金属梯度多孔夹芯板振动特性分析

doi:10.7527/S1000-6893.2016.220576

固体力学与飞行器总体设计

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金属梯度多孔夹芯板振动特性分析

肖登宝, 赵桂平

西安交通大学航天航空学院机械结构强度与振动国家重点实验室, 西安 710049

收稿日期:2016-06-30 修回日期:2016-12-27 出版日期:2017-06-15 发布日期:2017-02-13
通讯作者: 赵桂平,E-mail:zhaogp@mail.xjtu.edu.cn E-mail:zhaogp@mail.xjtu.edu.cn
基金资助:
国家自然科学基金（11372237）

Vibration response of sandwich panels with gradient metallic cellular core

XIAO Dengbao, ZHAO Guiping

State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China

Received:2016-06-30 Revised:2016-12-27 Online:2017-06-15 Published:2017-02-13
Supported by:
National Natural Science Foundation of China (11372237)

摘要/Abstract

摘要：

金属梯度多孔材料芯层的胞孔壁厚度及半径沿芯层厚度方向逐渐变化，使得芯层的材料参数如密度和弹性模量等逐渐变化；采用金属梯度多孔材料代替传统均质多孔芯层会影响夹芯板的振动特性。基于高阶夹芯板理论且考虑梯度多孔芯层密度和弹性模量的耦合影响，建立了复合材料面层-金属梯度多孔夹芯板的振动方程。分析了3种密度的梯度芯层：单向分布、正梯度对称分布和负梯度对称分布对夹芯板固有频率的影响；最后讨论了3种梯度夹芯板在相同三角脉冲载荷作用下的振动响应。计算结果表明梯度芯层密度对称分布的夹芯板固有频率大于单向分布的夹芯板固有频率。

关键词: 金属梯度多孔材料, 夹芯板, 高阶板理论, 振动特性, 脉冲载荷

Abstract:

The gradient metallic cellular material has gradient pore structures from one surface of the material to the other one resulting in varying material properties,such as mass density and elastic modulus. The vibration response of sandwich panels may be influenced when the traditional homogeneous cellular core is replaced by gradient metallic cellular core. Based on the high-order plate theory and considering the coupling effect between the density and the elastic module of gradient metallic cellular materials, the vibration equation for the sandwich panel with composite face sheet and gradient metallic cellular core is developed. The influence of three gradient types of cores (unidirectional distribution, positive gradient symmetrical distribution and negative gradient symmetrical distribution) on the natural frequency of sandwich panels is discussed. The vibration responses of sandwich panels with three gradient metallic cellular cores under the same impulsive loading are discussed.

Key words: gradient metallic cellular material, sandwich panel, high-order plate theory, vibration response, impulse load

中图分类号:

V214.8
O327

肖登宝, 赵桂平. 金属梯度多孔夹芯板振动特性分析[J]. 航空学报, 2017, 38(6): 220576-220576.

XIAO Dengbao, ZHAO Guiping. Vibration response of sandwich panels with gradient metallic cellular core[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(6): 220576-220576.

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E-mail：hkxb@buaa.edu.cn

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金属梯度多孔夹芯板振动特性分析

Vibration response of sandwich panels with gradient metallic cellular core

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