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。
This paper deals with asymptotic behaviour of finite-dimensional contact elements of infinite-dimensional linear systems. In particular. the analytical expression of the asymptotic solutions is given.
本文通过简洁而又直观的方法讨论了线性情形时的有限维接触无的渐近行为，特别地，给出了渐近解的表达式。
51 environment, the contacting rigidity between slide block and linear guideway was simulated with spring elements, the finite element model of the machine tool was set up, and the static rigid.
51环境中，用弹簧单元来模拟滑块与直线导轨的接触刚度，建立了机床的有限元模型，并对其静刚度进行了分析。
51 environment, the contacting rigidity between slide block and linear guideway was simulated with spring elements, the finite element model of the machine tool was set up, and the static rigid.
51环境中，用弹簧单元来模拟滑块与直线导轨的接触刚度，建立了机床的有限元模型，并对其静刚度进行了分析。
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