| Autor: |
Amit Patel, Eiichi Sato, Naohiro Shichijo, Ichiro Hirata, Takeshi Takagi |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Composites Part C: Open Access, Vol 9, Iss , Pp 100325- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2666-6820 |
| DOI: |
10.1016/j.jcomc.2022.100325 |
| Popis: |
This research work focused on simulating different fracture modes in the high-stress concentrated region of an advanced SiC/SiC CMC component at the macroscopic scale in consideration of increasing cost and time during experimental tests of CMCs. A hybrid of extended-finite-element-method (XFEM) and cohesive-zone-modeling (CZM) was utilized to predict mode-I and mode-II fracture behavior, respectively. The cohesive element (CE) layers were used as fiber-tow interfaces in the stress-concentrated region where mode-II failure was supposed to occur. The 1st crack initiation and its further propagation were found to be dependent on XFEM damage criteria, whereas delamination was observed at the damage-front CE layers. The simulated force-displacement relationships were compared with the experimental ones, where stiffness and serrations in the force-displacement curve corresponding to the delamination matched quite well. With concern to predicting the fracture behavior in a complex-shape component of SiC/SiC CMCs, XFEM with CZM methodology can be a reliable method in the near future. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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