Constraint https://www.lsoptsupport.com/examples/subpages/rbdo-truss/constraint https://www.lsoptsupport.com/@@site-logo/LS-Opt-Support-Logo480x80.png Constraint Constraints PanelSelect the Constraints panel.Choose the Response Stress as constraint.For the probability of exceeding the upper bound of the constraint enter 0.05.