压入实验中考虑曲率时弹性模量的确定方法

来源 :首都医科大学生物医学工程学科学术年会 | 被引量 : 0次 | 上传用户：kok671113

【摘要】

：

目的：针对平压头压入曲面材料的问题,提出了考虑曲面曲率时弹性模量的确定方法.方法：利用有限元方法研究曲率对压入响应的影响,然后利用量纲分析与有限元方法,给出压入载荷的无量纲表达式,最后提出考虑被压材料为曲面时弹性模量的确定方法.结果：由数值算例验证本方法能得到曲面材料的弹性模量,并具有较高的精度.结论：研究发现,对于角膜、巩膜等生物软组织材料,用压入法确定材料的力学特性时,材料表面曲率的影响不可忽

【作者】

：

钱秀清张昆亚张海霞刘志成

【机构】

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首都医科大学生物医学工程学院北京 100069

【出处】

：

首都医科大学生物医学工程学科学术年会

【发表日期】

：

2012年4期

【关键词】

：

生物软组织材料弹性模量微纳米压痕法有限元方法量纲分析

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压入实验中考虑曲率时弹性模量的确定方法

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