EXPERIMENTAL SETUP FOR STUDYING DURABILITY OF THE SHIP SUPERSTRUCTURES MATERIAL

The description of an experimental setup for studying the durability of polymer composite materials samples which are used for the sea carrier ships superstructures manufacture is presented in the paper. The structural composition of the installation and methods of applying loads to the test sample are presented in detail. The installation includes a rocking table which simulates the rocking of the ship on which the test sample is fixed with bolted, riveted or adhesive connection methods. In this paper, an analysis of the loads affecting the walls of the superstructure is carried out. In particular, the area of the lower part connected to the main hull of the vessel during the operation of the vessel in marine conditions is analyzed. Acting loads on the test sample simulate the loads acting on the superstructures of sea vessels, in particular, on the junction of the superstructure with the main hull. During carrying out tests on this installation, it is possible to change the values of loads in accordance with the actual loading conditions of ship superstructures. The setup has a universal character and makes it possible to study the durability of samples made of polymer composite materials depending on their structural components, the number and arrangement of layers under certain loading conditions taking into account wind and wave loads as well as compressive loads that arise from the own weight of the superstructure. The calculation results of the stresses arising in the test sample under the action of the loads listed above are presented. The conclusion made proves the relevance and advantages of using the proposed installation for determining the durability of polymer composite materials and the tendency to improve it during further research.

shipbuilding, ship superstructure, polymer composite material, durability test, experimental setup, wind load, wave load, ship roll, connection unit, sample testing

1. Mouritz A. P. Review of advanced composite structures for naval ships and submarines / A. P. Mouritz, E. Gellert, P. Burchill, K. Challis // Composite structures. - 2001. - Vol. 53. - Is. 1. - Pp. 21-42. DOI: 10.1016/S0263-8223(00)00175-6.

2. Hertzberg T. LASS, Lightweight construction applications at sea. SP Report 2009:13 / T. Hertzberg. - Boras: SP Technical Research Institute of Sweden, 2009. - 221 p.

3. Håkansson M. Cost and weight of composite ship structures: A parametric study based on Det Norske Veritas rules / M. Håkansson, E. Johnson, J. W. Ringsberg // Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment. - 2018. - Vol. 232. - Is. 3. - Pp. 331-350. DOI: 10.1177/1475090217693419.

4. Tawfik B. Weight reduction and strengthening of marine hatch covers by using composite materials / Tawfik, H. Leheta, A. Elhewy, T. Elsayed // International Journal of Naval Architecture and Ocean Engineering. - 2017. - Vol. 9. - Is. 2. - Pp. 185-198. DOI: 10.1016/j.ijnaoe.2016.09.005.

5. Правила классификации и постройки морских судов. - СПб.: Российский морской регистр судоходства, 2018. - Ч. XVI. - 32 с.

6. Кутейников М. А. Разработка новых правил по конструкции и прочности морских судов из полимерных композиционных материалов / М. А. Кутейников, С. М. Кордонец, Н. Н. Федонюк // Научно-технический сборник российского морского регистра судоходства. - 2017. - № 46-47. - С. 64-71.

7. Алсаид М. Экономическая эффективность при изготовлении надстроек судов из композиционных материалов / М. Алсаид, А. Саламех // Сборник материалов VII Международной научно-практической конференции в рамках программы проведения торжественных мероприятий, посвященных празднованию 100-летия Астраханского речного училища. - 2018. - С. 132-135.

8. Дектярев А. В. Обоснование проектных характеристик надстроек на ранних стадиях проектирования средних рыболовных судов / А. В. Дектярев [и др.] // Известия КГТУ. - 2019. - № 54. - С. 154-165.

9. France W. N. An investigation of head-sea parametric rolling and its influence on container lashing systems / W. N. France, M. Levadou, T. W. Treakle, J. R. Paulling, R. K. Michel, C. Moore // Marine Technology and SNAME news. - 2003. - Vol. 40. - Is. 01. - Pp. 1-19. DOI: 10.5957/mt1.2003.40.1.1.

10. Пат. 205463 РФ, МПК B63B 79/30. Установка для испытаний соединений судовых корпусных конструкций на циклическую долговечность / Али Саламех, Мазен Алсаид, В. А. Чанчиков, В. А. Петровский; заяв. и патентообл. Али Саламех, Мазен Алсаид. - № 2020139513; заявл. 01.12.2020; опубл. 15.07.2021, Бюл. № 20. - 9 с.