Simulation and experimental energy absorption behavior of ABS-M30i-based three distinct lattice structures fabricated by polymer 3D printer

Abstract

The extensive research on three-dimensional (3D) printed structures and their recent, fast improvements in crashworthiness served as inspiration. This study examines the efects of three distinct designs, i.e., the Honeycomb cubical structure, the Pyramidal Cubical Lattice, and the Double Ring Cubical Lattice (SC-DRL) structure fabricated by Acrylonitrile Butadiene Styrene (ABS-M30i) material and variations in the porosity of the structure on the crashworthiness and deformation of 3D-printed cubical structures under axial compression loads that are quasi-static in nature. The energy absorption capabilities of three distinct structures created using the 3D printing technology were assessed in order to determine their crashworthiness. By assessing a number of mechanical parameters, including maximum stress, maximum load, energy absorption capacity, etc, the outcomes demonstrate that the Double Ring Cubical Lattice has the maximum load bearing capability, while the other two structures have other mechanical properties advantages. Initially Finite Element Analysis models assess the deformation caused by compression efectiveness on three diferent lattices, and mechanical compressive testing then confrms the experimental results. The correlation-based digital image (DIC) approach was used to detect strain on the entire lattice surface. The results reveal that the strain behavior determined from the experimentation was approximate, proving the reliability of the DIC approach and indicating that the strain as well as plastic dissipation energy is not spread equally throughout each layer. Mechanical evaluation outcomes for the three design structures were compatible with the assumptions of the Gibson-Ashby model, and Gibson-Ashby equations were created to forecast the mechanical performance of three diferent types of lattice structures generated by FDM.