Abstract

Modal damping characteristics of the flexural vibration of a sandwich beam with paaially inserted viscoelastic layer have been quantitatively studied using the finite element analysis in combination with an experiment. Antisymmetric mode shapes of the flexural vibration were visualized by the holographic interferometry and agreed with those calculated by the finite element simulation. Effects of the length and thickness of partial viscoelastic layers on the system loss factor($\mu$) and resonant frequency($\omega$) were considerably latge at both symmetric and antisymmetric modes of the sandwich beam.

Keywords

• Viscoelastic Layer;
• Sandwich Beam;
• Flexural Vibration Damping;
• Resonant Frequency;
• Mode Shape

• 점탄성층;
• 샌드위치보;
• 횡진동 감쇠;
• 공진주파수;
• 모드형상;

File

Download PDF