基于整体膨隆实验的虹膜弹性模量求解方法  

Measuring iris elastic modulus based on holistic iris deformation experiment

作　　者：杨进[1] 薄雪峰[1] 钱秀清[1] 王倩[1] 王建霞[1] 卢金秋[1] 全海英[1] 刘志成[1] 

机构地区：[1]首都医科大学生物医学工程学院,北京100069

出　　处：《医用生物力学》2010年第3期182-185,共4页Journal of Medical Biomechanics

基　　金：国家自然科学基金资助项目(30600150;10802053;30670514);教育部科学技术研究重点项目(207001);北京市教育委员会科技发展计划项目(KZ200710011010;KM200710025009);北京市属市管高等学校人才强教计划资助项目;北京市科技新星培养计划(2007A076)

摘　　要：目的求解虹膜材料的弹性模量。方法采用自行研制的实验装置,对完整的离体兔眼虹膜试件进行0Pa到600Pa的压力加载,获取虹膜加压膨隆的数据,计算虹膜膨隆高度。然后以实测数据为基础,利用ANSYS12.0进行虹膜有限元分析,反推计算虹膜线弹性区间的弹性模量。结果虹膜在载荷为100Pa时的弹性模量为6.1kPa。结论虹膜在前后房压强差较小的情况下可以简化为线弹性材料。Objective To measure the iris elastic modulus.Method Using the self-designed device,the information of in vitro holistic iris deformation of rabbits were obtained with the load-pressure increasing gradually from 0 Pa to 600 Pa,and the heights of such iris were computed.The corresponding model based on experimental data was established and analyzed by ANSYS finite element software,and the iris elastic modulus was computed by a reverse method.Results The elastic modulus is 6.1 kPa at 100 Pa load pressure.Conclusions The iris material can be considered as linear elastic model when the pressure difference between the anterior chamber and posterior chamber is low.

关 键 词：有限元 压强 虹膜 弹性模量 线弹性 

分 类 号：R318[医药卫生—生物医学工程]