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复合单元法在变截面梁自由振动中的应用——数值模拟

发表时间:2010-02-15  浏览量:1632  下载量:746
全部作者: 吕中荣,谢瑾荣,梁婉仪,王爽,刘亮
作者单位: 中山大学工学院
摘 要: 对复合单元法(composite element method,CEM)理论进行简单介绍,并将其应用于多阶梯变截面和渐变截面梁自由振动问题的分析。在划分不同单元数目的情况下,对利用CEM和有限单元法(finite element method,FEM)以及其他理论方法所得的固有频率进行比较,进一步结合软件ANSYS解进行验证。结果表明:CEM具有计算量小、计算精度高的优点,在结构动力分析中有一定的应用前景。
关 键 词: 有限元分析;固有频率;复合单元法;变截面梁;自由振动
Title: Composite element method for the free vibration analysis of beams with variable cross-section: numerical simulation
Author: LV Zhongrong, XIE Jinrong, LIANG Wanyi, WANG Shuang, LIU Liang
Organization: School of Engineering, Sun Yat-sen University
Abstract: A brief introduction to composite element method (CEM) is given and it is used to analyze the free vibrations of cantilever beams with variable cross-section in this paper. Comparison is made for the results using the CEM, finite element method (FEM) and other analytical methods. It is further verified by the results from ANSYS. The results show that the CEM has the advantages of computational efficiency and high accuracy.
Key words: finite element analysis; natural frequencies; composite element method; beams with variable cross-section; free vibration
发表期数: 2010年2月第3期
引用格式: 吕中荣,谢瑾荣,梁婉仪,等. 复合单元法在变截面梁自由振动中的应用——数值模拟[J]. 中国科技论文在线精品论文,2010,3(3):299-303.
 
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