罗卓荆,沈根标,阮狄克,崔海相,张西正,邹长春.胸腰椎骨折三点加压固定中哈灵顿棒危险断面及其载荷影响的研究[J].中国脊柱脊髓杂志,1993,(1):.
胸腰椎骨折三点加压固定中哈灵顿棒危险断面及其载荷影响的研究
Studies of stress riser of Harrington rod in the treatment of thoracolumbar spinal fractures
  
DOI:
中文关键词:  哈灵顿棒,危险断面,生物力学,光弹性实验,胸腰椎骨折
英文关键词:Harrington rod,Stress riser,Biomechanics,Photoelastics,Thoracolumbar fracture
基金项目:
罗卓荆  沈根标  阮狄克  崔海相  张西正  邹长春
第四军医大学唐都医院骨科 710038陕西省西安市 (罗卓荆,沈根标,阮狄克,崔海相)
,西安矿业学院材料力学教研室 710056陕西省西安市 (张西正)
,西安矿业学院材料力学教研室 710056陕西省西安市(邹长春)
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中文摘要:
  本文采用二维光弹模型研究哈灵顿分离棒(HDR)的应力分布。实验载荷包括作用于两端钩部的垂直力及作用于棒中点的水平力。实验发现棒棘齿区应力高于光滑区,HDR光滑区—棘齿区交界处应力居棒同侧最高,是棒强度的危险断面,其应力值与载荷呈正直线相关.本文亦初步讨论了减少危险断面应力、避免HDR疲劳断裂的途径。
英文摘要:
  The stress distribition of Harrington distraction rod (HDR) was studied by 2-D photoelastics. The loads included horizontal forces on the middle of the rod and vertical forces on the two ending hooks. The experimental results showed that the stresses on r
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