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Determining mode I cohesive law of Pinus pinaster by coupling double cantilever beam test with digital image correlation
| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | J. Xavier M. Oliveira J.J.L. Morais M.F.S.F. de Moura |
| Abstract | The direct identification of the cohesive law in pure mode I of Pinus pinaster is addressed. The approach couples the double cantilever beam (DCB) test with digital image correlation (DIC). Wooden beam specimens loaded in the radial-longitudinal (RL) fracture propagation system are used. The strain energy release rate in mode I ( ) is uniquely determined from the load-displacement ( ) curve by means of the compliance-based beam method (CBBM). This method relies on the concept of equivalent elastic crack length ( ) and therefore does not require the monitoring of crack propagation during test. The crack tip opening displacement in mode I is determined from the displacement field at the initial crack tip. The cohesive law in mode I is then identified by numerical differentiation of the relationship. Moreover, the proposed procedure is validated by finite element analyses including cohesive zone modelling. It is concluded that the proposed data reduction scheme is adequate for assessing the cohesive law in pure mode I of P. pinaster |
| Related Links | http://www.gruppofrattura.it/pdf/rivista/numero31/numero_31_art_2.pdf |
| e-ISSN | 19718993 |
| DOI | 10.3221/IGF-ESIS.31.02 |
| Journal | Frattura ed Integrità Strutturale |
| Issue Number | 31 |
| Volume Number | 9 |
| Language | English |
| Publisher | Gruppo Italiano Frattura |
| Publisher Date | 2015-01-01 |
| Publisher Place | Italy |
| Access Restriction | Open |
| Subject Keyword | Mechanical engineering and machinery Structural engineering (General) Wood Mode I Fracture Mechanics Double Cantilever Beam Test Cohesive Law Digital Image Correlation |
| Content Type | Text |
| Resource Type | Article |
