摘要
以某大型水平轴风力发电机组塔筒为研究对象,通过理论计算和有限元数值模拟的方法,对该塔筒临界屈曲载荷进行计算和分析。研究结果表明经典工程计算屈曲临界值往往偏高,而基于有限元的非线性屈曲分析能够考虑几何非线性和材料非线性等因素,其结果可作为对工程算法的修正,为工程实际提供参考,为塔筒结构屈曲优化提供优化方向和初始参数。
Taking the tower of a large-scale horizontal axis wind turbine as the research object, the critical buckling load of the tower was calculated and analyzed by theoretical calculation and finite element numerical simulation. The results show that the critical buckling load calculated by classical engineering method is greater than that by finite element method, because nonlinear buckling analysis based on finite element method can consider some nonlinear factors, such as geometric nonlinearity and material nonlinearity. The result of finite element analysis can revise the engineering algorithm, provide the reference for engineering practice, supply optimization purpose and initial parameters for buckling optimization of tower structure.
作者
杜静
周云鹏
郭智
Du Jing Zhou Yunpeng Guo Zhi(College of Mechanical Engineering, Chongqing University, Chongqing 400030, China China Academy of Machinery Science ＆ Technology, BeijinglO0044 , China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第12期3178-3183,共6页
Acta Energiae Solaris Sinica
关键词
塔筒
临界屈曲载荷
工程计算
数值模拟
tower
critical buckling load
engineering calculation
numerical simulation
