PhD Fekete - SZIE version - 2.2 - Szent István Egyetem

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Doctoral School: Mechanical Engineering PhD School Thematic group: Basics of Agriculture Machine Engineering Director: Supervisor: Co-supervisor: Prof. Dr. István Farkas Doctor of Technical Science Faculty of Mechanical Engineering Szent István University, Gödöllő, Hungary Prof. Dr. Béla Málnási-Csizmadia Candidate of Technical Science Faculty of Mechanical Engineering Szent István University, Gödöllő, Hungary Prof. Dr. Patrick De Baets Doctor of Philosophy Faculty of Engineering and Architecture Ghent University, Ghent, Belgium ……………………………………… Director of the Doctoral School ……………………………………… Supervisor
CONTENTS NOMENCLATURE AND ABBREVIATIONS...........................................................................1 1. INTRODUCTION AND OBJECTIVES.............................................................................7 1.1. Involved Research Partners....................................................................................7 1.2. Motivation ................................................................................................................7 1.3. Aims of the PhD thesis.............................................................................................9 2. LITERATURE REVIEW..................................................................................................11 2.1. Anatomical review of the human knee joint........................................................11 2.1.1. Structural build-up of the bone ...........................................................................11 2.1.2. Structural build-up of the knee and the major bones ..........................................12 2.1.3. The cartilage system ...........................................................................................15 2.1.4. Ligaments and tendons .......................................................................................16 2.1.5. Major segments of the flexion angle...................................................................18 2.2. Analytical-mechanical models of squat................................................................20 2.2.1. Introduction.........................................................................................................20 2.2.2. Human locomotion and kinetics .........................................................................21 2.2.3. Mathematical, phenomenological models...........................................................22 2.2.4. Mathematical, anatomical models.......................................................................25 2.3. Numerical-mechanical models of squat ...............................................................49 2.3.1. Introduction.........................................................................................................49 2.3.2. General numerical models ..................................................................................53 2.3.3. Sliding-rolling phenomenon – Numerical models ..............................................53 2.3.4. Sliding-rolling phenomenon – Experimental methods........................................61 3. MATERIALS AND METHODS ......................................................................................65 3.1. Methodology...........................................................................................................65 3.2. Conclusions about the early analytical-kinetical models....................................66 3.3. New analytical-kinetical model.............................................................................71 3.3.1. Introduction.........................................................................................................71 3.3.2. Limitations and advancements of the model.......................................................72 3.3.3. Free-body diagram of the analytical-kinetical model .........................................73 3.3.4. Mathematical description of the model...............................................................76 3.3.5. Remarks about the model....................................................................................78 3.4. Experiments on human subjects...........................................................................79 3.4.1. Introduction.........................................................................................................79 3.4.2. Aims of the experiment.......................................................................................80 3.4.3. Description of the experimental model...............................................................80 3.4.4. The measurement setup.......................................................................................81 3.4.5. Measurement of the center of gravity line ..........................................................85 3.4.6. Construction of the dimensionless quantities and angles....................................89 3.4.7. Data processing...................................................................................................94 3.4.8. Experimental results............................................................................................97 3.4.9. Conclusions about the experiment ....................................................................103
Page 1: SZENT ISTVÁN UNIVERSITY KINETICS A
Page 5 and 6: NOMENCLATURE AND ABBREVIATIONS F pf
Page 7 and 8: ψ : Angle between the quadriceps t
Page 9 and 10: v CTt : Tangential velocity compone
Page 11 and 12: Introduction 1. INTRODUCTION AND OB
Page 13 and 14: 1.3. Aims of the PhD thesis Introdu
Page 15 and 16: Literature review 2. LITERATURE REV
Page 17 and 18: Literature review Figure 2.3. The f
Page 19 and 20: Literature review Figure 2.6. Patel
Page 21 and 22: Literature review Figure 2.8. Compo
Page 23 and 24: Literature review The knee carries
Page 25 and 26: Literature review For this reason,
Page 27 and 28: Literature review Figure 2.12. Thre
Page 29 and 30: Literature review As a short overvi
Page 31 and 32: Literature review Moment arm 60 [mm
Page 33 and 34: Literature review I. They demonstra
Page 35 and 36: Literature review The presented mod
Page 37 and 38: Literature review ε angle [˚] 100
Page 39 and 40: Literature review Fpf/Fq [-] 1.2 1
Page 41 and 42: Literature review β angle [˚] Mal
Page 43 and 44: Literature review Figure 2.35. Mech
Page 45 and 46: Literature review Moment arm 60 [mm
Page 47 and 48: Literature review Let us follow the
Page 49 and 50: Literature review Finally, the pate
Page 51 and 52: Literature review Figure 2.43. Tota
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Literature review One great advanta
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Literature review Implant wear is t
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2.3.2. General numerical models Lit
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a) The tibia plateau is a flat surf
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Literature review From their calcul
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Literature review Although a simila
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Literature review Slide/Roll [-] 1
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Literature review Figure 2.62. Mult
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Materials and Methods 3.1. Methodol
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Materials and Methods For the sake
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Materials and Methods 9 th QUESTION
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Materials and Methods 3.3. New anal
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Materials and Methods 3.3.3. Free-b
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Materials and Methods Figure 3.6. F
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Materials and Methods By the introd
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Materials and Methods 3.4. Experime
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Materials and Methods Figure 3.7. C
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Materials and Methods All of the pa
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Materials and Methods 3.4.5. Measur
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x c Materials and Methods ∑ Fi
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Materials and Methods Probability D
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Materials and Methods Figure 3.18.
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Materials and Methods By doing so,
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3.4.7.2. Steps of the approach Mate
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Materials and Methods All the funct
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Materials and Methods β [º] 40 20
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Materials and Methods If the center
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Materials and Methods By the use of
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Materials and Methods Thus, one pri
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Materials and Methods I. The patter
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3.6.3. Geometrical models Materials
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Materials and Methods − − −
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3.6.4.3. Contact [MSC.ADAMS] Materi
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Materials and Methods Besides the k
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Materials and Methods By multiplyin
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Results 4. RESULTS 4.1. Results reg
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Results This closely equal percenta
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Results Fpf/BW [-] 8 Fekete et al.
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Results In reality, human subjects
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Results 4.2. Results regarding the
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Results 0.8 Χ [-] 1 Sliding-rollin
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Results Χ [-] 1 Sliding-rolling ra
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Results Among the tested prostheses
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Results χ [-] 1 Averaged sliding-r
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Results Χ [-] 1 Sliding-rolling ra
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4.3. New scientific results Results
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Results 3 rd Thesis: Based on the m
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Conclusions and Suggestions 5. CONC
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Conclusions and Suggestions Suggest
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Summary 6. SUMMARY In this doctoral
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Appendix APPENDIX A1. Bibliography
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Appendix [31] Csizmadia B. M., Nán
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Appendix [61] Gill H. S., O’Conno
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Appendix [93] Klebanov B. M., Barla
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Appendix [123] Nägerl H., Frosch K
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Appendix [154] Reuben J. D., McDona
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Appendix [187] Wahrenberg H., Lindb
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Appendix 6. Fekete G., Kátai L.: M
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Appendix Figure 3. Setting Stitchin
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Appendix Fpf/Fq [-] 1.2 h = 6 mm h
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Appendix η1 angle [˚] 6 Hirokawa
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Appendix Figure 13. Mechanical mode
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Appendix Ψ angle [˚] 10 Van Eijde
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Appendix Figure 19. Mechanical mode
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Appendix - 177 -
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PhD Fekete - SZIE version - 2.2 - Szent István Egyetem

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