【摘要】 本程序试图用小内存和没有外存的小机进行由杆、梁及板组成的空间结构的应 力分析。用小机计算大型复杂结构的主要困难是如何处理总刚度阵和逐段实行三角 化．在三角化过程中，影响后面二角阵的那些矩阵元素不占存贮单元，而分别直接 加到它对应的单元中，所以节省了大量的内存．加快了计算．此外，在总刚度阵中 采用了局部－总体混合座标系，较满意地解决了由多余自由度引起的方程的奇异性． 那些不必要和不重要的自由度从总刚度阵中除掉，以节省内存，加快计算．达到了 用小机解决大型结构问题的目的。更多还原

【Abstract】 This program attempts to do the stress analys is of the space structures compoesd of bars, beams and plates by the small machine with small capacity of inner memory and imperfect outer memory.The main difficulty to compute the large complex structure by small machines is how to handle the overall matrix of rigidity. The formation of the overall matrix and transformation to the triang- le-shaped matrix are performed step by step. In the course of the transformation, those elements of the triangle matrix which effect the subse- quent triangle matrix do not occupy memory cel1s separately but add directly to the corresponding rooms. Thus a large amount of inner memory are saved and the computations are speeded up. Besides, in the overall matrix of rigidity, the combined coordinate system of local and overall co-ordinates is used so that the peculiarity of the linear equations due to the non-effective degrees of freedom are solved more satisfactory. Those unnecessary and unimportant parameters of degrees of freedom are excluded from the overall matrix of rigidity to save the storage of inner memory and speed up the computation. The aim to use smaller computing machine to solve large scale structural problems is thus fulfilled.更多还原