PSI - Issue 47

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 168–175

© 2023 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 IGF27 chairpersons Abstract Safety crashworthiness is defined as the ability of a material to absorb impact energy through controlled failure mechanisms and modes. The greater the force absorbed by the crashworthiness structure, the greater the level of safety that functions to protect the main structure from deforming due to impact. In this research, numerical validation and mesh-convergence study were carried out to study crashworthiness under axial loads. The results of numerical validation show that the similarity of this study with the reference reaches 95%. A discrepancy of 5% can occur due to different input material properties. The results of the mesh convergence study show that a 1 mm mesh is suitable for further research. This phenomenon occurred because a 1 mm mesh has results that are not much different than a smaller mesh, but has a smaller number of elements compared to a smaller mesh. © 2023 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 IGF27 chairpersons Keywords: Energy absorption; crashworthiness, thin-walled structures, multi-cell, concave hexagonal 1. Introduction Thin-walled structure and design have been widely applied in various engineering fields because of their lightweight and high performance and excellent mechanical properties (Dabit et al., 2020; Smaradhana et al., 2021; 27th International Conference on Fracture and Structural Integrity (IGF27) Crashworthiness of cross-sectional hollow-tubes filled with concave hexagonal under compressive load using nonlinear FE analysis Andre Hartawan Mettanadi a , Aditya Rio Prabowo a,* *, Teguh Muttaqie b , Nurul Muhayat a , Iwan Istanto c , Joung Hyung Cho d a Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta 57126, Indonesia b Research Center for Hydrodynamics Technology, National Research and Innovation Agency (BRIN), Surabaya 60112, Indonesia c Department of Electro-Mechanical, Polytechnic Institute of Nuclear Technology, Yogyakarta 55281, Indonesia d Department of Industrial Design, Pukyong National University, Busan 48513, South Korea

* Corresponding author. Tel.: +62-271-163-632; fax: +62-271-163-632. E-mail address: aditya@ft.uns.ac.id

2452-3216 © 2023 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 IGF27 chairpersons

2452-3216 © 2023 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 IGF27 chairpersons 10.1016/j.prostr.2023.07.008