The role of accumulated plasticity on yield surface evolution in pearlitic steel
Artikel i vetenskaplig tidskrift, 2023

In this paper, we analyze one specific assumption used in many cyclic plasticity models: The dependence of the yield surface evolution on the accumulated plasticity, i.e., the time-integrated plastic multiplier. We measure this scalar variable in carefully designed experiments and track the yield surface evolution. Our results show that this variable is insufficient to describe the isotropic or distortional hardening of the investigated steel, invalidating the commonly used assumption. The results highlight requirements for developing and verifying new isotropic and distortional hardening laws.

Isotropic hardening

Yield surface

Distortional hardening

Cyclic plasticity

Författare

Knut Andreas Meyer

Technische Universität Braunschweig

Johan Ahlström

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Mechanics of Materials

0167-6636 (ISSN)

Vol. 179 104582

Inverkan av anisotropi på utmattningsprickor under rullkontakt (CHARMEC MU34)

Chalmers järnvägsmekanik (CHARMEC), 2015-05-18 -- 2020-05-15.

Europeiska kommissionen (EU), 2015-05-18 -- 2020-05-15.

Ämneskategorier

Teknisk mekanik

Bearbetnings-, yt- och fogningsteknik

Övrig annan teknik

Annan samhällsbyggnadsteknik

DOI

10.1016/j.mechmat.2023.104582

Mer information

Senast uppdaterat

2023-12-20