Probabilistic ultimate strength (US) distribution against environmental casualties: Stiffened panel under imperfection

Autor: Sholikhah Mar’atu, Imaduddin Hanif Muhammad, Adiputra Ristiyanto, Rio Prabowo Aditya, Kyun Kim Do, Danardono Dwi Prija Tjahjana Dominicus, Yaningsih Indri
Jazyk: English<br />French
Rok vydání: 2024
Předmět:
Zdroj: E3S Web of Conferences, Vol 519, p 04002 (2024)
Druh dokumentu: article
ISSN: 2267-1242
DOI: 10.1051/e3sconf/202451904002
Popis: In this study, the ultimate strength of a stiffened panel, which is one of the important components of ship structure, was analyzed by considering the effects of initial imperfection and geometric aspects with variations of random amplitude. The initial imperfection is influenced by local, torsional, and column imperfection modes, while the span/bay and plate slenderness ratios influence the geometric aspects. The analysis was carried out using the ANSYS software’s finite element method (FEM). To calculate the value of normalized strength, the regression calculation stage is carried out, the input is random amplitude with a limit of 0% to 100%, and the normal distribution calculation is shown in the probabilistic distribution. The results of this study indicate that the initial imperfection decreased the ultimate strength of the stiffened panel. The short heavy model has the highest average normalized strength value compared to the other models of variations, which is equal to 0.928. In contrast, the long light model has the lowest average normalized strength value, equal to 0.618.
Databáze: Directory of Open Access Journals