The change of geometry during upset forging of a cylindrical rod was predicted and was described as a function of reduction in height, height-radius ratio, and shear fiction factor. It was assumed that the change of geometry occured in the path of low...
The change of geometry during upset forging of a cylindrical rod was predicted and was described as a function of reduction in height, height-radius ratio, and shear fiction factor. It was assumed that the change of geometry occured in the path of lower upper bound load. The upper bound load considering the changed shaped due to bulging was lower than that not considering the changed shape.