不同拉压弹性模量刚架的算法

Algorithm for Frames of Bimodulus Materials

对不同拉压弹性模量刚架提出了计算假定,推导了单元公式,并构造了算法。计算表明,若采用适当的迭代因子可加快计算速度,能使迭代稳定,减少迭代次数。分析例题的计算结果得知,不同模量性对刚度和强度影响一般可达20%.

Some assumptions for frames of bimodulus material provided in this paper according to the theory of elasticity with different material moduli in tension and compression.The formula of finite elements is derived and an algorithm for the bimodulus frame is given too.The calculation presents that if a suitable iterative coefficient is adopted,the advantages of computing speed,iterative stability as welt as iterative times are evident.Some examples show that the stiffness and the strength of frames may change about 20 percent because of the material bimodulus properties.