Influence of local meshing size on stress intensity factor of orthopedic lag screw

M. N. Husain, R. Daud, K. S. Basaruddin, F. Mat, Mohd Yazid Bajuri, A. K. Arifin

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

Abstract

Linear elastic fracture mechanics (LEFM) concept is generally used to study the influence of crack on the performance of structures. In order to study the LEFM concept on damaged structure, the usage of finite element analysis software is implemented to do the simulation of the structure. Mesh generation is one of the most crucial procedures in finite element method. For the structure that crack or damaged, it is very important to determine the accurate local meshing size at the crack tip of the crack itself in order to get the accurate value of stress intensity factor, KI. Pre crack will be introduced to the lag screw based on the von mises' stress result that had been performed in previous research. This paper shows the influence of local mesh arrangement on numerical value of the stress intensity factor, KI obtained by the displacement method. This study aims to simulate the effect of local meshing which is the singularity region on stress intensity factor, KI to the critical point of failure in screw. Five different set of wedges meshing size are introduced during the simulation of finite element analysis. The number of wedges used to simulate this research is 8, 10, 14, 16 and 20. There are three set of numerical equations used to validate the results which are brown and srawley, gross and brown and Tada equation. The result obtained from the finite element software (ANSYS APDL) has a positive agreement with the numerical analysis which is Brown and Srawley compared to other numerical formula. Radius of first row size of 0.014 and singularity element with 14 numbers of wedges is proved to be the best local meshing for this study.

Original languageEnglish
Title of host publication3rd Electronic and Green Materials International Conference 2017, EGM 2017
PublisherAmerican Institute of Physics Inc.
Volume1885
ISBN (Electronic)9780735415652
DOIs
Publication statusPublished - 26 Sep 2017
Event3rd Electronic and Green Materials International Conference 2017, EGM 2017 - Aonang Krabi, Thailand
Duration: 29 Apr 201730 Apr 2017

Other

Other3rd Electronic and Green Materials International Conference 2017, EGM 2017
CountryThailand
CityAonang Krabi
Period29/4/1730/4/17

Fingerprint

orthopedics
stress intensity factors
screws
time lag
cracks
wedges
fracture mechanics
computer programs
crack tips
numerical analysis
mesh
critical point
finite element method
simulation
radii

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Husain, M. N., Daud, R., Basaruddin, K. S., Mat, F., Bajuri, M. Y., & Arifin, A. K. (2017). Influence of local meshing size on stress intensity factor of orthopedic lag screw. In 3rd Electronic and Green Materials International Conference 2017, EGM 2017 (Vol. 1885). [020174] American Institute of Physics Inc.. https://doi.org/10.1063/1.5002368

Influence of local meshing size on stress intensity factor of orthopedic lag screw. / Husain, M. N.; Daud, R.; Basaruddin, K. S.; Mat, F.; Bajuri, Mohd Yazid; Arifin, A. K.

3rd Electronic and Green Materials International Conference 2017, EGM 2017. Vol. 1885 American Institute of Physics Inc., 2017. 020174.

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

Husain, MN, Daud, R, Basaruddin, KS, Mat, F, Bajuri, MY & Arifin, AK 2017, Influence of local meshing size on stress intensity factor of orthopedic lag screw. in 3rd Electronic and Green Materials International Conference 2017, EGM 2017. vol. 1885, 020174, American Institute of Physics Inc., 3rd Electronic and Green Materials International Conference 2017, EGM 2017, Aonang Krabi, Thailand, 29/4/17. https://doi.org/10.1063/1.5002368
Husain MN, Daud R, Basaruddin KS, Mat F, Bajuri MY, Arifin AK. Influence of local meshing size on stress intensity factor of orthopedic lag screw. In 3rd Electronic and Green Materials International Conference 2017, EGM 2017. Vol. 1885. American Institute of Physics Inc. 2017. 020174 https://doi.org/10.1063/1.5002368
Husain, M. N. ; Daud, R. ; Basaruddin, K. S. ; Mat, F. ; Bajuri, Mohd Yazid ; Arifin, A. K. / Influence of local meshing size on stress intensity factor of orthopedic lag screw. 3rd Electronic and Green Materials International Conference 2017, EGM 2017. Vol. 1885 American Institute of Physics Inc., 2017.
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