Figure 12. Field of equal difference of principal stresses σ1 - σ3 around the concentrator – variant D

From

Possibilities of Optimizing the Shape and Geometry of Castellated Beams Using Numerical and Experimental Modeling

Miroslav Pástor, Jozef Bocko, Tomáš Kula, Cosmin-Stefan Roszkos

American Journal of Mechanical Engineering. 2016, 4(7), 357-362 doi:10.12691/ajme-4-7-22