Considering that the traditional sensors can.t work well in the field with spacial
requirements, such as wind tunnel experiment, a research of small sensor to measure
multidimensional aerodynamic load is carried out. Based on anisotropic elastic theory, the
polarization field inside the square Y0-cut quartz wafer under multidimensional/six
dimensional (6-D) forces is studied. With the method of splitting electrode, the mapping
relationships between forces and the induced charges on each area are deduced. And then by
using the piezoelectric effect models of ANSYS, simulation analysis about the quartz wafer
under 6-D forces is made, obtaining the distribution of electric potential and electric field. The
results of the theoretical and simulated analysis show that it exists a quantitative and
mathematical relationship between the density of induced charges on each area and the
tangential force and torque. The other stresses can be acquired by overlaying the wafer group.
The study provides a new ideal for the production of small-size piezoelectric system to
measure multidimensional forces.
Keywords: multidimensional forces; anisotropic; piezoelectric; area; quantitative
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