摘要
报道了模拟正常国人双肢站立位,骨盆在承受体重(300牛顿、600牛顿和900牛顿静载荷)时,用应变电测法得到的应力、应变分布、以及各测点的实测线应变,并计算出骨盆在不同载荷下各测点的最大最小应变值。数据通过电子计算机处理,得出主应力σ1、σ2和主应力方向角度。
To approach the biomechanical properties of pelvis in normal Chinese adult,an intact pelvis takenfrom fresh healthy male cadaver after sudden death was used in this study. The pelvis joined hp with lumber.. s andproximal segment of femurs. After appropriate management of the specimen, the loads in the simulated test (standposition of normal adult) are 300N, 600N and 900N. With strain electric measuring apparatus, the distribution ofstress and strain, and the actual linear strain of every measuring point are obtained. Data processing was performed on computer. The main stress GI, oZ and their direction angles were acquired. The results of the simulatedtest demonstrated that the stress of iliac bone adjacent to sacro--iliac articulation was maximum in all measuringpoints. The linear strain values of 0° direction parallel with coronal section were negative in majority, but those of45°and 90° direction vertical with coronal section were positive in majority. So the distribution of the linear strainof pelvis should be very complicated. When 900N weight acted on the pelvis, the maximum main stress σmax=0. 269~20. 01 MPa and the minimum main stress σmin=- 0. 095~ - 16. 56MPa. The angle of the maximum mainstress with coronal section did not exceed 4°
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
1997年第3期217-221,共5页
Journal of Biomedical Engineering