Bioinspired cellular cementitious structures for prefabricated construction: Hybrid design & performance evaluations

摘要: Abstract Lightweight cellular structures with porous architectures and controllable mechanical characteristics are promising candidates for a broad range of prefabricated engineering applications. A triply periodic minimal surface (TPMS) structure that is naturally inspired continuous non-self-intersecting bioinspired structure. In this work, we investigate novel approach based on combination primitive-TPMS cells cubic blocks along lattice gyroid-TPMS achieving 50% volume fraction structures. specimens made cement mortar 3D printed sacrificial thermoplastic Polylactic Acid (PLA) moulds subjected to uniaxial compressive loadings. Compression tests carried out the cubes, while tensile behaviours follow simplified damage plasticity model, which used obtain material properties input model data. Finite element (FE) analysis employed predict performances such as stress distributions, stress-strain curves, mechanisms three representative (primitive, lattice, gyroid). Compressive experiment conducted these validated by FE model. Results indicate responses structure, wherein primitive yield highest strength, could be predicted accurately through analysis, outcomes from both numerical models experimental validated.