A novel interface element with asymmetric nodes and its application on concrete-faced rockfill dam

A novel interface element with asymmetric nodes and its application on concrete-faced rockfill dam
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新型非对称节点界面单元及其在面板堆石坝中的应用

DOI:
10.1016/j.compgeo.2016.12.013
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发表时间:
2017-05
影响因子:
5.3
通讯作者:
Bin Xu
Bin Xu
中科院分区:
工程技术2区
文献类型:
--
作者:
Yongqian Qu;Degao Zou;Xianjing Kong;Bin Xu

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在Goodman单元的基础上,引入Guyan减缩法,建立了非对称节点的接触面单元,通过在两个滑动面上设置不同的节点数,实现了有限元模型中土与结构之间的粗细网格过渡。高斯点的数目比传统的古德曼单元要多,保证了其精度。将该单元应用于混凝土面板堆石坝的动力弹塑性分析。结果表明,采用所构造的界面单元可以在不影响计算精度的情况下,显著减少单元数量。
Based on the Goodman element, the Guyan reduction method is introduced to develop the interface element with asymmetric nodes, which accomplishes the coarse-fine mesh transition between soil and structure in finite element models by providing a different number of nodes on the two sliding surfaces. The number of Gauss points is greater than that of the traditional Goodman element, which ensures its accuracy. The developed interface element is employed in the dynamic elasto-plastic analysis of CFRDs. The results indicate that the use of the constructed interface element can significantly decrease the number of elements with little influence on the accuracy.
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