| 猪眼角膜的生物力学特性 |
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| 引用本文： | 曾衍钧,任庆华,蔡琦瑛,李秀云,胡泳霞,宋海兰.猪眼角膜的生物力学特性[J].生物物理学报,1993,9(2):323-327. |
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| 作者姓名： | 曾衍钧 任庆华 蔡琦瑛 李秀云 胡泳霞 宋海兰 |
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| 作者单位： | 北京工业大学生物力学研究室，北京工业大学生物力学研究室，北京工业大学生物力学研究室，北京友谊医院眼科，北京友谊医院眼科，北京友谊医院眼科 100022，100022，100022 |
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| 摘 要： | 对猪眼角膜进行了有系统的单轴拉伸实验,通过实验来确定其极限强度,断裂能、显著非线性的应力-应变关系和滞后环.在不同的应变水平下进行了应为松弛实验并确定了连续松弛谱的各参数.从极限强度、断裂能和应力松弛来看,角膜的纵向和横向之间无重大的差异,据此,各向同性假定可用于初步的角膜力学模型.
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| 关 键 词： | 角膜 生物 应力松弛 生物力学 |
BIOMECHANICAL PROPERTIES OF PIG CORNEA |
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| Zeng Yanjun Ren Qinghua Cai Qiying.BIOMECHANICAL PROPERTIES OF PIG CORNEA[J].Acta Biophysica Sinica,1993,9(2):323-327. |
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| Authors: | Zeng Yanjun Ren Qinghua Cai Qiying |
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| Institution: | Zeng Yanjun Ren Qinghua Cai Qiying (Beijing Polytechnic University)Li Xiuyun Hu Yongxia Song Hailan (Beijing Friendship Hospital) |
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| Abstract: | Specimens of pig corneas were systematically tested in uniaxial tension experiment to determine their ultimate strength, breaking energy, effective nonlinear stress-strain relations, and hysteresis. The relaxation tests were performed at different strain levels and the parameters of relaxation spectrum were determined. From the results of ultimate stress, breaking energy and relaxation, there were no significant differences between transverse and longitudinal direction. It snggests that the isotropy assumption could be used for preliminary mechanical model of cornea. |
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| Keywords: | Cornea Biomechanical properties Relaxation |
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