Continuous stress model for beams treated with active constrained layer damping

Wang Miao;Meng Guang

Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (11) : 9-12.

PDF(733 KB)
PDF(733 KB)
Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (11) : 9-12.
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Continuous stress model for beams treated with active constrained layer damping

  • Wang Miao1,2; Meng Guang1
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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.

Key words

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

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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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