Plastic Tensile Instability Analysis of Nuclear Fuel Rod Cracking

We performed analysis of plastic tensile instability conditions in pressurized cylindrical nuclear fuel rods, including the effects of biaxial stress and the instability modes of failure. The loss in strain hardening capacity of the material due to irradiation effects reduced the instability strains very substantially. Experimental fuel rod failure results were later found to be in excellent agreement with the theoretical predictions.

 


 

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