Analytical formulation of the theoretical subsequent yield surfaces of metals with strain-hardening and Bauschinger effect in an ideal tension-torsion test

Summary The evolution of the yield locus of metals in the strain-hardening range is analytically studied in the - plane. The problem, of theoretical and technical interest, is completely solved by applying the theory of slip and by taking into account the Bauschinger effect.

---

Sommario Si studia analiticamente l'evoluzione della superficie di plasticizzazione dei metalli in fase di incrudimento nel piano - . Il problema, che riveste notevole interesse teorico ed applicativo, viene risolto in forma completa nell'ambito della teoria degli slip e prendendo opportunamente in conto l'effetto Bauschinger.

---

---

This work was done under the auspices of the Consiglio Nazionale delle Ricerche.