In order to change the direction of sound waves. There are many needle-shaped honeycomb-like holes on the walls around the concert hall to absorb sound waves and reduce noisy echoes. Absorbs part of the sound waves, thereby weakening the echo. The basic structure of a honeycomb is a structure composed of regular hexagonal single cells, all of which face downward or to one side, arranged back to back symmetrically. ?

The walls around the concert hall generally need to have certain thermal insulation properties to withstand a certain buckling load. The stress analysis of honeycomb structure is the same as that of general sandwich structure.

Concert Hall Honeycomb Principle

No matter how fast or slow sound waves propagate, they will be reflected when they encounter obstacles, and they follow certain rules during reflection. This law has been widely used in medicine, science and technology, military and other aspects. It has especially solved many problems in architecture and brought unique artistic effects. For example, the Temple of Heaven Echo Wall is an architectural work of art that cleverly uses concave reflections of sound.

The walls around the concert hall have many needle-like honeycomb-like sandwich layers of metal materials, fiberglass or composite materials, and a series of hexagonal, quadrilateral and other shaped holes. . The upper and lower sides of the sandwich layer are then glued to thinner panels. The lightweight balsa wood sandwich used in the early days was not resistant to moisture, corrosion resistance, and fire resistance, so people turned their attention to the metal honeycomb sandwich.