Find Schmid Factors¶
Group (Subgroup)¶
Statistics (Crystallographic)
Description¶
This Filter calculates the Schmid factor of each Feature given its average orientation and a user defined loading axis. The Schmid Factor is the combination of the component of the axial force F that lies parallel to the slip direction and the component that lies perpendicular to the slip plane. The equation for the Schmid Factor is given as:
Schmid Factor = (cos φ cos λ)
The angle φ is the angle between the tensile axis and the slip plane normal, and λ is the angle between the tensile axis and the slip direction in the slip plane.
The Filter determines the Schmid factor for each Feature by using the above equation for all possible slip systems (given the Feature's crystal structure). The largest Schmid factor from all of the slip systems is stored for the Feature. Only the Schmid factor is used in determining which slip system's Schmid factor to report. The critical resolved shear stress for the different slip systems is not considered.
Parameters¶
| Name | Type | Description |
|---|---|---|
| Loading Direction | float (3x) | The loading axis for the sample |
| Store Angle Components of Schmid Factor | bool | Whether to store the φ and λ for each Feature |
| Override Default Slip System | bool | Allows the user to manually input the slip plane and slip direction |
| Slip Plane | float (3x) | Vector defining the slip plane normal. Only needed if Override Default Slip System is checked |
| Slip Direction | float (3x) | Vector defining the slip direction. Only needed if Override Default Slip System is checked |
Required Geometry¶
Not Applicable
Required Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Feature Attribute Array | Phases | int32_t | (1) | Specifies to which Ensemble each Feature belongs |
| Feature Attribute Array | AvgQuats | float | (4) | Specifies the average orienation of each Feature in quaternion representation |
| Ensemble Attribute Array | CrystalStructures | uint32_t | (1) | Enumeration representing the crystal structure for each Ensemble |
Created Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Feature Attribute Array | Schmids | Float | (1) | Value of the Schmid factor for the most favorably oriented slip system (i.e., the one with the highest Schmid factor) |
| Feature Attribute Array | SlipSystems | Int | (1) | Enumeration of the slip system that has the highest Schmid factor |
| Feature Attribute Array | Poles | Ints | (3) | Specifies the crystallographic pole that points along the user defined loading direction |
| Feature Attribute Array | SchmidPhis | Float | (1) | Angle between tensile axis and slip plane normal. Only created if Store Angle Components of Schmid Factor is checked |
| Feature Attribute Array | SchmidLambdas | Float | (1) | Angle between tensile axis and splid drirection. Only created if Store Angle Components of Schmid Factor is checked |
Example Pipelines¶
- (05) SmallIN100 Crystallographic Statistics
License & Copyright¶
Please see the description file distributed with this Plugin
DREAM.3D Mailing Lists¶
If you need more help with a Filter, please consider asking your question on the DREAM.3D Users Google group!