using 3d mesh is not advisable for part having more number of holes.
It may result in more number of lelements and need high end machines and more RAM too.
It also leads to higher simulation time.
And regarding shape factor, it is difficult apply for complicated shapes.
you need to decide, whihc is feasible to you and more ever all there are approximation only.
you can't expect 100% match with resutls but help to make decision.
FIAT-CHRYSLER ATC, Chennai
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