Study on fatigue growth of multi-surface flaws in shaft under rotary bending by S-FEM
| Autor: | Hiroshi Kawai, Kazuhiro Suga, Masanori Kikuchi, Yoshitaka Wada |
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| Rok vydání: | 2017 |
| Předmět: |
Surface (mathematics)
Engineering business.industry Mechanical Engineering Computation 02 engineering and technology Bending Structural engineering Paris' law 021001 nanoscience & nanotechnology Finite element method 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Mesh generation Position (vector) General Materials Science 0210 nano-technology business Stress intensity factor |
| Zdroj: | Engineering Fracture Mechanics. 174:207-214 |
| ISSN: | 0013-7944 |
| DOI: | 10.1016/j.engfracmech.2016.11.001 |
| Popis: | In order to achieve reliable fatigue crack growth simulations of shafts under cyclic rotary bending by means of the finite element method, the Stress Intensity Factors (SIFs) along a flaw front have to be evaluated for an arbitrary rotational position. However, the evaluation of such SIFs takes much a great computation effort due to geometry modeling necessary to simulate the flaw propagation. In the present study, a fully automated finite element simulation for fatigue growth of flaw, by combining S-FEM, automatic mesh generation technique, and an effective evaluation method of the SIFs, is developed to analyze multi-surface flaw under rotary bending. Fatigue growth simulations of coplanar and non-coplanar parallel surface flaws in shafts under rotary bending are carried out to compare the crack growth behaviors between coplanar and non-coplanar surface flaws. |
| Databáze: | OpenAIRE |
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