KSME International Journal

, Volume 16, Issue 2, pp 182–191 | Cite as

Stress intensity factors for elliptical arc through cracks in mechanical joints by virtual crack closure technique

  • Sung Pil Heo
  • Won Ho Yang
  • Cheol Kim
Materials & Fracture · Solids & Structures · Dynamics & Control · Production & Design


The reliable stress intensity factor analysis is required for fracture mechanics design or safety evaluation of mechanical joints at which cracks often initiate and grow. It has been reported that cracks in mechanical joints usually nucleate as corner cracks at the faying surface of joints and grow as elliptical arc through cracks, In this paper, three dimensional finite element analyses are performed for elliptical arc through cracks in mechanical joints. Thereafter stress intensity factors along elliptical crack front including two surface points are determined by the virtual crack closure technique. Virtual crack closure technique is a method to calculate stress intensity factor using the finite element analysis and can be applied to non-orthogonal mesh. As a result, the effects of clearance on the stress intensity factor are investigated and crack shape are then predicted.

Key Words

Stress Intensity Factor Elliptical Arc Through Crack Virtual Crack Closure Technique Finite Element Analysis Mechanical Joint Clearance Contact 


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Copyright information

© The Korean Society of Mechanical Engineers (KSME) 2002

Authors and Affiliations

  1. 1.Fracture Mechanics Lab, School of Mechanical EngineeringSungkyunkwan UniversityKyunggi-doKorea

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