摘要
基于能量原理和结构动力学原理,采用有限壳条离散渡槽槽身、空间梁单元离散槽身纵梁、加劲肋和拉杆,推导得出矩形多联渡槽静力计算和自由振动分析的梁壳复合有限条法。经算例验证,梁壳复合有限条法单元划分数目少,数据处理简单,具有良好的求解精度和效率。
A method of beam-shell compound strips is proposed to analyze the aqueducts of rectangular crosssection,in which finite shell strips combined with bending strips and plane strips are adopted for discretization of the aqueduct body,and spatial beam elements for the transverse stiffener.Stiffness matrix and load matrix are derived by the principle of minimum potential energy,and free vibration function derived by the principle of structural dynamics.A case study is given to show the accuracy,efficiency and applicability of the proposed method.
出处
《水力发电学报》
EI
CSCD
北大核心
2010年第5期153-158,共6页
Journal of Hydroelectric Engineering
基金
河南省基础与前沿技术研究计划项目(082300440070)
河南省科技攻关资助项目(0424470011)
关键词
水工结构
梁壳复合有限条
能量原理
渡槽
振动方程
hydraulic structure
beam-shell compound strip
energy principle
aqueduct
vibration equation
