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A numerical investigation of elastoplastic deformation of cracks in tubular specimens subjected to combined torsional and axial loading

Dimosthenis Floros (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Anders Ekberg (Institutionen för tillämpad mekanik, Dynamik) ; Kenneth Runesson (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik)
International Journal of Fatigue (0142-1123). Vol. 91 (2016), P1, p. 171-182.
[Artikel, refereegranskad vetenskaplig]

Numerical simulations to investigate crack deformation in a pre-cracked cylindrical specimen subjected to mixed mode axial/torsional loading are carried out. Results are quantified in terms of crack face displacements and contrasted to experimental trends in the literature. The results aid in the understanding and interpretation of experimental results, in design of future experiments and in the development of models to predict mixed mode crack propagation. The analyses identify elastoplastic phenomena as major mechanisms to explain experimental results of mixed mode crack growth. These phenomena are interlinked in the general case, which significantly complicates the development of a general engineering model.

Nyckelord: Numerical simulation, Mixed mode, Plasticity



Denna post skapades 2016-06-16. Senast ändrad 2016-09-28.
CPL Pubid: 237762