Παρακαλώ χρησιμοποιήστε αυτό το αναγνωριστικό για να παραπέμψετε ή να δημιουργήσετε σύνδεσμο προς αυτό το τεκμήριο:
https://hdl.handle.net/123456789/1470| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | The critical influence of some “tiny” geometrical details on the stress field in a Brazilian Disc with a central notch of finite width and length |
| Συγγραφέας: | [EL] Κουρκούλης, Σταύρος[EN] Kourkoulis, Stavros [EL] Μαρκίδης, Χρήστος[EN] Markides, Christos [EL] Πάσιου, Ερμιόνη[EN] Pasiou, Ermioni [EL] Λουκίδης, Ανδρόνικος[EN] Loukidis, Andronikos [EL] Τριάντης, Δήμος[EN] Triantis, Dimos |
| Ημερομηνία: | 21/11/2021 |
| Περίληψη: | The role of some geometrical characteristics of the notches machined in circular discs, in order to determine the mode-I fracture toughness of brittle materials, is discussed. The study is implemented both analytically and numerically. For the analytic study advantage is taken of a recently introduced solution for the stress- and displacement-fields developed in a finite disc with a central notch of finite width and length and rounded corners. The variation of the stresses along strategic loci and the deformation of the perimeter of the notch obtained analytically are used for the calibration/validation of a flexible numerical model, which is then used for a parametric investigation of the role of geometrical features of the notched disc (thickness of the disc, length and width of the notch, radius of the rounded corners of the notch). It is concluded that the role of the width of the notch is of critical importance. Both the analytic and the numerical studies indicate definitely that ignoring the accurate geometric shape of the notch leads to erroneous results concerning the actual stress field around the crown of the notch. Therefore, it is possible that misleading values of the fracture toughness of the material of the disc may be obtained. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 18 |
| DOI: | 10.3221/IGF-ESIS.59.27 |
| EISSN: | 1971-8993 |
| Θεματική κατηγορία: | [EL] Μηχανική, γενικά[EN] Engineering, general |
| Λέξεις-κλειδιά: | Brazilian disc; Central notch; Analytical solution; numerical analysis; finite elements |
| Κάτοχος πνευματικών δικαιωμάτων: | © The Author(s) 2021. |
| Όροι και προϋποθέσεις δικαιωμάτων: | This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://www.fracturae.com/index.php/fis/article/view/3359 |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://www.fracturae.com/index.php/fis/index |
| Τίτλος πηγής δημοσίευσης: | Frattura ed Integrità Strutturale (Fracture and Structural Integrity) |
| Τεύχος: | 59 |
| Τόμος: | 16 |
| Σελίδες τεκμηρίου (στην πηγή): | 405-422 |
| Σημειώσεις: | This research is co-financed by Greece and the European Union (European Social Fund - ESF) through the Operational Programme «Human Resources Development, Education and Lifelong Learning 2014-2020» in the context of the project “Critical assessment and revision of the standard regarding the determination of the Mode I fracture toughness, KIC, of brittle building materials using a combination of innovative experimental techniques, numerical simulations and analytical methods” (MIS 5049181). |
| Εμφανίζεται στις συλλογές: | Ερευνητικές ομάδες |
Αρχεία σε αυτό το τεκμήριο:
| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
|---|---|---|---|---|---|---|---|
| published.pdf | 6.35 MB | Adobe PDF | - |  | Δείτε/ανοίξτε |