Study on the Influence of Temperature on the Collapse Behaviour of Stiffened Panels of Ship
- Ming Cai Xu (Huangzhong University of Science & Technology) | Yong Qing Zuo (Huangzhong University of Science & Technology) | Zhao Jun Song (Huangzhong University of Science & Technology) | Jin Pan (Wuhan University of Technology)
- Document ID
- International Society of Offshore and Polar Engineers
- The 28th International Ocean and Polar Engineering Conference, 10-15 June, Sapporo, Japan
- Publication Date
- Document Type
- Conference Paper
- 2018. International Society of Offshore and Polar Engineers
- FEM, Stiffened panels, Ship, Ultimate strength
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- 14 since 2007
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Ships voyaging through polar areas and tropical waters suffer different ambient temperatures, which leads to a consequence that the extreme temperature of local hull structures can range from −60 °C to 80 °C. Mechanical and thermal properties of carbon steel vary as the temperature changes. In general, the yield strength and elastic modulus would increase while the plasticity would reduce if the temperature decreases, and meanwhile the thermal expansion coefficient would also decrease with the dropping of temperature. The present paper aims to investigate the influences of various temperatures on the ultimate strength of stiffened panels. At first, for obtaining the testing data of mechanical properties, a series of tensile testing were conducted on standard specimens made of AH32 at several temperatures in a temperature chamber. In addition, numerical simulations are carried out to assess the ultimate strength of stiffened panels under the change of temperature conditions and axial compressive load.
With increase of global temperature, more and more ships sail from tropical regions to the polar region. Due to the temperature difference in the shipping area, the impact of temperature changes on the performance of ships has to be considered. Therefore, it is extremely important to study the change of the ultimate strength of marine structures at different temperatures. There are several methods to calculate the ultimate strength of ship hull girder, including progressive destruction method also known as Smith’s method, direct calculation method and nonlinear finite element method. Chen (1983) modeled part of the hull girder into slab and beam structures and analyzed the ultimate strength of the hull using the finite element method. Paik (2007) studied the calculation of the ultimate strength of stiffened plates under axial compression. Luís et al. (2009) used Smith’s method to analyze the residual strength and residual reliability of double-hull tankers in different stranded scenes.
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