主动约束层阻尼梁结构的应力连续模型

王淼;孟光

振动与冲击 ›› 2009, Vol. 28 ›› Issue (11) : 9-12.

PDF(733 KB)
PDF(733 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (11) : 9-12.
论文

主动约束层阻尼梁结构的应力连续模型

  • 王淼1,2;孟光1

作者信息 +

Continuous stress model for beams treated with active constrained layer damping

  • Wang Miao1,2; Meng Guang1
Author information +
文章历史 +

摘要

考虑到较厚的阻尼层内高阶剪切效应不应忽略,使用Reddy的三阶位移场描述阻尼层的纵向位移,使得在分界面上不仅位移连续,而且应力连续,从而提出ACLD结构的一种新模型“应力连续模型”。在此基础上,使用谱有限元法(SFEM)对ACLD梁结构进行力学建模和数值模拟,并与传统Mead-Markus模型结果进行了比较。研究表明,应力连续模型在固有频率和模态损耗因子预测上优于传统Mead-Markus模型。

Abstract

Considering the effect of higher-order shear deformation in thick damping layer, a new model called “continuous stress model” is proposed for the ACLD structures. Based on the Reddy’s simplified higher-order shear theory, a three-order displacement field is applied to the damping layer. So both the displacements and shear stresses are ensured to be continuous at the interfaces of three different layers. And the novel spectral finite element method (SFEM) is used to model a fully ACLD beam and comparisons are made between the new model and the traditional Mead-Markus model. It can be seen that the continuous stress model is better than the Mead-Markus model on predictions of natural frequencies and modal loss factors.

关键词

主动约束层阻尼 / Reddy高阶剪切理论 / 谱有限元法 / 应力连续模型

Key words

active constrained layer damping (ACLD) / spectral finite element method (SFEM) / Reddy’s simplified higher-order shear theory / continuous stress model (CS model)

引用本文

导出引用
王淼;孟光. 主动约束层阻尼梁结构的应力连续模型[J]. 振动与冲击, 2009, 28(11): 9-12
Wang Miao;Meng Guang . Continuous stress model for beams treated with active constrained layer damping[J]. Journal of Vibration and Shock, 2009, 28(11): 9-12

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