One sided constraints are used to simulate the effect of an uneven distribution of melt flow around a core pin or part insert, that has been constrained in one direction, but is free to move in the opposite direction.
Historically in this product, all constraints for warpage, stress and core-shift analyses have been two-sided. As a consequence, if a constraint prevents displacement in one direction, then this constraint also prevents displacement in the opposite direction. With the one-sided constraint feature, you set translational degrees of freedom at selected nodes in all three plane directions.
One-sided constraints are supported for all mesh types when performing a core shift analysis, and can be applied to components with the property type Part Insert (3D) or Core (3D).