Subhash N

This high strain rate can be achieved with tensile Split Hopkinson Pressure Bar, which consists of two bars the dogbone shaped specimen is mounted between these two bars. out of these two bars one of which is called the incident bar, this incident bar is struck by a striker bar (which is propelled using high-pressure gas) which results in such high strain rates.

Can you please tell me how can I find the principal stresses acting on any element