Unevenness
5.2.10
Fig. 1
Earing due to planar anisotropy after five deep drawings
The unevenness z of a deep-drawn part can be calculated in two ways. With the first type of unevenness za , the height difference Δh is related to the average bowl height. In the second type, zb , Δh is related to the minimum bowl height hmin.16
Eqn. 1
Eqn. 2
Eqn. 3
| Elevation change | Δ h | = | mm | ||
| Relative unevenness | za | = | % | ||
| zb | = | % |
| Uneven height | hmax | = | mm | |||
| hmin | = | mm |
Calc 1
Unevenness
Fig. 2
Unevenness
16
Ostermann, F. / Anwendungstechnologie Aluminium / Springer / Berlin / 1998 / …