Case Study
Core shifting analysis of a coolbox external part
The box shown above is a double-walled isolation box. The part could not be correctly filled, as a large hole apeared on both sides of the box.
Two phases of analysis were made.
Phase 1 was Moldflow analysis to review the flow pattern and the pressure in the internal side of the mold wall.
To the right, 1/4 of the part filling is shown.
The filling pressure was calculated and applied during the 2nd phase of the analysis.
Phase 2 was a stress analysis on the geometry of the mold core and the pressure calculated during plastic flow was applied on the mold wall.
To the left, a deformation can be seen. The maximum deformation is 2 mm—the same thickness of the plastic wall.
The solution in this case was changing the gate location, since the formation of support holes was not aesthetically acceptable.