• CN：11-2187/TH
• ISSN：0577-6686

›› 2012, Vol. 48 ›› Issue (8): 34-38.

• 论文 •

颗粒增强复合材料弹性结构的双尺度有限元分析

1. 郑州大学橡塑模具国家工程研究中心
• 发布日期:2012-04-20

Two Scale Analysis of Elastic Structures of Particle Reinforced Composite Materials with Finite Element Method

YANG Xiaodong;DONG Zemin;YANG Kun;SHEN Changyu

1. National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University
• Published:2012-04-20

Abstract: Particle reinforcement method is an important measure to improve the properties of materials. To predict the relationships among micro structures and mechanical properties of a composite material is a basis to realize stronger of materials. It is favorable to introduce multi-scale models in order to investigate the influence of micro structures on macro mechanical properties for better analysis, design and optimation of composite materials. Based on homogenization theory, using Voronoi cell finite element method to perform numerical simulation to particle reinforced composite materials. The macro equivalent elastic constants of a composite material can be predicted, and the micro stress fields are attained directly. In micro scale, the equilibrated stress fields are first assumed, and Voronoi stress cells are adopted to get the complimentary energy functional, so that the control equations can be established, and a set of linear algebraic equations that can be directly resolved is formed. Finally, the stress coefficients are calculated and the micro stress fields are attained. In macro scale, the macro structure analysis is done with the finite element analysis software ANSYS. The macro average value of elastic module is calculated by homogenization method, which is inputed into the ANSYS system to perform calculations. So that the two scales of macro and micro can be coupled and a mechanical analysis can be executed to the structures made of particle reinforced composite materials.