Participating mass in colliding risers

摘要

One of the main challenges in estimating impact energy in collisions between marine risers is the assessment of the riser mass involved in the collision. Evidently the entire riser mass does not contribute to the collision. Hence, the question is: What is the equivalent riser mass which contrib- utes to the impact energy? This article presents three different ways of estimating the riser mass participating in the collision energy. The first method is strictly experimental.