Multi-level mechanism of biomimetic TPMS hybridizations with tailorable global homogeneity and heterogeneity

Abstract

The materials with tailorable plasticity plateau have outstanding advantages in addressing the scenario requirements of impact overload and energy absorption. However, this regulation normally adopts structures with heterogeneities or graded-density isomorphisms, which undermine structural continuity and affect structural performance under dynamic loads. This work constructs a bioinspired hybrid TPMS structure that exhibits macroscopic modular heterogeneous features and module internal homogeneous qualities. The hybridizations are constructed along [0,0,1], [0,1,1], [1,1,1] directions, where the implicit smooth surface characteristic facilitates the transitional hybrid and provides effective load-bearing in globally spatial directions. An RVE method validated by experiments is used to efficiently calculate their plastic behaviors. And the tailorable design of hybrid TPMS properties can be achieved based on macro-micro interaction analysis of hybridizations. The hybrid TPMS structures retain the characteristics of the original structure locally and exhibits macroscopic tailorable multi-level behaviors.