Shrinkage models

There are several shrinkage models used in this product, depending upon how much information about the material is available in the Midplane, Dual Domain, and 3D solutions.

The following options are available:

Shrinkage model (Midplane and Dual Domain)

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.

Shrinkage model (3D)

Generic shrinkage model

This option is the default. It currently supports all thermoplastics and thermoset processes.

Uncorrected residual stress (3D)

This option currently supports all thermoplastics processes. With this option, molded-in residual stress results are generated in the 3D warpage analysis.

• Residual stress calculation: ON - under the flow section
• Residual stress model is used - in the warp section.