Zabulionis Darius, Rimša Vytautas
Laboratory of Experimental Mechanics, Institute of Mechanical Science, Vilnius Gediminas Technical University, Vilnius 10221, Lithuania.
Department of Aviation Technologies, Antanas Gustaitis' Aviation Institute, Vilnius Gediminas Technical University, Vilnius 10221, Lithuania.
Materials (Basel). 2018 Sep 1;11(9):1584. doi: 10.3390/ma11091584.
In the present article, a version of the lattice or spring network method is proposed to model the mechanical response of elastic particulate composites with a high volume fraction of spherical particles and with a much weaker matrix compared to the stiffness of the particles. The main subject of the article is the determination of the axial stiffnesses of the springs of the cell. A comparison of the mechanical response of a three-dimensional particulate composite cube obtained using the finite element method and the proposed methodology showed that the efficiency of the proposed methodology increases with an increasing volume fraction of the particles.
在本文中，提出了一种晶格或弹簧网络方法的版本，用于对具有高体积分数球形颗粒且与颗粒刚度相比基体刚度弱得多的弹性颗粒复合材料的力学响应进行建模。本文的主要主题是确定单元中弹簧的轴向刚度。使用有限元方法和所提出的方法获得的三维颗粒复合材料立方体力学响应的比较表明，所提出方法的效率随着颗粒体积分数的增加而提高。
