In this paper, the elliptic problems are discreted by linear elements, the finite element system are solved by PCG method.
本文用分片线性元离散椭圆型问题。用预处理共轭梯度法求解有限元方程。
This paper presents a study of linear stability in plane of cable-arch structure by using finite element approach with beam and cable elements.
本文应用有限单元法对索-拱杂交结构平面内线性稳定性研究。
The results show that constant boundary elements have higher accuracy than linear triangular finite elements when they have the same length of side.
结果表明，单元边长相同时，常数边界元比三角形线性有限元的精度要商。
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