This is the first of two companion papers intending to summarize and pointing out some of the main engineering achievements obtained through a continuous cooperative research effort, jointly conducted by Industry and University. Part I covers Riser Mechanics and design issues. Part Ⅱ is dedicated to Riser Loading and Dynamic Positioning. The work starts with the first SCR (Steel Catenary Riser) concept and engineering analysis that paved the road toward a mature and reliable design which has been applied with success in floating production in Campos Basin, offshore Brazil. Several computer codes, numerical methods and analytical tools were developed and verified based on experimental results. In Part Ⅰ, SCR dynamics, touch down point dynamic interaction loading, catenary riser dynamic compression under twist, as well as risers and umbilical cables structural mechanics, are treated and modeled through analytical and numerical methods. SCR design issues and fatigue assessment of flexible pipes are also addressed. In Part Ⅱ, VIV (Vortex-Induced Vibration), extreme dynamic loading, nonlinear dynamics of FPSOs and turret positioning are presented. Nonlinear control techniques are also addressed aiming to optimize FPSO heading, constrained to a cost function that takes into account risers loading, mooring tension, roll motion and fuel consumption.
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