论文部分内容阅读
介绍了水—坝动力耦合的样条边界元—能量配点法,即对水域用样条边界元离散,对水—坝的接触面用能量配点法耦合,把坝体简化为变截面悬臂梁,在用能量配点法对边界处理后,用样条边界元计算坝体的振型及动力响应。用上述理论对唐山大地震进行计算,结果与实测值相差无几,此外,又计算了三角形重力坝3个振型,与文献结果相近.这种解决流—固耦合问题的新方法,其特点是:可以在微机上运算,输入数据少,可考虑水的可压缩性,精度可靠
The spline boundary element-energy collocation method for water-dam dynamic coupling is introduced, that is, the spline boundary element is discretized in the water area, the contact surface of the water-dam is coupled by the energy collocation method, the dam body is simplified as a variable cross-section cantilever beam, After dealing with the boundary by energy collocation method, the spline boundary element is used to calculate the mode shape and dynamic response of the dam. Using the above theory, the Tangshan earthquake was calculated and the results were almost the same as the measured values. In addition, three modes of the triangular gravity dam were calculated, which are similar to those in the literature. This new method of solving flow-solid coupling problem is characterized by that it can be operated on a microcomputer with less input data, water compressibility can be considered, and the accuracy is reliable