摘要
对输电自立塔建立桁架有限元模型进行几何非线性的分析.针对输电自立塔自身结构的特点,在进行多塔腿分析时,对总刚度矩阵的集成提出了一种全新的方法:保留总刚度矩阵中相同的部分,将不同的部分进行替换,并应用VB与Fortran语言编制了一个分析软件.通过算例表明,在进行多塔腿计算时,计算速度大为加快,计算结果能满足设计分析要求.
A finite element model of space truss for transmission towers is established; and its geometrical nonlinearity is analyzed. Utilizing the structural character of the transmission tower, a new method for integrating the total stiffness matrix is put forward when analyzing many towers simultaneously; reserving the same part in the total stiffness matrix and replacing the different part. A software is programmed with mixed languages of Visual Basic and Fortran. The examples indicate that the speed of calculation is faster and the results can satisfy design and analysis of the steel tower when it calculates multiple towers simultaneously.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2004年第2期53-56,共4页
Engineering Journal of Wuhan University
关键词
有限元
输电铁塔
几何非线性
finite element
transmission tower
geometrical nonlinearity
