Page 433 - Practical Design Ships and Floating Structures

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(a) Weld sequence 1

(b) \Veld sequence 2

Figure 6: Final y-displacements resulting from weld sequences 1 and 2 (scaling factor 15).
Figure 6: Final y-displacements resulting from weld sequences 1 and 2 (scaling factor 15).

5 COMPUTATIONAL EFFICIENCY

A significant increase in computational efficiency has been obtained by the techniques presented but
seen in relation to the welding application, which contains more than 8 metres of weld, it is still a time
consuming task to compute the welding distortions. The time used for one sequence adds up to
approximately 290 hrs on an HP 55000 workstation. Considering the size of the subassembly this is
very efficient seen from a simulation point of view, especially, if the capability of the workstation is
taken into consideration. Even a low cost multi processor PC and the use of code parallisation will
make it possible to reduce the computation time to less than 150 hrs. Hence, powerful workstations