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An Investigation on Neck Injury Due to Head Impact in Road Accidents Considering Hyperviscoelastic Properties of Soft Tissues

Kamali Fard, Reza | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48578 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Ahmadian, Mohammad Taghi
  7. Abstract:
  8. Neck fracture caused by impacts on the head and neck during road accidents annually imposes a great cost to the people hospitals and the economy of country. Most of these accidents, regardless of cartilaginous injury causes sudden pressure to the spinal cord so it seems necessary to understand the biomechanical response of the neck and the mechanism of injury to reduce costs. Many computational models related to the neck injury have been developed recently. The aim of this project is to investigate the effect of frontal and rear impacts to the head and neck during road accidents. There are many researches have used elastic property for tissues but a little portion of research in this field have used viscoelasticity or hyper-elasticity to define tissue properties so that hyper-viscoelastic material have been used in this project have been extracted from the literature. The connection between neck and head has been assumed to have limited movement and the skull has been modeled as a rigid body. Finite element model has been validated against rear and frontal impact. The model had a good agreement with experimental data in both scenarios. The spinal cord has been modeled and mounted between cervical spine. Finally strain distribution of spinal cord was reported during rear and frontal impacts
  9. Keywords:
  10. Biomechanics ; Impact ; Spine ; Intervertebral Disc ; Road Accidents ; Cervical Vertebra ; Spinal Cord Injury

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