Flexural vibration of a pyrocomposite hollow cylinder (Q718966)

Pyroelectric materials are used in many applications in electronics and optics, e.g., in information storage devises, hydrophones, thermalimaging instruments, security systems and ultrasonic transducers. Here, the authors study flexural vibrations of infinite pirocomposite circular hollow cylinder composed of inner and outer pyroelectric layers bonded together by linear elastic material with voids. The authors use the Mindlin equations of motion for pyroelectric crystal and consider in polar coordinates the material with hexagonal symmetry. The imaginary parts of complex frequencies are shown to be responsible for damping effect.