燕山大学学报2012，Vol.36Issue(3)：219-223,274,6.DOI:10.3969/j.issn.1007-791X.2012.03.007
基于区域叠合有限元技术预测三维编织复合材料弹性性能
Prediction of elastic properties of 3D braided composite using domain superposition technique
摘要
Abstract
A domain superposition technique (DST) is implemented for prediction of the elastic properties of three-dimensional four-directional braided composites in this paper. Using the DST model, the reinforcement domain and the global domain which are mutual independently are built respectively into FE meshes instead of explicitly modeling the reinforcement domain and the matrix domain formed using the traditional finite element method (FEM). During solving, the reinforcement FE meshes are coupled into the global FE mesh using nodal degree of freedom coupling technique. Accordingly the material models are adjusted to ensure that the DST implementation is an accurate representation of the actual composites system. The establishing model process of FE meshes for DST are much easier than that of traditional FEM. Numerical results show that the DST results are correlation and coincident with that of traditional FE analysis. The results in this paper is a basis for further development of efficient numerical models and for prediction of the nonlinear macroscopic mechanical properties and simulation of the progressive damage process of the braided composites.关键词
区域叠合有限元技术/三维编织复合材料/单胞模型/有限元分析/弹性性能预测Key words
domain superposition technique/ 3D braided composite/ unit cell model/ finite element analysis/ elastic property prediction分类
通用工业技术引用本文复制引用
张芳芳,姜文光,于春蕾,刘才..基于区域叠合有限元技术预测三维编织复合材料弹性性能[J].燕山大学学报,2012,36(3):219-223,274,6.基金项目
河北省自然科学基金资助项目(E2010001225) （E2010001225）
河北省回国留学人员基金(20100707) （20100707）
