Anomaly in Clamp Force Centroid

[vgvimalkanth]

Usually, I would consider the "Runner System" option under the "Geometry" for obtaining the X & Y coordinates for the centroid.

But in one iteration, I have found an anomaly. The "Centre of Mold" and "Centre of Gates" coordinates are different from the "Clamp Force: Centroid" that is shown in the result.

Occurrence is 1.

I have attached screenshots of the "Runner System" dialog box and "Clamp Force: Centroid" result for reference.

For the final iteration, which coordinates should be considered for providing the injection location?

[PascalGosset · Accepted solution]

Hi simulators,

The center of mold, the center of gates and the clamp force center are not the same things.

This one is calculated when the clamp force is maximum.

It can be very different from the 2 others centers by example if the part is not symmetric.

 

[vgvimalkanth]

Hi, thanks for your reply.

1. So should we considered only the Centroid location for providing the injection location?

2. Is there any calculations/ method to find the Centroid before running an analysis?

[PascalGosset · Accepted solution]

Hi simulators,

Ideally, you should center the sprue on the clamp force centroid.

This one is generally close to the part gravity center.

So you can get its location with your CAD software before launching your first simulation.

Otherwise, model a sprue where you think the clamp force centroid can be.

Launch the simulation and correct its position for the next simulations.

Last thing, concerning the small parts, the clamp forces are weak, so it is not necessary

to align the sprue on the forces centroid.

[vgvimalkanth]

Thank you!