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| 人密质骨的撞击实验研究 | |
| 引用本文： | 赵均海,孙家驹,毛晓岗,耿介,J.L.Katz.人密质骨的撞击实验研究[J].中国生物医学工程学报,2001,20(2):170-174,169. |
| 作者姓名： | 赵均海 孙家驹 毛晓岗 耿介 J.L.Katz |
| 作者单位： | 1. 西北建筑科技大学土木工程学院, 2. 长安大学基础科学系, 3. 西安医科大学一附院骨科, 4. 美国西方储备大学工学院, |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 本文用分离式Hopkinson杆（SHBM）（应变率为7001/s)对人的密度骨进行撞击实验研究，得出了应力-时间、应变-时间、应变率-时间及应力-应变等曲线。用一维波传播理论分析实验数据。结果表明即使在高应变率下，人的密质骨也具有非线性粘弹性材料的特性，据此可得人密质骨的冲击特性可用三参数粘弹性力学模型描述，同时得出了高应变率下，人的密质骨也具有非线性粘弹性材料的特性。据此可得人密质骨的冲击特性可用三参数粘弹性力学模型描述，同时得出院高应变率下人密度骨的极限应力和残余应变值。 |
| 关 键 词： | 分离式Hopkinson杆 密质骨 高应变详细 粘弹性力学模型 |
DYNAMIC RESPONSE OF HUMAN CORTICAL BONE AT HIGH STRAIN RATE BY SPLIT HOPKINSON BAR METHOD |
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| Zhao Junhai,Sun Jiaju,Mao Xiaogang,GENG Jie,J.L.Katz.DYNAMIC RESPONSE OF HUMAN CORTICAL BONE AT HIGH STRAIN RATE BY SPLIT HOPKINSON BAR METHOD[J].Chinese Journal of Biomedical Engineering,2001,20(2):170-174,169. | |
| Authors: | Zhao Junhai Sun Jiaju Mao Xiaogang GENG Jie JLKatz |
| Abstract: | Dynamic response of human cortical bone was studied using split Hopkinson bar method(SHBM) at high mechanical strain rate(700 1/s). Curves of stress vs. Time, strain vs. Time, strain rate vs. Time and stress vs. Strain were all recorded, One dimensional wave propagation theory was used to analyze the data. The results showed that human cortical bone behaved as a non linear viscoelastic material even at high strain rate. This suggests refinement of both the constitutive relationship and the fracture criterion for human cortical bone. Scanning electron microscopy(SEM) was used to study the fracture surfaces for correlation with the dynamic data. |
| Keywords: | Split hopkinson bar method Human cortical bone High strain rates Viscoelastic mechanical mode |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |