层状复合材料周期结构的超声传播频散特性及均匀化模拟

常新龙; 尼 涛; 艾春安; 刘 瑜

层状复合材料周期结构的超声传播频散特性及均匀化模拟

第二炮兵工程学院, 西安 710025

详细信息

作者简介:
常新龙(1965- ), 男, 教授, 博士生导师, 研究方向为火箭发动机失效物理与可靠性, 复合材料无损检测。

中图分类号: TG115.28
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出版历程
- 收稿日期: 2009-10-12
- 刊出日期: 2010-10-09

Ultrasonic Dispersion and Structure Homogenization Simulation of Layered Periodic Structures Composites

摘要

摘要: 首先采用改进全局矩阵算法, 研究了层状复合材料周期结构的频散特性。当层数足够大时, 在特定方向上结构表现出类似均匀各向异性材料的性质, 可采用均匀化方法求解频散曲线。其次, 给出了层状复合材料周期结构均匀化的计算方法, 并研究了其适用范围。发现在低频段和高频高相速度段范围内可以采用等效模量计算频散特性; 而高频低相速度范围内不能采用均匀化方法, 该范围内波的性质有待进一步研究。
- 层状周期结构 /
- 复合材料 /
- 全局矩阵 /
- 等效模量
Abstract: The dispersive property of layered periodic composites structure was researched by improved global matrix approach, firstly. It was found that the structure represented characterization of the homogenous anisotropic materials when the number of layer was large enough. Then the effective modules algorithm was developed and its applicability was discussed. The effective modules could be accepted in two ranges including the lower frequency band as well as the higher frequency and phase velocity band. However, the dispersive curves could not be calculated using effective modules in situation of higher frequency band with lower phase velocity below the longitudinal wave velocity, and the characterization of waves needed further investigation.
- Layered periodic structure /
- Composites /
- Global matrix /
- Effective modules

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参考文献(13)

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层状复合材料周期结构的超声传播频散特性及均匀化模拟

作者简介: 常新龙(1965- ), 男, 教授, 博士生导师, 研究方向为火箭发动机失效物理与可靠性, 复合材料无损检测。

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出版历程

Ultrasonic Dispersion and Structure Homogenization Simulation of Layered Periodic Structures Composites

计量

出版历程

目录

作者简介:
常新龙(1965- ), 男, 教授, 博士生导师, 研究方向为火箭发动机失效物理与可靠性, 复合材料无损检测。