摘要
根据均匀场理论分析3 3型压电复合材料代表体积胞元, 通过罚函数方法引入周期性边界条件, 建立了3 3型压电复合材料的有限元模型。数值计算结果与已有实验结果基本一致, 验证了模型的合理性, 并与解析解进行了对比, 表明该有限元模型能更精确地描述3 3型复合材料的有效性能常数。用所建模型分析了基体相体积分数、复合材料基体泊松比、弹性模量和复合材料基体分布形状等参数对静水压压电常数值和静水压灵敏值的影响。
A finite element model of 3-3 piezocomposites was established according to the homogenization method, which combined the techniques relying upon representative volume element (RVE) and periodic boundary conditions. Numerical results of the model are in agreement with the previous experimental work. In contrast to the analytical model, the finite element model gives more accurate results. The effect of material parameters, such as polymer volume fraction, Poisson ratio, Young's modulus and matrix geometry, on the hydrostatic properties was analyzed based on the model.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2005年第2期160-165,共6页
Acta Materiae Compositae Sinica
基金
国家自然科学基金资助项目 (50135030
90205030)
关键词
3-3压电复合材料
均匀场理论
有限元方法
代表体积元
Boundary conditions
Composite materials
Computer simulation
Elastic moduli
Finite element method
Poisson ratio
