Rotor Disk Recess Design for Stress Distribution

The invention applies local quality by creating a recess only in the regions where stress concentration occurs (near the orifices) while maintaining the original thickness in other areas. This localized modification strengthens the critical zones without increasing the mass of the entire fabric, thereby improving strength without the negative centrifugal effects of global thickening.

The invention transitions from modifying the fabric in the radial-thickness dimension (increasing thickness) to modifying it in the axial dimension (creating a recess). This dimensional shift allows stress distribution improvement without adding mass, as the recess redistributes stress through geometric configuration rather than material quantity.

The recess is designed to be localized around the orifices where stress concentration occurs, rather than creating openings throughout the fabric. This localized approach modifies stress distribution in the critical areas while maintaining the fabric's integrity for ventilation in the surrounding regions, thus avoiding airflow disruption.

The recess consists of an alternation of first parts surrounding each orifice and second parts between adjacent orifices. This segmented structure allows stress relief at each orifice location while the second parts maintain fabric continuity for ventilation, preventing uncontrolled air circulation between cavities.

The recess is segmented into first parts and second parts with different radial positions. This segmentation allows the recess to be manufactured using standard CNC machining operations by defining it through alternating radial positions, making the complex geometry achievable with conventional manufacturing processes.

The recess features curved radial boundaries defined by alternating first and second parts. These curved geometries are easily generated using standard CNC machining tools and techniques, allowing the complex stress-distributing shape to be manufactured with conventional equipment rather than requiring specialized processes.