|Affiliations:||Mathematical Institute of the Serbian Academy of Sciences and Arts||Title:||An analysis of crack propagation and a plasticity-induced closure effect||Journal:||Scientific Technical Review||Volume:||60||Issue:||2||First page:||14||Last page:||19||Issue Date:||2010||Rank:||M51||ISSN:||1820-0206||URL:||http://www.vti.mod.gov.rs/ntp/rad2010/2-10/2/02.pdf||Abstract:||
In the present paper, a few computational models for the crack growth analysis are improved. The improvements consist of including the effect of the plasticity-induced crack closure, i.e. the effective stress intensity factor is computed through the finite element method in order to account the effect of plasticity-induced crack closure on fatigue crack growth. Thus, corrective factors for the effect of the plasticity-induced crack closure are determined here.
The improved models are noticed to provide a fairly good correlation with available experimental data. Furthermore, the calculated results show that the plasticity-induced crack closure has a significant effect on fatigue crack growth and flawed structure life.
|Keywords:||material fatigue | crack | fatigue crack | crack growth | technological improvements | plastification | calculation method | finite element method||Publisher:||Military Technical Institute, Belgrade|
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