框架元应用中单元划分原则及误差分析

框架元法是一种适用于微机分析大型结构的实用有限元方法。该法具有子结构法的特点和灵活性，同时又具有一般有限元的高效、准确、规范的优点。当其单元划人发合理时，查得到与其它有限元十分吻合的计算结果；但当其单元划分不合理时，其计算结果的误差也会增大。本文就框架元的划分原则提出建议，就产生误差的原因进行较深入的探讨。

The Discrete Method of Elements and Its Error Estimation in the Applications of Frame-Type Finite Element Method

Frame-type finite element method (FTFEM) is a practical finite element method which is applicabe to the structural analysis of large-scale buildings by micro-computer. This method possess the virtues of the adaptability of the substructure method and the accuracy, standard and effectiveness of the usual finite element methods. If elements are rationally discrelized, the analytical results by FTFEM will be in good accordance with the results by FEM. Otherwise the error of analytical results will be obviously increased. In this paper, the discrete method of elements is presented and the primary causes of yielding errors are studied.