Schmid Factor (for crystallographic planes)

Introduction to Schmid Factor (for crystallographic planes)

The Schmid factor is a dimensionless quantity that describes the favorability of slip on a specific crystallographic plane in a particular crystal structure under a given set of loading conditions. The Schmid factor is calculated using the formula: σ * cos(θ), where σ is the resolved shear stress, and θ is the angle between the loading direction and the normal to the slip plane.

Parameter usage:

• σ= resolved shear stress (0 to 1)
• θ= angle between the loading direction and the normal to the slip plane (0 to 90 degrees)
• φ= angle of the loading direction (0 to 360 degrees)

Output:

• Schmid Factor= the favorability of slip on a specific crystallographic plane

Data validation

The resolved shear stress (σ) should be between 0 and 1, the angle (θ) should be between 0 and 90 degrees, and the angle (φ) should be between 0 and 360 degrees.

Summary

The Schmid factor is an important parameter in understanding the mechanical behavior of crystalline materials under specific loading conditions. It helps in predicting the critical slip systems in a crystal lattice.