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Example: Modeling Specialized Loads with a Cylindrical Coordinate System
You can use user-defined coordinate systems to apply specialized loads, such as loads with an unusual force profile. For example, let us say that you want to find out how the plate below reacts to a nonuniform radial force applied to only a 120 segment of the hole, as though a rod smaller than the radius of the hole were pulling outward against the far surface of the hole.
To accomplish this, you could create a specialized load as a function of a cylindrical coordinate system, as follows:
In this case, you would create a cylindrical coordinate system as shown above. You would then create a force-per-unit-area load based on the following symbolic function:
if(theta>=–pi/3&&theta<=pi/3,cos(theta),0)
The load resulting from this function has a sinusoidal profile, with the load at its greatest where T=0. The load tapers symmetrically about T=0, reaching a 0 force at T=60 and T=–60. This load profile is similar to that of a bearing load. However, Creo Simulate's bearing load always applies to a 180 segment, while this load applies to a 120 segment.