摘要
弹性点支承有限长连续梁,当抗弯刚度EI、支点刚度系数D和跨距L组成的参数DL^3/EI很小时,广义结构节点位移列向量所满足的线性方程组是病态的。在剖析了问题的原因之后,详细叙述了解决这类问题所应采取的方法。
It is pointed out that on the condition that the parameter DL^3/EI is very small, the system of linear equations satisfied by the displacements of generalized structural nodes is ill-conditioned, where EI is the flexural rigidity of the continuous beam, D the rigidity coefficient of the elastic supports and D the span. of the continuous beam. A method to solve problems like this is narrated in this paper afteranalysing the causes of the problems.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1992年第3期72-79,共8页
Journal of the China Railway Society
关键词
病态方程组
矩阵
连续梁
轨道
ill-conditioned system of linear equations, condition number of matrix, column vector of the displacements of generalized structural nodes.
