Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (3): 410-414.DOI: 10.12068/j.issn.1005-3026.2015.03.024

• Mechanical Engineering • Previous Articles     Next Articles

Analysis on Mechanical Properties of Human Intervertebral Disc Under Random Vibration

GUO Li-xin1, LI Rui1,2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. College of Electromechanical & Information Engineering, Dalian Nationalities University, Dalian 116600, China.
  • Received:2014-01-13 Revised:2014-01-13 Online:2015-03-15 Published:2014-11-07
  • Contact: GUO Li-xin
  • About author:-
  • Supported by:
    -

Abstract: A kind of 3D finite element model of L4-L5 segment intervertebral discs was developed. The relationship of compressive stress and shear stress with various body weight, body height and posture in driving cars was studied. The transfer function between the spine stress and the random vibration of the seat was researched. The results show that the maximum value of compressive stress and shear stress of the lumbar occurs during bending posture. The body height and weight influence the static shear stress and compression stress of the lumbar. The sitting posture of the driver influences the transfer function between the stress of spine and vibration acceleration. The stress of driving posture is smaller than bending posture regardless of the size of the human body, which indicates driving posture more comfortable.

Key words: human intervertebral disc, sitting posture, random vibration, compressive stress, shear stress, transfer function

CLC Number: