I get it, my apologies. It concerns case (2). I hope you can help me. The top end of the stationay object sits above the water and the lifted object needs to be lowered onto this object for which the impact load is to be calculated.
Yes it is, you asked how it looked like. However, I am looking for a method of solving. Otherwise asume it as being connected to the crane wire directly. No three point rigging in between.
The load is a cilindrical cap like object which closes off the fixed pipe. The cap is 4 m in diameter and is lifted at 3 lift points on the top. The weight is 60 ton.
Hi Nidum,
The fixed column is a pipe 3 m in diameter with a wall thickness of 30 mm. It stands 40 m heigh of which 10 m sits in the seabed and the top of the column is 12 m above the waterline. The object which is to be lowered onto this column is 4 m in diameter, a meter high and weighs 60...
Hi Nidum, thanks for the reply but I am not an Engineer with so much back ground knowledge that I can understand these documents. Can you give some advice?
Homework Statement
An offshore crane is lowering a load with a constant speed of 0.2 m/s. The crane tip has a maximum vertical and horizontal acceleration, as a result of a seastate, of 2.0 m/s2 (vertical) and 0.8 m/s2. The crane needs to lower a 200 ton object onto a stationary object. The...
Hi CWatters,
Thanks for the reply! I know that some specialist knowledge is required. However, I do not have this at hand. I know that, in a sea-state, the vessel has a certain response to it in terms of heave, pitch, roll and yaw. Heave, pitch and roll around the center of motion will result...
Homework Statement
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...