Techno Press
Techno Press

Advances in Nano Research
  Volume 19, Number 5, November 2025 , pages 519-530
DOI: https://doi.org/10.12989/anr.2025.19.5.519
 


Auxetic microrods for vibration control: Toward next-generation shin guard design
Chao Pan and Mostafa Habibi

 
Abstract
    This study explores the behavior of auxetic microrods—unusual structures that expand sideways when stretched—under torsional vibration. We examined triangular and elliptical forms using nonlocal strain gradient theory to capture the subtle effects that appear at very small scales. The analysis shows that shape, orientation, and boundary support all play a decisive role in how these rods respond. Although the work is grounded in mechanics, the findings translate readily into sports applications. Shin guards, for instance, face repeated, high-energy impacts where comfort and protection often pull in opposite directions. Traditional foams and plastics tend to pass sharp vibrations into the leg or wear out quickly. Auxetic microrods, by contrast, can spread the force of a strike, soften the shock, and extend the life of the gear—all without adding bulk. Incorporating these microscale structures could give athletes shin guards that are lighter, tougher, and more comfortable, marking a clear step toward smarter protective equipment.
 
Key Words
    analytical method; auxetic microrod; elliptical cross-section; NSGT; shin guard
 
Address
Chao Pan: Hunan Mass Media Vocational and Technical College, Changsha 410100, Hunan, China

Mostafa Habibi: Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, India/ Department of Mechanical Engineering, Faculty of Engineering, Haliç University, Istanbul, Turkey
 

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