Residual strain or Uncorrected residual stress or CRIMS

[DerosAzaman1020]

1) What differences for this three of shrinkage models use in simulation?

2) What the best model should be setting in simulation to get the correct prediction results for warp, shrinkage, in cavity residual stress or etc.

[nordhb]

Hi,
there are several shrinkage models used in this product, depending upon how much information about the material is available.
The following options are available for Midplane and Dual Domain mesh types:

Uncorrected residual stress
This option will be selected when there is no shrinkage data available for the material.
In this case, the Fill+Pack analysis predicts the residual stress values within in the part,
based on the flow and thermal history during the molding cycle.

Corrected residual in-mold stress (CRIMS)
This option is the default when shrinkage testing has been performed on the material.
This model is the most accurate because it is obtained by correlating actual tested shrinkage values with Fill+Pack analysis predictions.

Residual strain
This option is selected for those materials where the CRIMS model was found to not adequately describe the shrinkage behavior of the material.

For further information look in Help system or wikihelp at:
http://wikihelp.autodesk.com/Simulation_Moldflow/enu/2013/Help/2.0Insight/2891-Analysis2891/3434-Shr... 

Hope this clarifies.

Regards,
Berndt

[nordhb]

Hi,

just additional information if running Warp on 3D mesh type:
Shrinkage prediction method for 3D models
http://wikihelp.autodesk.com/Simulation_Moldflow/enu/2013/Help/2.0Insight/2891-Analysis2891/3434-Shr... 

Regards,

Berndt