Permissible contact stress at the curve knee within limited life
| Symbol | σ(I) |
|---|---|
| Unit | N/mm² |
| Attribute-ID | characteristic_point_within_limited_life_permissible_stress |
| Numeric ID | 18531 |
| Value Type | PMTechValue |
The sn-curve is defined by specifying the inflexion point (S) between the static and limited life section and the inflexion point (D) between the limited life and the fatigue strength section.
Or alternatively with the inflexion point (D) between limited life and fatigue strength section and the inclination k1 in the limited life section and the inclination k2 in the fatigue strength section.
In addition, the points (Y) in the static strength range, point (I) in the limited life section and point (L) in the fatigue strength section can optionally be specified. In some cases, the option of specifying the inclination can be omitted.