New concept of carbon fiber reinforced composite 3D auxetic lattice structures based on stretching-dominated cells

A new concept of 3D auxetic lattice structures with high stiffness is proposed in this paper. Correspondingly, a feasible method for rapidly fabricating the proposed structures with high-performance continuous carbon fiber reinforced polymer (CFRP) composite is exploited. Theoretical models for predicting the homogenized elastic properties of the representative structure along all principal axes, including the Young's moduli, Poisson's ratios...