Name: George Stone Email: Send Gender: Male Hometown: Carthage, NY Major: Mechanical Engineering School Name: Clarkson University School Location: Potsdam, NY Graduation Year: 2009 When In China, Thing(s) Missed Most From USA: Lance and Jessica. And dumplings. Mentor: Professor Yue Qianjin Graduate Student: Zhang Xiangfeng Research Title: Methods of Laying Pipe in Ultradeep Water With S-Lay Research Abstract: TS-lay is an effective method for laying underwater pipelines in shallow waters. However, as we discover oil and other resources in increasingly deeper waters, engineers are looking towards S-lay as a viable option for deepwater pipelay. There are three factors that are most important when analyzing S-lay. These are the water depth, the stinger geometry, and the tension. In this paper, three methods are used to analyze these parameters and how they affect the shape of the pipeline and the stresses involved. The natural catenary method treats the pipe as a long, flexible object. The stiffened catenary method accounts for the bending stiffness within the pipe, and must be solved using a singular perturbation approach. The finite element method analyzes the stresses and deformations of many fundamental sections of pipe, and assembles the pipeline using these pieces. The catenary methods are used to find the optimal horizontal force for a given water depth and entrance angle, and the results are verified using the finite element approach.his paper presents a new method by combining with calculation of FEM to avoid instability and modify uncertainty of direct measured ice force data in-situ/in field test. First, the field monitoring system, which includes ice conditions, structure response and ice force, on jackets in the Bohai Sea is introduced. Such a complete and simultaneous system provides the most actual information and many practical conclusions are advanced from the data. Then, based on structures’ linear performance under ice action and synchronization of pulse dynamic ice force, it is promoted that the relationship between responses of the actual structures under real global force and the FEM under local force from one load panel is the same with these two kinds of ice force. The qualified relationship between the responses is used to transfer the precise local force to global ice force. One example is calculated to show the whole process under typical ice conditions. The results can guide the design ice force to jackets structures in the Bohai Sea or even larger areas.