薄壁结构的动力有限元法分析  

Dynamic Analysis for Thin-walled Grider with One-dimensional Finite Element

作　　者：徐志伟[1,2] 李小利[3] 宋金华[2] 

机构地区：[1]天津市滨海市政建设发展有限公司,天津300120 [2]河北工业大学土木工程学院,天津300132 [3]邯郸市交通局公路养护管理处,河北邯郸056005

出　　处：《河北工业大学学报》2009年第6期78-80,92,共4页Journal of Hebei University of Technology

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.

关 键 词：一维离散有限有限元 薄壁 剪力滞 动力 自振频率 

分 类 号：TU338[建筑科学—结构工程]