Abstract

A technique for determining the mechanical characteristics of nanoobjects is presented. A heterogeneous material consisting of a nanophase and a binder phase with specific mass and volume concentrations is considered. A heterogeneous material is reduced to homogeneous by the averaging methods, and the mechanical characteristics are associated with the averaged characteristics. Assuming that the mechanical characteristics of the binder and averaged homogeneous materials are known from experimental data, the system of equations is obtained that allows us to determine the mechanical characteristics of nanoobjects included in this heterogeneous material. Classical experiments were carried out describing the uniaxial stress and strain state of materials to establish the analytical dependences of the mechanical characteristics of nanophases on their size. Specific examples are given for silicon dioxide nanoparticles (Aerosil and Tarkosil powders).

中文翻译：

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确定纳米材料弹性特性的理论和实验方法

摘要

提出了确定纳米物体力学特性的技术。考虑了由具有特定质量和体积浓度的纳米相和粘合剂相组成的异质材料。通过平均方法将异质材料还原为均质材料，并且将机械特性与平均特性相关联。假设从实验数据中知道了粘合剂和均质材料的机械特性，便获得了方程系统，该方程组使我们能够确定包含在这种异质材料中的纳米物体的机械特性。进行了经典的实验来描述材料的单轴应力和应变状态，以建立纳米相的机械特性对其尺寸的解析依赖性。给出了二氧化硅纳米颗粒（Aerosil和Tarkosil粉）的具体实例。