Fore Poppet Design and Optimization to Apply on Norway type Trawler Fishing Ships

Yıl 2023, Cilt: 9 Sayı: 2, 105 - 110, 30.06.2023

Serap Dogan Ozhan , Burak Galip Anık

https://doi.org/10.22399/ijcesen.1260965

Öz

In the classical sea landing methods of ships, aquaplaning and slipway support systems are used. In Norwegian Type Trawler Fishing vessels, the outer shell surface geometry is very delicate. Therefore; the incoming forces are extreme and the use of wooden poppets by these forces in normal sea landings is insufficient.
This work; It includes two different steel fore poppet designs and analyzes for the Norwegian type trawler fishing vessel, which cannot be launched with conventional slipway support systems after landing calculations. Within the scope of this study, two different steel fore poppets were designed. After the analyzes and examinations, it was decided that the Norwegian type trawler fishing vessel, which is the subject of the article, with which steel fore poppet design will be launched without any problems. Studies carried out in this context; Two different steel fore poppet designs were made using the Rhinoceros analysis program, which is a 3D design program.Rhinoceros Scan & Solve analysis was performed and simulation was run by applying forces to the designed steel fore poppets. A force of 3e+06N, including gravity, was applied to both designed structures. As a result of this; In the first steel fore poppet structure, a maximum displacement of 1.18611mm occurred. In structures designed under a force of 3e+06N; In the first structure, the maximum Von Mises Stress value was found to be 505.761MPa. In the second structure, the maximum Von Mises Stress value was found to be 163.142MPa.

Anahtar Kelimeler

Stern Launching, Steel Fore Poppet Design, Static Analysis, Shipbuilding Industry

Kaynakça

• [1]A. Biran (Çeviren: Y. Hüseyin). (2006) Gemi Hidrostatiği ve Stabilitesi; Birsen Yayınevi.
• [2]S. C. Misra; Design Principles of Ships and Marine Structures; International Standard E-Book (Number-13: 978-1-4822-5447-1); 2016.
• [3]D. Andrews. (2020). Design Errors in Ship Design; Journal of Marine Science and Engineering. 9(1);34 DOI:10.3390/jmse9010034
• [4]KJ Rawson , E. C. Tupper; (2001). Basic Ship Theory, Combined Volume 5th Edition; Elsevier Science.
• [5]K. Sarıöz (1999). Gemi Teorisi Ders Notları; İTÜ Gemi İnşa Ve Denizcilik Fakültesi Deniz Teknolojisi Mühendisliği Bölümü.
• [6]M. Etingü. (1946). Gemilerin Geometrisi ve Statiği; İstanbul Teknik Üniversitesi.
• [7]WQ. Shen (1996). Analysis of Ship End Launching Without Fore Poppet. Journal of Ship Production 12(3);172–177
• [8]Ç.Fahri (2021). Gemi Hidrostatiği Ve Stabilitesi Ders Notları; Yıldız Teknik Üniversitesi.