Finite element modeling of photoplastic processes: Upset forging of rings

Abstract Critical numerical (finite-element) solutions for the upset forging of photoplastic rings were obtained to assess the validity of photoplasticity and the effect of hydrostatic pressure in yielding. When compared with experiments, qualitative and quantitative results from numerical solutions—in the distributions of three-dimensional (unloaded) strain components, isochromatic fringes and deformed profiles—supported the notion that photoplasticity is a feasible and accurate method.

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