Dear all,
I've a little question and I hope you will solve my problem.

My project is an LNG plant on a ship (FRSU floating regasification service unit) and I've to take in account structures displacements due to ship motions.
These displacements come from accelerations to which ship is subjected. I know the absolute value of three components of the acceleration vector.
Combining all possible configurations I obtain 8 cases which are:

1) +Ax +Ay +Az
2) -Ax -Ay -Az
3) +Ax +Ay -Az
4) -Ax -Ay +Az
5) +Ax -Ay +Az
6) -Ax +Ay -Az
7) +Ax -Ay -Az
8) -Ax +Ay +Az

If you note, cases (1-2) (3-4) (5-6) (7-8) are the same but with inverse sign. So I can reduce them to only four conditions and in 'load cases' I'll put alternatively the sign plus or minus to acceleration vector.
In Caesar II there are only three fields, under 'uniform load' tag, to insert acceleration vectors. Therefore I'll lose one condition.
Is there a way to to insert vectors foreseen or fields are categorically three?
If it's so, I wouldn't know how to proceed.

I wait for your reply

Best regards

Nope, 3 is it. However, you won't lose anything.

Define Ax in U1, Ay in U2, and Az in U3. Then build your load cases as:


1) W + P1 + T1 (OPE)
2) W + P1 + T1 + U1 + U2 - U3 (OPE) etc.

Thank you, Richard.

I've another question.
I've to consider a lot of 'load cases'. For example:
operating case + Ax +0.5Ay + Az
and
operating case +0.5Ax + Ay + Az

Important: in uniform load case I put modulus of Ax,Ay and Az as you have suggested me above. But, how can I consider for the first case half Ay value and for the second case half Ax value? I don't think in Caesar's 'load cases' is possible writing W+P1+T1+Ax+0.5Ay+Az or W+P1+T1+0.5Ax+Ay+Az

Regards