A Particle Reinforced Gradient Honeycomb Sandwich Panel for Broadband Sound Insulation

The sound insulation capacity of traditional boards is limited by the law mass, and any improvement in contradicts demand for light weight. In order to overcome this shortcoming, a lightweight particle reinforced gradient honeycomb sandwich panel proposed achieve insulation. calculated based on transfer matrix method. accuracy theory verified through finite element simulation, influence material structural parameters performance analyzed. results show that can be significantly improved adding reinforcement particles aluminum matrix, also increases as mass fraction increases. addition, valley value curve moves towards low frequency direction, which indicates plate at frequencies effectively improved.