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复合材料封闭变截面薄壁梁自由振动分析 被引量：3

Free vibration analysis of composite thin-walled cantilever beams with variable closed cross-section
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摘要 基于拉格朗日方程建立了复合材料封闭变截面薄壁梁的自由振动微分方程,给出了两种刚度配置下的变矩形截面悬臂直梁的自由振动方程简化形式及其相应的迦辽金法求解的固有频率。基于大型通用有限元软件ANSYS,计算了薄壁变截面悬臂梁的固有频率,并且与迦辽金法的求解结果进行了对比。分析了复合材料的弹性耦合,铺层角度和截面变化对薄壁梁的自由振动的影响。 The equations of motion for the free vibration of composite thin-wall variable closed cross-section beams were derived based on Lagrange＇ s equation of the second kind. Two taper box beams with different stiffness distribution were taken into account and their corresponding simplified forms of the free vibration equations were presented and solved by means of Galerkin method. The finite element analysis software, ANSYS was used to calculate the natural frequencies of the composite thin-walled cantilever beams. The results were compared with Galerkin solutions. The influences of composite elastic coupling, ply angle and taper ratio on thin-walled beams＇ free vibration were investigated.
作者 马静敏 任勇生 姚文莉
机构地区 山东科技大学理学院 山东科技大学机械电子工程学院 青岛理工大学理学院
出处 《振动与冲击》 EI CSCD 北大核心 2012年第14期117-123,共7页 Journal of Vibration and Shock
基金 国家自然科学基金(10972124 10872118) 山东省教育厅科技计划资助项目(J08LB04)
关键词 复合材料 薄壁梁 固有频率 变截面 ANSYS软件 composite thin-wall beam natural frequency variable cross-section ANSYS software
分类号 O327 [理学—一般力学与力学基础]
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参考文献21

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共引文献5

同被引文献38

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引证文献3

二级引证文献9

振动与冲击
2012年 第14期

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