G-forces (Accelerations) from Collision of 2 Ships
G-forces (Accelerations) from Collision of 2 Ships
(OP)
I am currently researching the kind of g-forces (accelerations) to be expected during the collision of two ships. Any help would be greatly appreciated.
Thanks.
Thanks.





RE: G-forces (Accelerations) from Collision of 2 Ships
RE: G-forces (Accelerations) from Collision of 2 Ships
RE: G-forces (Accelerations) from Collision of 2 Ships
per ISO 19902 Fixed Steel Offshore Structures / Appendix A.10.3 Vessel Collisions / A.10.3.2 Collision events
The kinetic energy of a vessel may be calculated using the equation:
E = 0.5 (a x m) v^2
Where:
E = the kinetic energy of the vessel, MJ
a = added mass factor.
1,4 for broadside collision.
1,1 for bow/stern collision.
m = vessel mass, tons
v = velocity of vessel at impact, m/s
The added mass coefficients given are typical values for large (5000t displacement) supply vessels. For smaller vessels a slightly higher value than 1,4 should be applied, e.g. 1,6 for a typical 2500t supply vessel.
There is a similar discussion with additional references given at http://www.hse.gov.uk/offshore/shipimpact.pdf
Regards, Gunnar
RE: G-forces (Accelerations) from Collision of 2 Ships
Can you tell me ...
Is there any suggested added mass factor increase (over 1.1) for a 2400 tonne displacement vessel in a head on collision.
You have been very helpful.
RE: G-forces (Accelerations) from Collision of 2 Ships
thread404-36240: Reaction Force of a Dropped Object may be helpful.
Ciao.
RE: G-forces (Accelerations) from Collision of 2 Ships
I realize that there are many variables, I have managed to get some information ... and with a few assumptions... I think I will be able to proceed... thanks!