Simulate of edge and an internal crack problem and estimation of stress intensity factor through finite element method


YAYLACI M.

ADVANCES IN NANO RESEARCH, vol.12, no.4, pp.405-414, 2022 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 4
  • Publication Date: 2022
  • Doi Number: 10.12989/anr.2022.12.4.405
  • Journal Name: ADVANCES IN NANO RESEARCH
  • Journal Indexes: Science Citation Index Expanded, Scopus, Aerospace Database, Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.405-414
  • Keywords: crack analysis, finite element method, fracture mechanics, stress-intensity factor, MECHANICAL BENDING RESPONSE, BUCKLING ANALYSIS, CONTACT PROBLEM, NUMERICAL-ANALYSIS, PLATES, BEHAVIOR, LAYER, COMPOSITE, POROSITY, PROPAGATION

Abstract

In this study, the elastic plane problem of a layered composite containing an internal or edge crack perpendicular to its boundaries in its lower layer is examined using numerical analysis. The layered composite consists of two elastic layers having different elastic constants and heights. Two bonded layers rest on a homogeneous elastic half plane and are pressed by a rigid cylindrical stamp. In this context, the Finite Element Method (FEM) based software called ANSYS is used for numerical solutions. The problem is solved under the assumptions that the contacts are frictionless, and the effect of gravity force is neglected. A comparison is made with analytical results in the literature to verify the model created and the results obtained. It was found that the results obtained from analytical formulation were in perfect agreements with the FEM study. The numerical results for the stress-intensity factor (ST) are obtained for various dimensionless quantities related to the geometric and material parameters. Consequently, the effects of these parameters on the stress-intensity factor are discussed. If the FEM analysis is used correctly, it can be an efficient alternative method to the analytical solutions that need time.