论文部分内容阅读
通过MATLAB软件对陶瓷颗粒均匀分布的0-3型压电陶瓷/聚合物复合材料进行了建模,通过有限元分析软件ANSYS,研究了压电复合材料受力时内部应力分布及电荷分布状态,同时研究了压电陶瓷颗粒体积分数及静态载荷变化时,压电陶瓷/聚合物复合材料中压电陶瓷产生的最大节点电压的变化情况。研究表明:压电陶瓷/聚合物复合材料在受力时,压电相受到的应力远远大于聚合物相,压电相棱角处受到的应力最大,产生的电荷最多。随着压电陶瓷体积分数变化,压电复合材料中压电陶瓷产生的最大节点电压也增加,当压电陶瓷体积分数达到30%时,产生的最大节点电压达到2.86×10-5 V。随着静态载荷的增加,压电复合材料产生的最大节点电压呈线性增加,阻尼效果越明显,与文献中的实验结果吻合。
The 0-3 piezoelectric ceramic / polymer composite with uniform distribution of ceramic particles was modeled by MATLAB software. The internal stress distribution and charge distribution of the piezoelectric composite were studied by finite element analysis software ANSYS. At the same time, the changes of the maximum node voltage of piezoelectric ceramics in piezoelectric ceramic / polymer composites were investigated when the volume fraction of piezoelectric ceramic particles and the static load changes. The results show that when the piezoelectric ceramic / polymer composite is subjected to stress, the stress on the piezoelectric phase is far greater than that on the polymer phase, and the stress on the corners of the piezoelectric phase is the largest, resulting in the most charge. With the change of volume fraction of piezoelectric ceramic, the maximum node voltage of piezoelectric ceramic in piezoelectric composite also increases. When the volume fraction of piezoelectric ceramic reaches 30%, the maximum node voltage reaches 2.86 × 10-5V. With the increase of static load, the maximum node voltage of piezoelectric composite increases linearly, and the damping effect is more obvious, which agrees well with the experimental results in literature.