Investigation of Mechanical Behaviour of Precipitate based Architected Lattice Structures

Abstract

Metamaterials are a class of materials engineered to have properties that are not found in nature. These artificial materials are designed to manipulate elastic waves, acoustic waves, or other physical phenomena which are not possible with traditional materials. The field of metamaterials has gained significant attention and has led to ground breaking developments in various scientific and technological domains. Numerous attempts have been made to analyse the mechanical behaviour of precipitate based metamaterials, evaluation of static and dynamic characteristics of these materials is still unexplored. Therefore, the objective of the present study is to explore the mechanical behaviour of precipitate based lattice metamaterials. In this regard, the development and analysis of lattice meta structures, a group of material with artificially designed, are characterized by periodically placed microstructures. Emphasizing their utility, these materials are distinguished for their low weight and superior energy absorption capabilities. Employing additive manufacturing technique, diverse precipitate types are synthesized and integrated into architected metamaterials. The study extensively evaluates the mechanical properties and deformation modes of these structures, elucidating their performance across varied conditions. The foundational design is formulated and comprehensive analysis is executed through finite element modelling. This research contributes to the progressive evolution of lattice structures for critical applications, providing nuanced insights into the tailored design and performance optimization for aerospace and defence industry.