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

本奖学金资助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。海上结构中加筋钢板在面内和侧向荷载联合作用下的性能研究。简化方法将用于预测在纵向或纵向和横向同时支持的加筋板的极限承载能力的行为。正交各向异性板将使用具有近似挠度函数的能量法进行分析。加筋板的宽厚比、加筋板的弯曲和扭转性能、加筋板的长径比、同时，还研究了横向荷载和平面荷载的相对量级对加筋板性能的影响。所提出的分析和实验研究将有助于更好地理解加筋板在各种载荷条件下的行为，并有助于制定改进的海上结构设计建议。这些基于实验和分析工作的建议将取代目前用于船舶和近海结构中普遍采用的加劲板的经验公式。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，实验研究将在那里进行。两位合作者将参与将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。目前的项目将使他们能够将他们的才能和各自实验室的资源结合起来，就共同感兴趣的问题进行合作研究，并为美国和新加坡带来潜在的利益。该项目与“发展中国家科学项目”的目标相关，该项目旨在通过交流科学信息、思想、技能和技术，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，并通过合作解决互利的问题。

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.