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Shakedown of porous materials
- Source :
- International Journal of Plasticity, International Journal of Plasticity, Elsevier, 2017
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- The paper is devoted to the determination of shakedown limit states of porous ductile materials under cyclically repeated loads by considering the hollow sphere model with von Mises matrix. We adopt Melan's statical approach based on time-independent residual stress fields. First of all, we determine the exact solution for the pure hydrostatic loading. It turns out that the collapse occurs by fatigue. Next, suitable trial stress fields are built with additional terms to capture the shear effects. This theoretical fatigue criterion of porous materials agreed with numerical simulations and experimental results provided in literature according to which, in ductile metals, the strain to fracture under cyclic loading is considerably lower than the one reached monotonically. Finally, the built criterion is compared to numerical simulations derived by both shakedown direct method and incremental simulations.
- Subjects :
- Materials science
business.industry
Mechanical Engineering
02 engineering and technology
Structural engineering
021001 nanoscience & nanotechnology
Shakedown
law.invention
[SPI.MAT]Engineering Sciences [physics]/Materials
[SPI]Engineering Sciences [physics]
020303 mechanical engineering & transports
Exact solutions in general relativity
0203 mechanical engineering
Shear (geology)
Mechanics of Materials
Residual stress
law
von Mises yield criterion
General Materials Science
Hydrostatic equilibrium
0210 nano-technology
business
Porosity
Porous medium
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 07496419
- Database :
- OpenAIRE
- Journal :
- International Journal of Plasticity, International Journal of Plasticity, Elsevier, 2017
- Accession number :
- edsair.doi.dedup.....3ff107e444108a3e09a644ec2b6edd9a