A Novel Analytical Solution on the Mode I SIF for Finite Plates with Slanted Cracks
| Autor: | Pedro M.G.P. Moreira, Francisco Q. de Melo, Paulo J. Tavares, Behzad V. Farahani |
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| Rok vydání: | 2020 |
| Předmět: |
Digital image correlation
Materials science Deformation (mechanics) business.industry 02 engineering and technology Function (mathematics) Structural engineering 021001 nanoscience & nanotechnology Finite element method Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Fracture (geology) 0210 nano-technology business Linear elastic fracture mechanics Stress intensity factor Earth-Surface Processes |
| Zdroj: | Procedia Structural Integrity. 28:218-225 |
| ISSN: | 2452-3216 |
| DOI: | 10.1016/j.prostr.2020.10.027 |
| Popis: | This contribution addresses a novel analytical procedure to evaluate the Stress Intensity Factors (SIF) of slant notches existing in flat plates employing the concept of the stress dead-zone. The compliance function formulation is extended to the Linear Elastic Fracture Mechanics (LEFM) to assess the fracture characterization. Therefore, the hypothesis is established for centrally oriented cracked specimens with various slant angles. To fulfil the study objectives, a hybrid experimental/computational study resorting to Digital Image Correlation (DIC) and Finite Element Method (FEM) is undertaken, aiming at the monitoring of the component deformation around the cracked region and subsequent SIF determination. A comparison is drawn on the SIF results extracted via the dead-zone concept, experimental and numerical studies to the reference solution, available in the literature. Besides, as a further investigation, the stress dead-zone region, which was analytically characterized, is also numerically verified through FEM. Encouraging results have been obtained which validate the dead-zone hypothesis for slant-cracked plates. |
| Databáze: | OpenAIRE |
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