The traditional sound absorption problem has not been completely resolved over the last
200 years. At every stage, its research has changed depending on practical requirements …

In this research, a design method for triply periodic minimal surface (TPMS) structures with a
high specific strength for broadband sound absorption is proposed. The graded TPMS …

Elastic wave metamaterial is a kind of artificially designed periodic structure. It has received
extensive attention due to its special mechanical properties and has shown valuable and …

The viscous and thermal effects contribute to the acoustic energy dissipation during sound
propagation in complicated structures. In this study, the contributions of viscous and thermal …

A new phononic crystal with the graded supercell configuration is proposed to broaden the
Bragg scattering band gaps. The graded structural design can merge adjacent multiple band …

Noise is associated with physical and mental health and well-being. Sound insulation
materials allowing ventilation are in demand. A staggered phononic crystal with fins (SPCF) …

In microscale structures, thermal and viscous effects are important factors affecting the
effective transmission of acoustic energy. In this paper, the effects of porosity, single thermal …

We investigate the formation mechanisms of bandgaps (BGs) in 2D phononic crystals
(PnCs) with 4-fold rotational symmetry, focusing on the symmorphic p4 and p4 mm, and the …

This work presents a theoretical study of a parametric transmitter employing a small
ultrasonic transducer and an acoustic lens for the collimation of the non-directional primary …

弹性波超构材料是一种人为设计的周期结构材料, 因其独特的力学性能而受到广泛的关注,
在军用和民用领域都展现出重要而独特的应用前景. 根据需求主动或被动地调控弹性波超构材料 …