Dissertation > Excellent graduate degree dissertation topics show

Mechanics Performance Testing and Functional Analysis for Modified Halo Pelvic Distraction Fixture

Author: WangDong
Tutor: SongXiZheng
School: Nanhua University
Course: Surgery
Keywords: modified Halo pelvic distraction fixture elastic traction mechanics Performance Testing
CLC: R687.3
Type: Master's thesis
Year: 2010
Downloads: 12
Quote: 0
Read: Download Dissertation

Abstract


Purpose:To analysis the structural characteristics of modified Halo pelvic distraction fixture, and test it’s mechanical properties. To clarify it’s working principle, make certain influence factors of it’s traction, and delve the relationship between traction and displacement.Method:To simulate running conditions of modified Halo pelvic distraction fixture, divide it into three parts, test mechanical properties of them.The first,to measure loaded and unloaded displacement of Longitudinal strut bar’s inter-fixed points.The second,to measure loaded and unloaded displacement of connection device’s inter-fixed points.The third,to measure loaded and unloaded displacement of head ring’s inter-fixed points.Finally, to draw load-displacement curve , summed up the principle and analysis mechanical properties by the theory of Engineering Mechanics and Mechanics Of Materials.Results:1.Progressive loading under 0 ~ 20kg load: Longitudinal strut bar’s diameter group. D= 8mm group did not measure loaded and unloaded displacement inter-fixed points;D=5mm group measured loaded displacement 1.9mm and unloaded displacement 0.2mm inter-fixed points when loaded to 14kg;D=6mm group measured loaded displacement 1.7mm and unloaded displacement 0mm inter-fixed points when loaded to 20kg.It is linear between load and displacement.2.Progressive loading under 0 ~ 20kg load: Longitudinal strut bar’s distance group. H=45mm group measured loaded displacement 0~0.5mm and unloaded displacement 0mm inter-fixed points;H=50mm group measured loaded displacement 0~0.9mm and unloaded displacement 0mm inter-fixed points;H=55mm group measured loaded displacement 0~1.7mm and unloaded displacement 0mm inter-fixed points. It is linear between load and displacement.3.Progressive loading under 0 ~ 20kg load: Longitudinal strut bar inter-fixed points’ distance group.L=500mm group measured loaded displacement 0~1.7mm and unloaded displacement 0mm inter-fixed points;L=550mm group measured loaded displacement 0~1.7mm and unloaded displacement 0mm inter-fixed points;L=600mm group measured loaded displacement 0~1.8mm and unloaded displacement 0mm inter-fixed points;L=650mm group measured loaded displacement 0~2.0mm and unloaded displacement 0mm inter-fixed points;L=700mm group measured loaded displacement 2.7mm and unloaded displacement 0.2mm inter-fixed points when loaded to 20kg;L=750mm group measured loaded displacement 2.8mm and unloaded displacement 0.3mm inter-fixed points when loaded to 18kg;L=800mm group measured loaded displacement 3.0mm and unloaded displacement 0.3mm inter-fixed points when loaded to 16kg. It is linear between load and displacement.4.Progressive loading under 0 ~ 20kg load:Longitudinal strut bar’s levers-type group.h’group measured loaded displacement 1.0mm and unloaded displacement 0.2mm inter-fixed points when loaded to 4kg;h group measured loaded displacement 2.2mm and unloaded displacement 0.3mm inter-fixed points when loaded to 8kg;H group measured loaded displacement 3.0mm and unloaded displacement 0.3mm inter-fixed points when loaded to 16kg.It is linear between load and displacement.5.Progressive loading under 0~200N load:connection device group measured loaded displacement 0~0.417mm and did not measure unloaded displacement inter-fixed points.It is linear between load and displacement.6.Progressive loading under 0~200N load: head ring group measured loaded displacement 0~0.433mm and did not measure unloaded displacement inter-fixed points. It is linear between load and displacement.Conclusion: When longitudinal strut bar’s elastic modulus, diameter, offset distance, the distance between locking points and levers-type are definited,there is a linear relationshiip between load and displacement in modified Halo pelvic distraction

Related Dissertations

  1. The Effects of Continuous Elastic Outside Distraction on the Nipple and Its Supporting Tissues in Minipig,R655.8
  2. A Quantitative Study of Grafts Angiogenesis after Anterior Cruciate Ligamen Reconstruction with Preservation of the Remnant in Rabbit Model,R687.2
  3. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  4. Chinese Young Men Waist-dimensional CT 4,5 Vertebral Pedicle Morphology and Clinical Significance of the Difference,R687.3
  5. Treatment of Device-Related Infection in Rabitts by High Requency Electric,R687.3
  6. The Analysis and Comparison of Adjacent Segment Degeneration of the Finite Element Caused by Three Posterior Lumbar Fusion Style,R687.3
  7. Preliminary Study the Supporting Role of Reconstruction Interlocking Nail in Comminuted Fracture of Tibia Fracture Fragments and Fibula Fixtion,R687.3
  8. Comparative Efficacy with Locking Plate and the Normal Plate for Treatment of Elderly Tibial Plateau Fractures in Schatzker Ⅱ, Ⅲ Type,R687.3
  9. The Curative Effect Contrast between the Percutaneous Hollow Compression Screw Internal Fixation and the Prosthetic Replacement for Joint in the Senile Osteoporosis Femoral Neck Fracture,R687.3
  10. The Establishment and Preliminary Application of the Three-dimensional Finite Element Model of Ankle Joint,R687.3
  11. The Biomechanics and Imageology Preliminary Studies of Lumbar Intertransverse Absorbable Fusion Cage in the Process of Biodegradation,R687.3
  12. The Comparison Study Between the stoppa Approach and the Ilioinguinal Approach in the Application of Anterior Pelvis Ring Fracture,R687.3
  13. Preliminary Effects of Clavicular Hook Plate Technique on Treating Acromioclavicular Joint Dislocation,R687.3
  14. Comparison between Two Method for Femoral Neck Fractures in Elderly,R687.3
  15. Applied Anatomic Study of the Parameters of Screw Fixation for the Sacroiliac Joint,R687.3
  16. Open Reduction and Internal Fixation of Displaced Scaphoid Fractures,R687.3
  17. An Experimental Study of Autologous Bone Marrow Mesenchymal Stem Cells in Articular Cartilage Extracellular Matrix to Repair Full-thickness Defects of Femoral Weight-bearing Articular Cartilage in the Goat,R687.4
  18. The Early-stage Clinical Research of Preservation of the Femoral Neck in Total Hip Arthroplasty,R687.4
  19. Posterolateral fusion and posterior interbody fusion for the treatment of low isthmic spondylolisthesis comparative study,R687.3
  20. Thoracolumbar fractures compared two different grafting methods,R687.3
  21. Characteristics of Vertebral Endplate Signal (Modic) Changes in Cervical Spine and Its Relation with Cervical Degeneration,R687.3
  22. Pilot Study of Pourable Dynamic Hip Screw for the Treatment of Osteoporotic Intertrochanteric Fracture,R687.3

CLC: > Medicine, health > Surgery > Orthopaedic Surgery ( movement system diseases,orthopedic surgery ) > Orthopedic surgery and surgery > Bone surgery
© 2012 www.DissertationTopic.Net  Mobile