Marc软件在分析渗流场和渗流力中的应用

基于固定网格法,采用Marc软件中的死活单元技术和折减过渡单元的虚区高斯点渗透系数的方法对渗流场进行研究,用得到的结点水头值分析渗流力.对比水荷载分别作为面荷载和体荷载(渗流力)的工况,可以看出,虽然水荷载作为面荷载时,其在水平方向上的合力与水荷载作为体荷载时的水平向渗流力近似相等,但由于结构是变形体,合力大小相等的作用力如果分布形式不同,其最后的结果仍然有的较大差异.

Application of Marc software to analysis of seepage field and seepage force

The seepage field is analyzed by use of the active and inactive element technique and the technique of adjusting permeability coefficient at Gauss points in transitional elements,and the seepage force is analyzed with the water head at each node of the seepage field.Then,the water load is taken as the surface load and the volume load,respectively,and the comparison of the two loadcases shows that,when the water load is taken as the surface load,its resultant force in direction x is close to the seepage force in the same direction when it is taken as the volume load.However,there are still great differences when the resultant of the action forces is the same,but the distributed forms are different due to the fact that the structure is a deformed body.