Fatigue life prediction under biaxial falstaff loading using statistical volume element based multiscale modeling

Jinjun Zhang, Kuang Liu, Aditi Chattopadhyay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This article presents the fatigue life prediction in a cruciform specimen of 2024-T351 aluminum alloy subjected to biaxial FALSTAFF loading. An energyand slip-based multiscale damage criterion is developed to capture the fatigue crack formation in crystalline metallic materials. In these materials, there are two stages in crack initiation: nucleation of micro cracks and coalescence of micro cracks into major cracks. In the first stage, micro cracks generate from intermetallic particles and extend into surrounding grains. For the FCC crystalline structure, fatigue damage increments in four dependent slip planes are calculated and accumulated to measure micro crack. In the second stage, the micro cracks grow and coalesce into major cracks. Subsequently, a meso-statistical volume element model is developed to represent the microstructure of the material. Finally, a root mean square method is introduced to take into account FALSTAFF loading. Using the root mean square (RMS) method, the loading history for tests is analyzed to determine the RMS maximum and minimum stresses. The multiscale damage criterion, statistical volume element and RMS method were validated using previously conducted fatigue tests on cruciform samples. The fatigue life and crack direction predicted using the developed model correlate well with the experiments.

Original languageEnglish (US)
Title of host publicationASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Pages625-634
Number of pages10
Volume8
DOIs
StatePublished - 2012
EventASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012 - Houston, TX, United States
Duration: Nov 9 2012Nov 15 2012

Other

OtherASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012
CountryUnited States
CityHouston, TX
Period11/9/1211/15/12

Fingerprint

Fatigue of materials
Cracks
Crack initiation
Crystalline materials
Fatigue damage
Coalescence
Intermetallics
Aluminum alloys
Nucleation
Microstructure
Experiments
Fatigue cracks

Keywords

  • Biaxial FALSTAFF loading
  • Damage criterion
  • Multiscale modeling
  • Statistic volume element

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Zhang, J., Liu, K., & Chattopadhyay, A. (2012). Fatigue life prediction under biaxial falstaff loading using statistical volume element based multiscale modeling. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) (Vol. 8, pp. 625-634) https://doi.org/10.1115/IMECE2012-86341

Fatigue life prediction under biaxial falstaff loading using statistical volume element based multiscale modeling. / Zhang, Jinjun; Liu, Kuang; Chattopadhyay, Aditi.

ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 8 2012. p. 625-634.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, J, Liu, K & Chattopadhyay, A 2012, Fatigue life prediction under biaxial falstaff loading using statistical volume element based multiscale modeling. in ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). vol. 8, pp. 625-634, ASME 2012 International Mechanical Engineering Congress and Exposition, IMECE 2012, Houston, TX, United States, 11/9/12. https://doi.org/10.1115/IMECE2012-86341
Zhang J, Liu K, Chattopadhyay A. Fatigue life prediction under biaxial falstaff loading using statistical volume element based multiscale modeling. In ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 8. 2012. p. 625-634 https://doi.org/10.1115/IMECE2012-86341
Zhang, Jinjun ; Liu, Kuang ; Chattopadhyay, Aditi. / Fatigue life prediction under biaxial falstaff loading using statistical volume element based multiscale modeling. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 8 2012. pp. 625-634
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