Analysis method of multi-hole piezoelectric material electro-elastic field
A piezoelectric material and electric material technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of unguaranteed accuracy, consuming a lot of manpower and calculation time, consuming large computer time and manpower, etc. , to achieve flexible adaptation, enhance engineering practicability, and reduce the amount of calculation
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Embodiment 1
[0038] This embodiment is a PZT-4 piezoelectric material containing a triangular hole and a square hole (such as figure 2 and image 3 shown), subject to x 2 Uniform electrical load in the direction The medium in the two holes is air. Material constants of PZT-4 (including elastic matrix A, piezoelectric matrix B and dielectric matrix C) and air permittivity ε 0 as follows:
[0039] A 11 =8.205×10 -12 ,A 12 =-3.144×10 -12 ,A 22 =7.495×10 -12 ,
[0040] A 33 =19.3×10 -12 (Pa -1 );
[0041] B 13 =39.4×10 -3 ,B 21 =-16.62×10 -3 ,B 22 =23.96×10 -3 (m 2 / C); (1)
[0042] C 11 =7.66×10 7 ,C 22 =9.82×10 7 (mF);
[0043] ε 0 =8.85×10 -12 F / m.
[0044] Step 1: Calculate the corresponding conformal mapping function according to the Schwarz-Christoffel mapping and using Maple software as
[0045]
[0046] Step 2: based on the electroelastic constant of the given piezoelectric material and the dielectric constant (see formula (1)) of the medium in the h...
Embodiment 2
[0082] Present embodiment is the PZT-4 piezoelectric material that contains an oval hole and an ellipse hole (such as Figure 4 and Figure 5 shown), subject to x 2 Uniform electrical load in the direction The medium in the two holes is air. The conformal mapping function of these two holes is
[0083]
[0084] The specific solution process is similar to that of Embodiment 1. First, the electroelastic constant of the piezoelectric material is obtained, and the complex potential function of the piezoelectric material and the perturbation series expression of the potential function of the medium in the two holes are established, and then the boundary conditions are established. Then carry out the Fourier series expansion of the boundary conditions, obtain the equations about the undetermined complex coefficients in the perturbation series expression, and solve all the undetermined coefficients, so as to determine the complex potential function of the piezoelectric materia...
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