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总览 评价 吕中荣 * , 谢瑾荣 , 梁婉仪 , 王爽 , 刘亮 ( 中山大学工学院; ) 摘要: 对复合单元法理论进行简单介绍,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,对利用复合单元法(CEM)和有限单元法(FEM)以
吕中荣*, 谢瑾荣, 梁婉仪, 王爽, 刘亮
(
中山大学工学院; )
摘要:
对复合单元法理论进行简单介绍,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,对利用复合单元法(CEM)和有限单元法(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:复合单元法具有计算效率高、精度高的优点。因此在结构动力分析中有一定应用前景。
关键词:
复合单元法;自由振动;变截面梁;固有频率
LU Zhongrong*, Xie Jinrong, Liang Wanyi, Wang Shuang, Liu Liang
(
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 beams with variable cross-section in this paper. Comparison is made for the results using the CEM, FEM and other analytical methods. It was further verified by the results from ANSYS software. The results show that the CEM has the advantages of computational efficiency and high accuracy. Thus, it has the potential for application in structural dynamic analysis.
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