摘要
以受横向简谐激励机械载荷和热载荷共同作用的、金属基陶瓷功能梯度材料圆柱曲板为研究对象,利用有限元软ANSYS对两边固支两边自由的功能梯度材料柱面曲板进行建模,并对其在热环境下进行模态分析。这里采用了比较适合薄板的SHELL99单元模型,给出不同几何和物理参数条件下FGM圆柱面曲板前8阶振动模态图,得到固其有频率,并且对前8阶模态做模态进行分析,结果发现圆柱曲板的模态振型主要有横向和扭转振动,其中前两阶模态以横向振动为主。分析结果为进一步的理论研究、对结构设计和参数优化提供了有效的依据。
Modal analysis of functionally graded cylindrical curved panel with the edges of both ends clamped and both free in thermal environments is presented.This cylindrical panel is subjected to transverse excitations.Material properties are assumed to be temperaturedependent.The thermal effect due to one-dimensional temperature gradient is included in the analysis.The cell sheet Shell99 element model is used.The natural frequency and modal shapes of the first 8 modes of the panel are given.It can be seen that there exist the transversal,torsional and extensional vibrations.The transverse vibration occurs among 1,2,4,6,8 modes mainly and the torsional vibration exists among 3,5,7 modes.The results can be used for optimization design for cylindrical panel.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2014年第8期198-205,231,共9页
Transactions of Materials and Heat Treatment
基金
北京市教委科研资助项目(SQKM201211232001)
国家自然科学基金(11272063)
北京市属高等学校高层次人才引进与培养三年行动计划(2013-2015年)青年拔尖人才培育计划(CIT&TCD201304112)
关键词
功能梯度材料
柱面曲板
模态分析
ANSYS
functionally graded material
cylindrical curved panel
modal analysis
ANSYS
