Finite element approach and mathematical formulation of viscoelastic auxetic honeycomb structures for impact mitigation

Abstract

Auxetic structures are designed to be used for producing auxetic materials with controllable mechanical properties. The present study treats a design of viscoelastic auxetic honeycomb structures using numerical approach and mathematical formulation for impact mitigation. In order to increase the energy absorption capacity, viscoelastic material has been added into auxetic structure as it has capability to dissipate energy under impact loading. Kelvin-Voigt and Maxwell models were employed to model viscoelastic components. The auxetic structure was then subjected to impact load with linear and nonlinear load functions. Dynamic analysis was carried out on a star honeycomb structure using continuum mechanics. Influence of different parameters on response function was then further studied. The primary outcome of this research is the development of viscoelastic auxetic honeycomb structural design for predicting the impact resistance under impact loading.