大型渡槽抗震分析中流体的位移有限元模式

Displacement-based fluid finite element for seismic-resistant analysis of large-scale aqueduct

利用弹性体与流体位移运动方程的相似性,将弹性体有限元模式直接用于流体有限元计算,使得整个渡槽流—固耦合系统具有统一的有限元计算模式。数值计算表明,这种流体有限元模式计算简便,易于工程应用,具有较好的计算精度,满足工程计算的要求。

Applying the analogy of motion equations between elasticbody and fluid,the finite element formulation of elastic body can be used in fluid computation,which makes the fluidstructure coupling system of the aqueduct has an unitary formulation for the seismic resistant computation.The examples of the numerical computation show that the displacementbased fluid finite element is straightforward and can be easily applied in practice with a good precision.