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 language | English |
|---|---|
| Title of host publication | New and Advanced Materials |
| Pages | 1718-1722 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2011 Mar 21 |
| Event | 2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011 - Guilin, China Duration: 2011 Apr 9 → 2011 Apr 11 |
Publication series
| Name | Advanced Materials Research |
|---|---|
| Volume | 197-198 |
| ISSN (Print) | 1022-6680 |
Other
| Other | 2nd International Conference on Manufacturing Science and Engineering, ICMSE 2011 |
|---|---|
| Country | China |
| City | Guilin |
| Period | 11-04-09 → 11-04-11 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
}
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 proceeding › Conference contribution
TY - GEN
T1 - Computational modeling of surface fracture of polyethylene acetabular cup in total artificial hip replacement
AU - Lai, Yuan Lung
AU - Chiang, Fu Tsai
AU - Hung, Jui Pin
PY - 2011/3/21
Y1 - 2011/3/21
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79952673066&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952673066&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.197-198.1718
DO - 10.4028/www.scientific.net/AMR.197-198.1718
M3 - Conference contribution
AN - SCOPUS:79952673066
SN - 9783037850350
T3 - Advanced Materials Research
SP - 1718
EP - 1722
BT - New and Advanced Materials
ER -