摘要
研究了正常国人急性外伤致死的成人新鲜尸体肩髋膝关节软骨的力学性质。以一维拉伸的方法得出了肩髋膝关节软骨的破坏载荷、伸长比、Lagrange应力、Cauchy应变等。用最小二乘法对拉伸实验数据进行拟合,得出了肩髋膝关节的应力-应变关系表达式和应力-应变曲线;对肩髋膝关节软骨进行一维拉伸应力松弛实验,得出了应力松弛以及归一化后应力松弛函数数据和曲线,应用最小二乘法得出了肩髋膝关节的G (t)。并对实验结果进行分析讨论。
The biomechanical natures of the cartilage of shoulder joint, hip joint knee joint were researched which got from fresh bodies caused by impetuous trauma on the head. Did the pulling test in one dimension then obtained the tensile destructive load,stretch ratio,Lagrange stress,Cauchy strain of the above three kinds of cartilage. With the least square method we fit the data of stress and strain and then got the stress-strain formula and curves of the three groups. We also did the stress relaxation test on them and obtained the reduced stress relaxation data and curves.Finally with the least square method we obtained the G(t) and discussed the experimental results then obtained some conclusion.
出处
《北京生物医学工程》
2005年第3期171-175,共5页
Beijing Biomedical Engineering
