I am a student and have a question:
For a small case study I have to determine the lateral and vertical impact loads during the installation of a object onto another object.
This is done by a cranevessel, using its dedicated lifting crane. However, I am not familiar with this type of installation though.
The case study is presented hereafter. A weight of approximately 65 tonnes is to be lowered with the crane onto the red marked object in a seastate of Hs = 0.5 m.
During the lowering, the crane boom outreach is 21 m from its rotation centerline and located 40 m away from the vessel centre of motion with its boom tip at a height of 60 m above the centre of motion.
How can I calculate the impact force as a result from lowering the object, weighing 65 tonnes, onto the stationary object (red object) which is fixed to the seabed.
F = m x a
The Attempt at a Solution
m = 65 tonnes
a = ?
F = ?