A majorized Newton-CG augmented Lagrangian-based finite element method for 3D restoration of geological models

作者：Tang, Peipei; Wang, Chengjing^*; Dai, Xiaoxia

来源：Computers & Geosciences, 2016, 89: 200-206.

DOI：10.1016/j.cageo.2016.01.013

• Frictionless contact problems
• Restoration of geological models
• Majorized augmented Lagrangian method

In this paper, we propose a majorized Newton-CG augmented Lagrangian-based finite element method for 3D elastic frictionless contact problems. In this scheme, we discretize the restoration problem via the finite element method and reformulate it to a constrained optimization problem. Then we apply the majorized Newton-CG augmented Lagrangian method to solve the optimization problem, which is very suitable for the ill-conditioned case. Numerical results demonstrate that the proposed method is a very efficient algorithm for various large-scale 3D restorations of geological models, especially for the restoration of geological models with complicated faults.

• 出版日期2016-4
• 单位西南交通大学; 浙江大学城市学院