Hi,

I have written one cutting stock model, the constraint is that cutting width should not exceed mother coil width. The indices are mc (mother coil number), mct (mother coil type), bct (baby coil type). Two different bct can be slitted from a same mc and mct.

The constraint is that

IndexDomain: (mc,mct)|pMotherCoilTonnage(mc,mct)>0

sum[(bct)|pBabyCoilQuantity(bct)>0,vNosBabyCoilMotherCoil(mc,mct,bct)*pBabyCoilWidth(bct)] <= (pMotherCoilWidth(mc,mct) - pTrimLoss(mc,mct))*vMotherCoilSlit(mc,mct).

Now the problem is my parameter on trim loss pTrimLoss(mc, mct) is dependent on mc, mct and bct. The trim loss of a ‘mc’ will be differnet for two different bct. I have taken the parameter as pTrimLoss(mc,mct, bct). I am unable to fit it in the constraint. How to address it.