Oyen Michelle L
Department of Biophysical Sciences and Medical Physics, University of Minnesota, Minneapolis, MN 55455, USA.
J Biomech. 2006;39(14):2699-702. doi: 10.1016/j.jbiomech.2005.09.011. Epub 2005 Oct 25.
A series elastic and plastic deformation model [Sakai, M., 1999. The Meyer hardness: a measure for plasticity? Journal of Materials Research 14(9), 3630-3639] is used to deconvolute the resistance to plastic deformation from the plane strain modulus and contact hardness parameters obtained in a nanoindentation test. Different functional dependencies of contact hardness on the plane strain modulus are examined. Plastic deformation resistance values are computed from the modulus and contact hardness for engineering materials and mineralized tissues. Elastic modulus and plastic deformation resistance parameters are used to calculate elastic and plastic deformation components, and to examine the partitioning of indentation deformation between elastic and plastic. Both the numerical values of plastic deformation resistance and the direct computation of deformation partitioning reveal the intermediate mechanical responses of mineralized composites when compared with homogeneous engineering materials.
采用一种系列弹塑性变形模型[Sakai, M., 1999年。迈耶硬度：塑性的一种度量？《材料研究杂志》14(9)，3630 - 3639]，从纳米压痕试验中获得的平面应变模量和接触硬度参数来反卷积塑性变形阻力。研究了接触硬度与平面应变模量的不同函数依赖关系。计算了工程材料和矿化组织的塑性变形阻力值，该值由模量和接触硬度得出。弹性模量和塑性变形阻力参数用于计算弹性和塑性变形分量，并研究压痕变形在弹性和塑性之间的分配。与均质工程材料相比，塑性变形阻力的数值以及变形分配的直接计算都揭示了矿化复合材料的中间力学响应。
