Hello, I am trying to figure out how can I apply two different design values with maximum and minimum goals in an objective function for an optimization process in ABAQUS. More specifically, I want to increase the stiffness of my solid part and increase its first modal frequency by setting up the design values as minimum strain energy and maximum modal frequency. But I can not apply these two conditions under the same window of objective function and with two different objective functions the optimization process just does not run.

Thanks in advance.