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首页> 外文期刊>Journal of Computational Physics >A fully coupled 3-D mixed finite element model of Biot consolidation
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A fully coupled 3-D mixed finite element model of Biot consolidation

机译:Biot固结的完全耦合3D混合有限元模型

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The numerical solution to the Biot equations of 3-D consolidation is still a challenging task because of the ill-conditioning of the resulting algebraic system and the instabilities that may affect the pore pressure solution. Recently new approaches have been advanced based on mixed formulations. In the present paper a fully coupled 3-D mixed finite element model is developed with the aim at alleviating the pore pressure numerical oscillations at the interface between materials with different permeabilities. A solution algorithm is implemented that takes advantage of the block structure of the discretized problem. The proposed model is verified against well-known analytical solutions and successfully experimented with in realistic applications of soil consolidation.
机译:3-D固结Biot方程的数值解仍然是一项艰巨的任务,因为所得代数系统的状态不佳以及可能会影响孔隙压力解的不稳定性。最近,基于混合配方已经提出了新的方法。在本文中,开发了一种完全耦合的3-D混合有限元模型,其目的是减轻具有不同渗透率的材料之间的界面处的孔隙压力数值振荡。实现了一种解决算法,该算法利用了离散问题的块结构。所提出的模型经过了著名的分析方法的验证,并在土壤固结的实际应用中成功进行了试验。

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