PSI - Issue 33

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 33 (2021) 67–74

© 2021 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 IGF ExCo Abstract This paper discusses the effect of element-length-to-thickness (ELT) ratio on midship structure analysis. Although it is widely known that every design must consider the best possible outcome of the design, indeed the simulation cannot produce the optimal analysis due to a variety of factors. During the study of the midship section configuration, the ELT ratio is one of the determining factors in the simulation. Since different ELT ratios would eventually produce different results, a calibration using the finite element method based on pioneer benchmarking studies is needed. The author designed a midship section using SolidWorks and ran the finite element analysis. The applied material is a titanium alloy, and the design’s boundary conditions are described as static loads, dynamic loads, and ELT ratios (in the range of 5-11). The midship design was tested with various ELT ratios, and the results, i.e., displacement, stress (von-Mises), and strain, were summarized. In terms of convergence tendency, midship displayed a displacement of 26.94 mm for the ELT ratio 10, with a strain of 5.579 x 10 �� and stress of 111.2 MPa. The displacement ratio was 0.97, the strain ratio was 0.917, and the stress ratio was 0.778 according to the simulation result. Different results can be presented by using different ELT ratios to assess the convergence tendency of the applied ELT ratios in finite element simulation. In contrast to the pioneer study, the ELT ratio converges on a scale of 10 with an average disparity of 11.16%. © 2021 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Keywords: Midship structure; convergence study; ELT ratio, finite element method 2 IGF26 - 26th International Conference on Fracture and Structural Integrity Assessment of Designed Midship Section Structures subjected to the Hydrostatic and Hydrodynamic Loads: A Convergence Study Muhammad Sabiqulkhair Akbar a , Aditya Rio Prabowo a, *, Dominicus Danardono Dwi Prija Tjahjana a , Fajar Budi Laksono b , Seung Jung Baek c a Department of Mechanical Engineering, Universitas Sebelas Maret, Surakarta 57126, Indonesia b P.T. DTECH Inovasi Indonesia, Salatiga 50742, Indonesia c Mid-size Initial Ship Design Unit, Korea Research Institute of Ships and Ocean Engineering, Daejeon 34103, South Korea Muhammad S j T b c

* Corresponding author. Tel.: +62-271-632-163; fax: +62-271-623-163 E-mail address: aditya@ft.uns.ac.id

2452-3216 © 2021 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 Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo

2452-3216 © 2021 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 IGF ExCo 10.1016/j.prostr.2021.10.010