PSI - Issue 83

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ScienceDirect

Procedia Structural Integrity 83 (2026) 14–27

© 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ESIAM26 organizers Keywords: Triply Periodic Minimal Surface (TPMS); Additive Manufacturing; Hip Implant Design; Finite Element Analysis; Lattice Structures; Stress Distribution Abstract The biomechanical behavior of lattice-structured hip implants fabricated using additive manufacturing (AM), with a focus on the integration of Triply Periodic Minimal Surface (TPMS) structures, is investigated. Strut-based lattice structures often suffer from stress concentrations at strut junctions. The objective of this research is to study TPMS structures to replace conventional strut based lattice structures. Schwarz Primitive, Gyroid, and hybrid lattices are designed using Ti6Al4V, an additive manufacturing metal, and analyzed using nTopology student version under 1000N compression load and cantilever beam test. H2 has the lowest Von Mises stress of 354 MPa, compared with Schwarz Primitive and Gyroid at 552 MPa and 433 MPa, respectively. Gyroid exhibits near-isotropic behavior, with a 12.65% difference between maximum and minimum directional stresses. This study provides valuable insights into the application of additive manufacturing in medical implants and demonstrates the potential of finite element analysis in optimizing biomechanical performance, contributing to advancements in the biomechanical field. The fourth European Conference on the Structural Integrity of Additively Manufactured Materials (ESIAM26) Finite Element Evaluation of TPMS Lattice Structures Using Additively Manufactured Material Wong Kam Chee a , Mohd Akramin Mohd Romlay a , M.J. Mohammad Fikry b , Wan Sharuzi Wan Harun a , Kumaran Kadirgama a , Mohd Shamil Shaari a* , Mohamad Ridzuan Jamli c * a Faculty of Mechanical and Automotive Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah 26600, UMPSA Pekan, Pahang, Malaysia b Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima City, Hiroshima, 739 8527, Japan c Faculty of Industrial & Manufacturing Technology & Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia

* Corresponding author. E-mail address: shamil@umpsa.edu.my (M.S.Shaari)

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ESIAM26 organizers 10.1016/j.prostr.2026.07.003