Computational modeling of surface fracture of polyethylene acetabular cup in total artificial hip replacement

Yuan Lung Lai, Fu Tsai Chiang, Jui Pin Hung

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

Abstract

In this paper, a crack analysis model based on finite element method and virtual crack extension technique was proposed to investigate the occurrence of surface fracture of polyethylene acetabular cup under gait loadings. To this, a simplified hip joint model was created for facture analysis. The stress intensity factor (SIF) at crack site was estimated and used to evaluate the propagation of the surface crack. Current results show that under normal gait loading, the SIF at crack tip within polyethylene cup was predicted to be lower than the fatigue threshold of polyethylene material. However, under the heel strike instant, the crack tip SIF exceeds the fracture strength of polyethylene subject to gamma radiation, which may drive the crack to propagate to final fracture. Overall, the presented analysis model has demonstrated the probability of severe surface damage occurring in polyethylene cup under impact walking conditions. This provides a valuable reference to the improvement of the mechanical properties or design of bearing materials in clinical orthopedic application.

Original languageEnglish
Title of host publicationNew and Advanced Materials
Pages1718-1722
Number of pages5
DOIs
Publication statusPublished - 2011 Mar 21
Event2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011 - Guilin, China
Duration: 2011 Apr 92011 Apr 11

Publication series

NameAdvanced Materials Research
Volume197-198
ISSN (Print)1022-6680

Other

Other2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011
CountryChina
CityGuilin
Period11-04-0911-04-11

Fingerprint

Polyethylenes
Cracks
Stress intensity factors
Crack tips
Bearings (structural)
Orthopedics
Gamma rays
Fracture toughness
Fatigue of materials
Finite element method
Mechanical properties

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Lai, Y. L., Chiang, F. T., & Hung, J. P. (2011). Computational modeling of surface fracture of polyethylene acetabular cup in total artificial hip replacement. In New and Advanced Materials (pp. 1718-1722). (Advanced Materials Research; Vol. 197-198). https://doi.org/10.4028/www.scientific.net/AMR.197-198.1718
Lai, Yuan Lung ; Chiang, Fu Tsai ; Hung, Jui Pin. / Computational modeling of surface fracture of polyethylene acetabular cup in total artificial hip replacement. New and Advanced Materials. 2011. pp. 1718-1722 (Advanced Materials Research).
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Lai, YL, Chiang, FT & Hung, JP 2011, Computational modeling of surface fracture of polyethylene acetabular cup in total artificial hip replacement. in New and Advanced Materials. Advanced Materials Research, vol. 197-198, pp. 1718-1722, 2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011, Guilin, China, 11-04-09. https://doi.org/10.4028/www.scientific.net/AMR.197-198.1718

Computational modeling of surface fracture of polyethylene acetabular cup in total artificial hip replacement. / Lai, Yuan Lung; Chiang, Fu Tsai; Hung, Jui Pin.

New and Advanced Materials. 2011. p. 1718-1722 (Advanced Materials Research; Vol. 197-198).

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

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