U.S.-Singapore Cooperative Research on Local Buckling of Stiffened Plates in Offshore Structures

本奖项提供资金，允许佛罗里达大西洋大学海洋工程系M.Arockiasamy博士与新加坡国立大学土木工程系N.E.Shanmugam博士进行为期24个月的研究，海洋结构中加筋板在面内荷载和横向荷载共同作用下的性能研究。对于纵向支承或纵向和横向同时支承的加筋板的极限承载能力，将发展一种简化的计算方法。用近似挠度函数的能量法分析正交各向异性板。还研究了板宽厚比、加筋板的弯扭性能、加筋板的高宽比、侧向荷载和面内荷载的相对大小等参数对加筋板性能的影响。建议的分析和试验研究将有助于更好地了解加筋板在各种载荷条件下的行为，并将有助于制定改进的海洋结构设计建议。这些建议基于试验和分析工作，将取代目前在船舶和近海结构中普遍采用的加筋板的经验公式。该项目将为PI提供进入新加坡国立大学正在进行的研究的机会，在那里将进行实验研究。两位合作者将参与在佛罗里达大西洋大学进行的分析调查。合作者是备受尊敬的工程师，他们在研究领域发表了大量文章。本项目将使他们能够结合他们的才干和各自实验室的资源，就一个对美国和新加坡共同感兴趣和潜在利益的问题进行合作研究。该项目与发展中国家科学计划的目标相关，该计划寻求通过交流科学信息、思想、技能和技术来提高美国和发展中国家科学家和工程师之间的合作水平。和技术，并通过在互利问题上的合作。

This award provides funds to permit Dr. M. Arockiasamy, Department of Ocean Engineering, Florida Atlantic University, to pursue with Dr. N. E. Shanmugam, Department of Civil Engineering, National University of Singapore, for a period of 24 months, research on the behavior of stiffened steel plates subjected to the combined action of in-plane and lateral loading in offshore structures. Simplified methods will be developed for predicting the behavior of ultimate load carrying capacity of stiffened plates supported in the longitudinal direction or both in the longitudinal and transverse directions. Orthotropic plates will be analyzed using the energy method with an approximate deflection function. The effects of parameters such as plate width to thickness ratio, flexural and torsional properties of stiffeners, aspect ratio of stiffened plates, and the relative magnitudes of lateral and in- plane load on the behavior of stiffened plates also will be studied. The proposed analytical and experimental investigations will lead to a greater understanding of the behavior of stiffened plates under various load conditions and will contribute to the formulation of improved design recommendations for offshore structures. These recommendations, based on experimental and analytical work, will replace the empirical formulae currently being used for stiffened plates commonly adopted in ship and offshore structures. This project will provide for the PI access to ongoing research at the National University of Singapore, where the experimental research will be done. Both collaborators will be engaged in the analytical investigations which will be carried out at Florida Atlantic University. The collaborators are highly respected engineers who have published extensively in the field of the research. The present project will allow them to combine their talents and the resources of their respective laboratories in cooperative research on a problem of mutual interest and potential benefit to the United States and Singapore. This project is relevant to the objectives of the Science in Developing Countries Program which seeks to increase the level of cooperation between U.S. and developing country scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit.