In-plane mechanical and thermal conductivity properties of a rectangular-hexagonal honeycomb structure

摘要

In this work, the mechanical in-plane and thermal conductivity properties of a novel cellular configuration for multifunctional applications are described using analytical and finite element models. The hexagonal-rectangular honeycomb proposed allows one more geometric parameter in the unit cell compared to the classical hexagonal honeycomb configurations. The added geometric entity provides enhanced in-plane flexibility and tailoring of properties, such as the in-plane Poisson's ratio, which can become negative under specific geometry configurations. The thermal conductivities are modeled using the electric-thermal analogy, allowing closed-form solutions for the thermal properties of the honeycomb. Comparison between analytical models and finite element simulations provides good convergence of results.