Vibration and Shock: Research and Progress on Auxetic Metamaterials in the Automotive Field

Due to their unique mechanical properties, auxetic (negative Poisson's ratio) materials have attracted significant attention. In particular, they exhibit outstanding performance in automotive engineering by offering advantages such as excellent energy absorption, cushioning, vibration reduction, noise mitigation, and lightweight characteristics. This paper summarizes the fundamental concepts and mechanical properties of such metamaterials, with a focus on their applications in the automotive sector, including energy-absorbing and vibration-damping structures, suspension systems, and intelligent components. Additionally, the main fabrication methods and current limitations of auxetic materials are reviewed. Finally, future development directions and strategies for their application in the automotive field are proposed, providing a reference for the design of new automotive structures and their industrial implementation.