51results about How to "Strong absorption peak" patented technology

The invention belongs to the related technical field of multifunctional gradient dot matrix sandwich structures, and discloses a gradient dot matrix sandwich structure with sound absorption and bearing functions and a design method. A microstructure in the sandwich structure comprises plate grids which are oppositely arranged up and down and a truss arranged between the plate grids, one or more micro-perforated holes are formed in the plate grids, and the truss is formed by a single rod array. The invention further discloses a design method of the microstructure. The sandwich structure comprises multiple layers, each layer is formed by tightly connecting the microstructures arranged in a gradient mode, the microstructure of each layer comprises multiple areas, the microstructures in the different areas are the same or different, and the thicknesses of the different areas are the same or different; the microstructural plate grids in the same area are the same, but the trusses are not necessarily the same. The invention further discloses a design method of the sandwich structure. According to the invention, the problem of low sound absorption and bearing performance of the sandwich structure is solved.