3-3 型压电复合材料的有限元模型及材料参数对其性能的影响

基金项目: 国家自然科学基金资助项目(50135030; 90205030)

详细信息

FINITE ELEMENT MODEL AND EFFECT OF MATERIAL PARAMETERSON PROPERTIES OF 3-3 PIEZOCOMPOSITES

School of Civil Engineering and Mechanics, Xi’an Jiaotong University, Xi’an 710049, China

摘要

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。
- 3-3 压电复合材料 /
- 均匀场理论 /
- 有限元方法 /
- 代表体积元
Abstract: 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 result s of the model are in agreement with the previous experimental work. In cont rast to the analytical model , the finite element model gives more accurate result s. The effect of material parameters , such as polymer volume f raction , Poisson ratio , Young’s modulus and mat rix geomet ry , on the hydrostatic properties was analyzed based on the model.
- 3-3 piezocomposites /
- homogenization /
- finite element method /
- representative volume element