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目前用有限单元法分析梁是一种必不可少的手段,它的分析精度与所划分的单元网格尺寸,以及节点数有关。单元划分得越多,计算结果就越准确,但所需求解的未知数也越多,计算工作量越大。此外,由于梁的形状特征对单元网格的划分有特殊的要求,通常必须采用较细的单元网格才能得到较高精度的解答。这使得目前面广量大的微机和小型机的应用受到限制。本文根据梁的受力特点,提出了一种减少未知数、提高计算精度的实用方法,不但减少
The finite element method is currently used to analyze the beam is an essential means, and its analysis accuracy is related to the size of the cell grid and the number of nodes. The more divisions the unit has, the more accurate the calculation results will be, but the more unknowns that need to be solved, the greater the computational workload. In addition, since the shape characteristics of the beam have special requirements on the division of the cell grid, a finer cell grid must usually be used to obtain a higher accuracy solution. This has limited the use of a wide range of microcomputers and minicomputers. This paper proposes a practical method to reduce the number of unknowns and improve the calculation accuracy based on the force characteristics of the beam, not only reducing