How Weighted compliance works?

barba97
barba97 Altair Community Member
edited June 2023 in Community Q&A

I'm running an optimization problem which minimizes the WEIGHTED COMPLIANCE, I would like to know if I increase the weight of one subcase, the software will add more material where the force of this loadcase is applied? what does this means for the software?

If I increase the weight, the software consider that specific subcase as more important?

Does the software achieve a smaller compliance at the end of the optimization since the starting one is higher due to the weight?

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Answers

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited June 2023

    correct, you can assign a different weighting factor for each loadcase so that you define more/less important ones.

    Sometimes you may want to normalize loadcases that have a much large order of magnitude in loads as well.

     

    numerically is as simple as adding a multiplier, so that the final weighted compliance is:

    sum (Wi * Ci)

     

    Do not attach too much to the numerical value of the compliance itself, but more on if it is reducing or not, compared to the initial value. Of course, adding a weightinh factor will change your final value, but the most important thing is understandnig what is it doing overall.

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