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      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 
    • Rahul Ponginan

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  1. Constraints for groups of design variables

    Hello, I'm searching for an easy way to implement the following constraint for a group of design variables in an optimization study within the Hyperstudy interface. Let's assume we have the variables A, B, and C wich should be varied within the following ranges: A: Lower Bound: 0, Upper Bound: 1, Initial Value: 0.33 B: Lower Bound: 0, Upper Bound: 1, Initial Value: 0.33 C: Lower Bound: 0, Upper Bound: 1, Initial Value: 0.33 Whereas the general constraint A+B+C<=1 musn't be violated. My approach using the function "Link Variables" did not lead to an appropriate result. I would like to avoid a redefinition of the parameters within the solver input file (i.e. by A = A/(A+B+C), in consideration of the explicit assignment between the parameters defined by Hyperstudy and the "real" parameters used within the solver. Does anybody know of an convenient way to implement the constraints as described? Thank you for your efforts in advance. Cheers, Felix
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