this paper presents a nonlinear model of a clamped-clamped microbeam actuated by an electrostatic load with stretching and thermoelastic effects. the frequency of free vibration is calculated by discretization based on the differential quadrature (dq) method. by separating the real and imaginary parts of frequency, the quality factor of thermoelastic damping is calculated. both the stretching a...

The two main objectives of this work is 1) to develop a mathematical model to efficiently capture the fracture behavior of materials undergoing thermal shock and 2) to design and develop a mechanics based hybrid laser/waterjet manufacturing process that will be able to machine hard and brittle materials at higher speeds and with better cut quality. The mathematical model relates the temperature...

The present article investigates the elasto-thermodiffusive interactions in a transversely isotropic elastic medium in the context of thermoelasticity with one relaxation time parameter and two relation time parameters. The resulting non-dimensional coupled equations are applied to a specific problem of a half-space in which the surface is free of tractions and is subjected to time-dependent th...

We determine the thermoelastic state caused by a plane axisymmetric temperature field and surface loads in multilayer hollow orthotropic cylinder with regard for dependences of physical mechanical characteristics on coordinates temperature. The thermoelasticity problem is reduced to solving systems integral-algebraic equations radial displacements. These are obtained from integral representatio...

In this paper, we focus on the first stage of transition to Rayleigh–Bénard convection in soft-jammed systems (yield stress fluids) confined a parallelepiped box heated from bottom. Up yielding, material is solid-state with constant elastic modulus. By means linear thermoelastic model, an analytical solution for stresses and strains induced by gravity temperature gradient derived. The allows us...

In order to respond to the demand of accurate miniature inertial navigation systems, ONERA has been working on the design of a vibrating beam accelerometer called the Vibrating Inertial Accelerometer (VIA). The accuracy of the VIA is directly related to the thermoelastic quality factor of its sensitive element, which is a beam made of quartz. In this work, thermopiezoelectric finite element ana...

Today, the concept of single-phase concentrated solid solutions offers an alternative strategy for increasing radiation resistance materials, namely, a multi-element composition with equiatomic or nearly concentrations. It is highly desirable to understand relationship between chemical complexity alloys and thermal effects associated irradiation in order increase such materials. We present anal...

In this paper nonclassical dynamical model for thermoelastic bodies with three phase-lags is studied. Applying variational formulation of the general three-dimensional initial-boundary value problem existence and uniqueness of solution in suitable spaces is proved. Spectral algorithm of approximation of the three-dimensional initial-boundary value problem for thermoelastic shell by a sequence o...