Composite Shuffle Optimization with plys not in 45 -45° angle

Hey all,

currently I am working on a composite optimization process that involves no 45 and -45° plies.

What I experienced was, that with the step 3 (shuffle optimization), optistruct did not consider my constraint of maximum ply successor. Is this a knows issue?

Additionally, why can't we define pairing constraints between other plies than the 45 and -45° ? Is there a physical reason why you would do that just with 45 and -45 ?

Thanks and best regards  /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' />

Merula