关节软骨的压痕:试样半径对确定性能的影响

C. Spoon, J. Wayne
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引用次数: 0

摘要

压痕测试是一种常用的实验装置,用于确定关节软骨的特性,无论是在实验室还是作为临床工具,因为它是一种可以在原位进行的测试。因此,修复研究中产生的正常软骨和组织的行为已经得到[1,2,3]。一项有限元研究[4]表明,软骨在压痕应力松弛中的行为会受到相对于压痕半径的组织宽度的影响。另一项骨软骨缺陷压痕的有限元研究表明,该比值也会影响边界条件的规格[5]。本研究旨在评估改变几何参数(如组织宽度和压头半径)对蠕变压痕实验确定的性能的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Indentation of Articular Cartilage: Effects of Specimen Radius on Determined Properties
The indentation test is a commonly used experimental setup to determine properties of articular cartilage, both in the laboratory and as a clinical tool, as it is a test that can be performed in situ. Behavior of normal cartilage and tissue generated in reparative studies have been thus obtained [1, 2, 3]. It has been shown from a finite element study [4] that the behavior of cartilage in indentation stress relaxation can be affected by the tissue width relative to the radius of the indenter. Another finite element study of the indentation of osteochondral defects showed that this ratio also affected specifications of boundary conditions [5]. This investigation sought to evaluate the effect of changing geometric parameters (e.g. tissue width and indenter radius) on the properties determined from creep indentation experiments.
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