Abstract
Based on the traditional piezoelectric effect theory, the process of multi-piezoelectric effects generation is analyzed and the theory of the secondary and tertiary piezoelectric effect is deduced by four kinds of piezoelectric equations. Experimental research is performed through the PZT-5 piezoelectric ceramics stack, the existence of multi-piezoelectric effects is verified and experimental data is obtained under certain boundary conditions. The experimental data results show that if an external force which is applied to the positive piezoelectric effect is 400, the displacement generated by the secondary converse piezoelectric effect is 0.16. Therefore, starting from the first positive piezoelectric effect of the piezoelectric ceramics under applied force, the displacement generated by the secondary converse piezoelectric effect and the voltage generated by the tertiary positive piezoelectric effect are all linear with the applied force.
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