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空间网架结构是由许多杆件沿平面或者曲面按一定规律组合而成的高次静不定结构,它能够承受较大的集中荷载或非对称荷载,应力分布较为均匀,近年来,这种结构采用的越来越多。由于杆件多,自由度多,一般人工计算不易得到较精确的内力值。这就必须借助于计算机来完成。文献曾给出用ALGOL语言编写的程序,应用起来很不方便。本文在原调试的有限元平面问题程序的基础上,调试出用FORTRAN语言编写的计算程序,适用性更强。
The space grid structure is a high-order statically indeterminate structure in which a plurality of rod members are combined along a plane or a curved surface according to a certain rule, and it can withstand a large concentrated load or an asymmetrical load, and the stress distribution is relatively uniform. In recent years, such a structure has been More and more. Due to the large number of rods and many degrees of freedom, manual calculations are not easy to obtain more accurate internal forces. This must be done by means of a computer. The literature has given programs written in ALGOL language that are inconvenient to apply. In this paper, based on the original debugging of the finite element plane problem program, the calculation program written in the FORTRAN language is debugged, and its applicability is stronger.