There are several machines that have (rotating) cutting blades. For example the kitchen aid Vorwerk Thermomix can cut pieces of Food in hundreds of pieces within a few seconds. But why it is so?
If the blade hits something, there must act some Forces that cut it into pieces. How to compute the Forces that act on a blade to the Thing that the blade is cutting? Can I also compute stress values during the cutting process?
Is there any literature in Engineering mechanics that unravels the mystery of cutting?
And I wonder why knives are classified with Rockwell hardness. I would be happy about a Basic introduction into this topic.