摘要
讨论了接触面Goodman单元模型和Desai薄层单元模型的特点 ,介绍和分析了笔者提出的接触面薄层单元耦合本构模型。应用无厚度Goodman单元模型和笔者提出的薄层单元耦合本构模型分别对某高面板堆石坝进行了三维非线性有限元计算。计算结果显示 ,二者是有差异的 ,面板应力变形的差异更为明显 ,接触面模型和参数更为直接影响面板应力变形的计算结果。
Goodman′s zero thickness element and Desai′s thin layer element for interface model are discussed.A coupled constitutive model for interface thin layer element is proposed by auther.3 D FEM is executed separately based on Goodman′s and auther′s model.The computed results show:stress and displacement are differ greatly in CFRD,especily in concrete face.Interface model and their parematers directly effect on the computed stress and displacement of concrete face.
出处
《红水河》
2000年第4期12-15,共4页
Hongshui River
基金
"九五"国家重点攻关项目! (96-2 2 0 -0 1-0 3 -0 2 )
关键词
耦合本构模型
面板堆石坝
应力变形
接触面模型
interface,thin layer element, coupled constitutive model, CFRD, stress and displacemant
