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GJP-1程序是针对岩土力学课题而进行的空间非线性有限元分析的第一阶段成果,可用于含节理的三维弹性静力有限元分析。 GJP-1程序采用20节点等参元划分连续介质,而用18节点等参节理单元来模拟非连续面。本程序考虑了集中荷载、重力荷载、均布或不均布的作用方向为任意的面荷载、温度荷载,以及它们的各种组合作用。本程序允许各个单元有不同的材料性质。GJP-1程序具有自动划分网格,自动调整网格,和自动校核数据的功能,并提供波前法和分块三角分解解法供用户灵活选用,以便能在中小型计算机上求解比较大型的工程问题。本文列举了几个有理论解的算例,计算结果表明,本程序的计算精度是令人满意的。
The GJP-1 program is the first phase of the spatial non-linear finite element analysis for the subject of geotechnical mechanics, and can be used for joint finite element analysis of three-dimensional elastic statics. The GJP-1 program uses a 20-node isoparametric element to divide the continuous medium, and an 18-node isoparametric joint element to simulate the non-continuous surface. This program considers the concentrated load, gravity load, uniform or uneven distribution of the direction of the surface load, temperature load, and their various combinations. This procedure allows each unit to have different material properties. GJP-1 program has functions of automatically dividing grids, automatically adjusting grids, and automatically checking data. It also provides wavefront method and block triangular decomposition method for users to choose flexibly, so as to solve relatively large-scale computers on small and medium-sized computers. Engineering problems. This paper lists several examples of theoretical solutions. The calculation results show that the calculation accuracy of this program is satisfactory.