Computation of stress intensity factors in functionally graded materials using partition-of-unity meshfree method
| Autor: | Surjya Kumar Maiti, N. Muthu, Brian Falzon, Irene Guiamatsia |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Computation
05 social sciences Mathematical analysis Mode (statistics) Aerospace Engineering 050109 social psychology Crack closure Partition of unity Approximation error 0502 economics and business 0501 psychology and cognitive sciences Galerkin method Algorithm 050203 business & management Stress intensity factor Smoothing Mathematics |
| Zdroj: | The Aeronautical Journal. 116:1263-1287 |
| ISSN: | 2059-6464 0001-9240 |
| DOI: | 10.1017/s0001924000007636 |
| Popis: | This paper describes the computation of stress intensity factors (SIFs) for cracks in functionally graded materials (FGMs) using an extended element-free Galerkin (XEFG) method. The SIFs are extracted through the crack closure integral (CCI) with a local smoothing technique, non-equilibrium and incompatibility formulations of the interaction integral and the displacement method. The results for mode I and mixed mode case studies are presented and compared with those available in the literature. They are found to be in good agreement where the average absolute error for the CCI with local smoothing, despite its simplicity, yielded a high level of accuracy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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