### Abstract

Large deformation non-linear finite element models of T, V, L and B (Baldwin) orthodontic springs were developed and experimentally validated. Spring stiffnesses and moment/force ratios were computed. Compared to the T loop, under horizontal activation, the V loop was half as stiff, the L loop was equal, and the B spring was 10% as stiff. The moment/force ratio was 30% higher in the V configuration, while the B spring was less by 95%. The asymmetric L loop exerted a moment/force ratio that was 30% on the one side, but 180% in the opposite direction on the other side. With vertical activation, also compared to the T spring, the horizontal stiffnesses were 500% (V), 150% (L), and 30% (B). The concomitant vertical stiffnesses were 100%, 50% and 25%. The vertically activated moment/force ratios were nearly equal in the four springs. Experiments validated these FEM calculations.

Original language | English (US) |
---|---|

Pages (from-to) | 99-110 |

Number of pages | 12 |

Journal | Bio-Medical Materials and Engineering |

Volume | 7 |

Issue number | 2 |

State | Published - 1997 |

### Fingerprint

### Keywords

- FEM
- Force
- Moment
- Orthodontic springs

### ASJC Scopus subject areas

- Biophysics

### Cite this

*Bio-Medical Materials and Engineering*,

*7*(2), 99-110.

**Non-linear large deformation FE analysis of orthodontic springs.** / Chen, Jie; Chen, Ken; Katona, Thomas; Baldwin, James J.; Arbuckle, Gordon R.

Research output: Contribution to journal › Article

*Bio-Medical Materials and Engineering*, vol. 7, no. 2, pp. 99-110.

}

TY - JOUR

T1 - Non-linear large deformation FE analysis of orthodontic springs

AU - Chen, Jie

AU - Chen, Ken

AU - Katona, Thomas

AU - Baldwin, James J.

AU - Arbuckle, Gordon R.

PY - 1997

Y1 - 1997

N2 - Large deformation non-linear finite element models of T, V, L and B (Baldwin) orthodontic springs were developed and experimentally validated. Spring stiffnesses and moment/force ratios were computed. Compared to the T loop, under horizontal activation, the V loop was half as stiff, the L loop was equal, and the B spring was 10% as stiff. The moment/force ratio was 30% higher in the V configuration, while the B spring was less by 95%. The asymmetric L loop exerted a moment/force ratio that was 30% on the one side, but 180% in the opposite direction on the other side. With vertical activation, also compared to the T spring, the horizontal stiffnesses were 500% (V), 150% (L), and 30% (B). The concomitant vertical stiffnesses were 100%, 50% and 25%. The vertically activated moment/force ratios were nearly equal in the four springs. Experiments validated these FEM calculations.

AB - Large deformation non-linear finite element models of T, V, L and B (Baldwin) orthodontic springs were developed and experimentally validated. Spring stiffnesses and moment/force ratios were computed. Compared to the T loop, under horizontal activation, the V loop was half as stiff, the L loop was equal, and the B spring was 10% as stiff. The moment/force ratio was 30% higher in the V configuration, while the B spring was less by 95%. The asymmetric L loop exerted a moment/force ratio that was 30% on the one side, but 180% in the opposite direction on the other side. With vertical activation, also compared to the T spring, the horizontal stiffnesses were 500% (V), 150% (L), and 30% (B). The concomitant vertical stiffnesses were 100%, 50% and 25%. The vertically activated moment/force ratios were nearly equal in the four springs. Experiments validated these FEM calculations.

KW - FEM

KW - Force

KW - Moment

KW - Orthodontic springs

UR - http://www.scopus.com/inward/record.url?scp=0030633494&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030633494&partnerID=8YFLogxK

M3 - Article

VL - 7

SP - 99

EP - 110

JO - Bio-Medical Materials and Engineering

JF - Bio-Medical Materials and Engineering

SN - 0959-2989

IS - 2

ER -