping determination of the gds hollow cylindrical torsional shear test system
%A 马倩倩
%A 刘保健
%A 韩珏
%A 黄俊
%A 解新妍&lt
%A br&gt
%A MA Qianqian
%A LIU Baojian
%A HAN Jue
%A HUANG Jun
%A XIE Xinyan
%J 铁道科学与工程学报
%D 2017
%X 通过GDS空心圆柱扭剪试验系统的动态三轴试验得到水试样的动应力和动应变时程曲线，采用传统的等效线性模型计算其阻尼比λ1。通过互相关函数法计算得到系统的阻尼比λ2，最后将λ1和λ2进行比较。研究结果表明：阻尼比随动应力幅值的增大而增大，并呈一定的线性关系即λ=kσd，且k的取值范围为4×10-5~7×10-5。<br>Through the dynamic triaxial test of the GDS hollow cylindrical torsional shear test system, the dynamic stress and dynamic strain process curve of water sample was obtained first. The system damping ratio λ1 was then calculated through the traditional equivalent linear model. The damping ratio of the system λ2 was calculated on the basis of the cross-correlation function method, and λ1 and λ2 were finally compared. The experimental result shows that the test damping ratio increases as the dynamic stress amplitude increases, and there is a certain linear relationship between them: λ=kσd and k is between 4×10-5 and 7×10-5
%K GDS空心圆柱扭剪试验
%K 动态三轴试验
%K 水试样
%K 阻尼比&lt
%K br&gt
%K GDS hollow cylindrical torsional shear test
%K dynamic triaxial test
%K water sample
%K damping ratio
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_317498