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有限单元法(Finite Element Method以下简称FEM)用于应力分析数码(电子计算机程序),已近20年之久。其间随着大容量超高速电子计算机的发展,FEM数码的计算技术和应用理论的发展的确是相当惊人的。各种单元的发展,在多元超矩阵解法,“输入”数字的自动形成,“输出”数字的图形处理等技术进展的配合下,现在,经济、可靠、应用方便的FEM“数码”技术正被广泛采用。然而,顾名思义有限单元法(FEM)必须把分析对象用恰当的有限个单元相近似。(即所谓模型化或切成小方格)这样由于单元的选择,网眼的粗密,边界条的适合以及负荷条件的选择等等都会导致分析结果的不同。然而,若要更好地运用FEM,必须确立一些应用技术,
Finite element method (FEM) for stress analysis of digital (computer program), nearly 20 years. In the meantime, with the development of large-capacity ultra-high-speed electronic computers, the development of FEM digital computing technology and application theory is indeed quite amazing. With the development of various elements, with the progress of technologies such as multivariate super-matrix solution, automatic formation of “input” figures and graphic processing of “output” figures, FEM “digital” technology, which is economical, reliable and easy to use, broadly used. However, the finite element method (FEM) as its name suggests must approximate the object of analysis to the appropriate finite number of elements. (The so-called modeling or cutting into small squares) so that the result of the analysis will be different due to the selection of cells, the coarse mesh, the fit of the boundary strip and the selection of load conditions. However, to make better use of FEM, some application technologies must be established,