Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
In Japan, where earthquakes occur frequently in recent years, systems and structures to reduce the damage caused by earthquakes have been attracting attention.The purpose of this study is to investigate efficient vibration and wave damping methods by focusing on the acoustic black hole proposed by Mironov.Since acoustic black holes are dangerous due to their sharp tips, this paper employs a crater-type acoustic black hole in which the thickness of the panels decreases in a circular manner toward the center. And a hybrid vibration analysis using statistical energy analysis (SEA) and FEM for a model of two panels connected in an L-shape and given a crater-type acoustic black hole with a damping layer on one side. We focused on the validation of the proposed SEA method and discuss the effects on the wave propagation characteristics between two panels in an L-shaped panel structure when a crater-type acoustic acoustic black hole is given.
