Posted by: Naren
Pitch & Roll Loading - 08/18/07 05:26 AM
Dear All,
Can sombody explain "Pitch & Roll Loading" on piping system.
Regards,
Naren
Posted by: Richard Ay
Re: Pitch & Roll Loading - 08/18/07 10:14 AM
When a floating body (a ship or a barge) floats in a wave train, it is subjected to inertial (acceleration) loads as it (the body) responds to the altering free surface. "Pitch" is the rotation (up and down) of the bow (front) and stern (back) about the center of the body. "Roll" is the rotation (side to side) about the long axis of the body.
Typically, piping systems subject to pitch and roll are analyzed using "static equivalent" methods where the loading is a "g" factor.
Posted by: FaizAriff
Re: Pitch & Roll Loading - 04/16/11 09:35 PM
Hi,
If the given values of pitch and roll were in ''degrees"?, how do i change it into g terms?
Posted by: danb
Re: Pitch & Roll Loading - 04/19/11 02:38 AM
It is a little bit complicated, naval engineer should give you the values.
Regards,
Posted by: Crusader911
Re: Pitch & Roll Loading - 04/19/11 03:28 PM
I just went through this, and you really need to request the g-factors and put them in as uniform loads. I expended a lot of effort trying to put in rotational deflections and could not get it to work properly. Save yourself some time and look for a recent thread where I documented my problem and the help I was given.