>> 自然科学版期刊 >> 2019年05期 >> 正文
轴向运动功能梯度材料板的自由振动与屈曲特性
供稿: 黄小林;张伟;董雷;王熙 时间: 2019-10-23 次数:

作者:黄小林张伟董雷王熙

作者单位:桂林电子科技大学建筑与交通工程学院

摘要:为了解轴向运动功能梯度材料薄板的自由振动与屈曲特性,基于复合材料薄板理论推导出轴向运动功能梯度材料薄板的运动方程,用Galerkin法寻求不同边界条件下运动方程的级数解,计算其自振频率、临界屈曲速度和临界屈曲荷载,并通过数值算例分析了轴向速度、材料组分指数、面内力和边界条件等因素对轴向运动功能梯度材料板自振频率、临界屈曲速度和临界屈曲荷载的影响。结果表明:自振频率和临界屈曲速度随面内拉力的增大而增大,随面内压力和组分指数的增大而减小;板的自振频率随轴向运动速度的增大而减小,而临界屈曲荷载则随轴向速度的增大而增大;边界条件对板的临界屈曲速度和临界屈曲荷载会产生明显影响。

基金:国家自然科学基金资助项目(11362004);

关键词:轴向运动板;功能梯度材料;自由振动;屈曲;

DOI:10.16186/j.cnki.1673-9787.2019.5.21

分类号:O327;O241.8

Free vibration and buckling characteristics of axially moving functionally graded material plate

HUANG XiaolinZHANG WeiDONG LeiWANG Xi

School of Architecture and Transportation Engineering, Guilin University of Electronic Technology

Abstract:In order to understand the free vibration and buckling behavior of axially moving functionally graded thin plates, its motion equations were derived based on the composite thin plate theory.The Galerkin method was used to find the series solutions of the motion equations under different boundary conditions.The natural vibration frequency, critical buckling speed and critical buckling load were calculated.The effects of axial velocity, material component index, in-plane force and boundary conditions on the natural vibration frequency of axially moving functionally graded plates, critical buckling velocity and critical buckling load were analyzed by numerical examples.The results showed that the natural vibration frequency and the critical buckling velocity increased with increase of in-plane tension, but decreased with increase of in-plane pressure and material component index;the natural vibration frequency of the plates decreased with the increase of axial motion velocity, while the critical buckling load increased with the increase of axial motion velocity.Moreover, the boundary conditions also had a significant effect on the critical buckling velocity and critical buckling load of the plate.

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