The linear piezoelectric and nonlinear hysteresis behaviors of ferroelectrics are well-known have been extensively studied. However, less attention has paid to the variations their mechanical properties under electric loading. In this work, using tube cylinder specimens, three independent elastic coefficients related internal frictions PZT-5H ferroelectric ceramics measured our proposed modifie...

In this paper we study the global (in time) existence of small data Sobolev solutions and blow-up to Cauchy problem for semilinear evolution models with scale-invariant friction, visco-elastic damping power nonlinearity. We are interested in critical exponents question how higher regularity influences admissible range $ p nonlinearity get solutions.

In an investigation of phonation onset, a linear stability analysis was performed on a two-dimensional, aeroelastic, continuum model of phonation. The model consisted of a vocal fold-shaped constriction situated in a rigid pipe coupled to a potential flow which separated at the superior edge of the vocal fold. The vocal fold constriction was modeled as a plane-strain linear elastic layer. The d...

The Viscous Beam is a wearable tremor-suppression orthosis that applies viscous resistance to motion of the wrist in flexion and extension. The orthosis reduces tremor amplitude and is small enough to be worn under the sleeve of a shirt. Hand and forearm cuffs couple the damper to the user. The cuffs permit full thumb and finger motion, wrist flexion and extension, and forearm pronation and sup...

Abstract In this paper we study the global (in time) existence of small data Sobolev solutions to Cauchy problem for semilinear $$\sigma $$ σ -evolution models with friction and visco-elastic damping a power nonlinearity, namely, $$\begin{aligned} \left\{ \begin{array}{ll} u_{tt}+ (-\Delta )^\sigma u + u_t +(...