Finite Element Analysis of Lattice Structure Model with Control Volume Manufactured Using Additive Manufacturing

Ahmad Kholil, Gandjar Kiswanto, Adnan Al Farisi, Jos Istiyanto

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to optimize lattice structure design by changing the size of unit cell at a constant volume. It was observed that the changes in unit cell affected the strength of lattice structure, posing a challenge for additive manufacturing. To evaluate these effects, Finite Element Analysis (FEA) was conducted by applying static loading at one end of the surface from x, y, z-axis, and combination of model, using Inconel 625 additive manufacturing. Furthermore, the model was analyzed by plotting graphs of changes in cell size to deformation and stress. The addition of outer skin to deformation and stress behavior was also investigated. Printed parts were manufactured through additive manufacturing using PLA to assess how changes in lattice size affected overhang surface quality. The results showed that deformation and stress behavior were influenced by the smallest cross-sectional area and shape of the unit cell, as shown by the relationships within lattice structure models. The addition of compression loads also increased deformation and stress behavior, while high outer skin thickness reduced these parameters in lattice model. The results from the printed part of model showed poor surface quality, particularly on the overhanging part.

Original languageEnglish
Pages (from-to)1428-1437
Number of pages10
JournalInternational Journal of Technology
Volume14
Issue number7
DOIs
Publication statusPublished - 2023

Keywords

  • Additive manufacturing
  • Control volume
  • Design optimization
  • Lattice structure
  • Unit cell

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