摘要
导线的静平衡计算问题是输电线动力分析计算的基础.本文采用直线方程建立导线静平衡计算的有限元模型,在档距两端用两个三维空间梁单元模拟相邻档对其作用,然后施加初始张力和重力后进行数次非线性静力分析,最终可得到导线的初始平衡形状.理论抛物线模型与本文计算结果进行对比验证了本文找形方法的正确性.
Calculating problem of transmission line static equilibrium is the basic of dynamic analysis.Finite element model was developed according to linear equations of multi-span transmission line,and two space beam elements at the end of the transmission line was used to simulate the influence of adjacent span.Accurate initial shape of transmission line was obtained by nonlinear static analysis of several times after exerting tensile force and self-weight.Calculation results was compared with theoretical models, which validated the form -finding method.
出处
《天津理工大学学报》
2009年第6期1-4,共4页
Journal of Tianjin University of Technology
基金
国家自然科学基金(10872141)
关键词
导线
静平衡
有限元
transmission line
static equilibrium
finite element
