In solid state physics, a bandgap (BG) refers to a range of energies where no electronic
states can exist. This concept was extended to classical waves, spawning the entire fields of …

This paper presents a comprehensive review of the literature and trends on the design of
periodic microstructural composite materials including photonic crystals (PtCs), phononic …

Flexible manipulation of elastic and acoustic waves through phononic meta-structured
materials (PMSMs) has attracted a lot of attention in the last three decades and shows a …

The properties of bandgaps (BGs) for manipulating elastic/acoustic waves are highly
determined by the spatial distribution of materials in the primitive unit cell. In this work, the …

In this study, the vibration isolation characteristics and crushing behaviors of novel
hierarchical mechanical metamaterials are investigated. Numerical analyses are carried out …

The multi-material phononic crystals (PnCs) not only has the potential to achieve broadband
vibration reduction and noise control, but also has the capability to reduce costs and weight …

Genetic algorithm (GA) is used for the topological optimization of phononic crystal thin plate
composed of aluminum and epoxy resin. Plane wave expansion (PWE) method is used for …

All-angle negative refraction (AANR) is an effective way to achieve negative refraction in
phononic crystals (PnCs). It is difficult to achieve AANR using a traditional heuristic design …

As a unique kind of artificial periodic composite materials, phononic crystals have attracted
the wide attention in recent years. Unremitting efforts have been made to investigate the …

Lightweight design and harmful vibration isolation of supporting structures are the most
common design contents in practical engineering, but they are often difficult to be …