Your goal in creating a given load set or constraint set is to simulate a particular real-world condition. For example, if you were modeling a screw, you might want to create a load set that simulates turning the screw with a screwdriver. In this case, the load set includes the following two loads:

To facilitate the application of the load, you add regions on either side of the screw slot. These regions simulate contact sites for the screwdriver as it presses against the slot when you apply torque. You then define two 25-pound loads in opposite directions relative to the Y axis of the coordinate system shown above. The opposition of these loads simulates torque applied to the screw as you twist it. You ensure that both loads are part of a load set called torque by giving them the Member of Set name torque.

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