摘要
以能量变分原理为基础,考虑了剪力滞后效应、剪切变形和转动惯量的影响,通过应用一维离散有限元法建立了薄壁箱型梁结构在弯扭耦合作用的计算动力模型.得到结构的自振频率与ANSYS计算模型的结果进行了比较,两者吻合良好.充分说明了一维离散有限元法离散数目少,计算精度高,工作量低的优点,所得结论对薄壁箱梁的动力分析具有较好的参考价值.
The dynamic analysis model of thin-walled box girders under complex load is formulated by one-dimensional discrete finite member element method considering the shear：lag effect, shear deformation, moment of inertia. The natural frequency of vibration obtained with one-dimensional element method are compared with the ANSYS method, the numerical result obtained in this paper demonstrate the efficiency and accuracy of the method proposed.
出处
《河北工业大学学报》
CAS
北大核心
2009年第6期78-80,92,共4页
Journal of Hebei University of Technology
关键词
一维离散有限有限元
薄壁
剪力滞
动力
自振频率
one-dimensional discretization finite elment method
thin-walled beams
dynamic analysis
shear-lag effect
frequency of the free vibration
