Stress intensity factors for notched round bars using FEM

• Author(s): Fonseca, E.M.M. ; Melo, F.J.M.Q. de ; Valente, R.A.F.
• Date: 2006
• Persistent ID: http://hdl.handle.net/10198/1635
• Origin: Biblioteca Digital do IPB
• Subject(s): Stress intensity factor; Notch; Bending moment; Tubular structure
• Document Type: Article
• Language: English

Description

This study proposes alternative methods to estimate the stress intensity factors (SIF) of notched round components having an axial hole and subjected to an axial force or a bending moment. The method is based on analytical equations proposed by (Harris 1997) and on alternative formulation using finite element method (FEM). The objective of this work is a contribution in fracture mechanics applied to tubular systems with typical defects generated in service or a consequence of the fabrication method. Computational effort is saved with this element in the evaluation of the stress field across the section carrying the defect. Numerical examples are presented to illustrate the proposed method referring to tubular structures with different end constraints and containing a circumferential notch. The comparisons with the elastic finite element showed satisfactory results and good agreement with others references.