The correlation between the out-of-plane stress and the in-plane stress is established based on the bending modified J-Q theory and the out-of-plane constraint parameter TZ. Accordingly, an improved J-QZ-M constraint theory is developed to characterize the crack-tip fields by taking into account opening- and bending-dominated deformations in the ligament of the clamped single edge notch tension (SE(T)) specimens. Three-dimensional elastic-plastic finite element analyses (FEA) with a wide range of in-plane and out-of-plane constraints are performed to validate the proposed approach. It is found that the proposed J-QZ-M constraint theory can effectively quantify the crack-tip fields of SE(T) specimens, and the constraint parameter QZ exhibits approximately load- and distance-independence until large scale yielding (LSY).
Constraint analysis of thickness effects on fracture resistance behavior of clamped single-edge notch tension specimen / Gong, B.; Xia, C.; Lacidogna, G.; Xu, Q.; Liu, Y.; Li, Y.. - In: THEORETICAL AND APPLIED FRACTURE MECHANICS. - ISSN 0167-8442. - STAMPA. - 110:(2020), p. 102802. [10.1016/j.tafmec.2020.102802]
Constraint analysis of thickness effects on fracture resistance behavior of clamped single-edge notch tension specimen
Lacidogna G.;
2020
Abstract
The correlation between the out-of-plane stress and the in-plane stress is established based on the bending modified J-Q theory and the out-of-plane constraint parameter TZ. Accordingly, an improved J-QZ-M constraint theory is developed to characterize the crack-tip fields by taking into account opening- and bending-dominated deformations in the ligament of the clamped single edge notch tension (SE(T)) specimens. Three-dimensional elastic-plastic finite element analyses (FEA) with a wide range of in-plane and out-of-plane constraints are performed to validate the proposed approach. It is found that the proposed J-QZ-M constraint theory can effectively quantify the crack-tip fields of SE(T) specimens, and the constraint parameter QZ exhibits approximately load- and distance-independence until large scale yielding (LSY).File | Dimensione | Formato | |
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Revised Manuscript -20201005.pdf
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https://hdl.handle.net/11583/2899792