Professor Stanislaw Migorski Was Invited to Give an Academic Lecture

Title: "A mathematical model for piezoelectric materials in contact mechanics"

At 4:00 p.m. on June 8th, our hospital organized a special report titled "Nonlinear Schrodinger Equation with PT-Symmmetric delta-function". The keynote speaker was Professor Stanislaw Migorski, a renowned academic. All the graduate students of mathematics major attended the lecture.

This presentation discusses a mathematical model of a problem in contact mechanics of piezoelectric materials. Piezoelectric materials (such as quartz and some crystals) can generate voltages under applied mechanical stress (direct effect) and can undergo small shape changes under applied voltage (inverse effect). Professor Stanislaw Migorski described a physical background, motivation and application. He studied the static frictional contact between a piezoelectric body and a foundation and derived classical and weak formulations for the contact problem. He proved the existence of weak solutions of displacement and electric potential for a system coupled with two semi-variational inequalities, and pointed the way for further research. The one-hour presentation by Stanislaw Migorski was a great success with a down-to-earth presentation and plenty of examples.

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