波動ブラックホールを有するＴ形鋼の減衰挙動のFEM数値解析

抄録

This paper deals with vibration damping analysis using finite element method with Model Strain Energy Method for T-shaped steel structure having Krylov type of acoustic black hole. On the region of the acoustic black hole, viscoelastic vibration damping material is laminated. The T-shaped structure is fixed all edges except one edge where the acoustic black hole exists. The damping layer is modeled by linear solid finite elements in consideration of complex modulus of elasticity. We calculated modal loss factors and eigenmodes including coupled deformations among substructures in the T-shaped structure. We clarified effects of an Acoustic Black Hole on the modal damping for each eigenmode.