Titanium lattice-cored short beams: in-plane flexural behaviour numerical simulation

To enhance the mechanical performance and lightweight design of structural components, such as those found in automobiles, researchers have explored innovative sandwich structures incorporating metallic lattice cores. These lattice cores offer exceptional strength-to-weight ratios, making them ideal for applications demanding high performance and minimal mass. Although out-of-plane loading scenarios are well-studied, less focus has been given to in-plane flexural stress, which is common in automotive frames. In this study, a finite element method (FEM) model was employed to investigate the in-plane flexural behaviour of a titanium lattice-cored short beam. The beam was fabricated using EB-PBF (Electron Beam Powder Bed Fusion), an additive manufacturing technique capable of producing complex shape parts but susceptible to introducing defects that can compromise mechanical properties. A comprehensive comparison between the FEM model results and experimental data revealed a strong correlation, validating the accuracy of the simulation. This study provides valuable insights into the in-plane flexural response of lattice-cored structures and highlights the importance of considering damage mechanisms in additive manufacturing processes.