Elastic Constants and Temperature Coefficients of LiTaO3for SAW Application

Second Order Elastic Constants, Third Order Elastic Constants, Pressure Derivatives of Second Order Elastic Constants and the Low Temperature Thermal Expansion of D-tin

The complex behaviour of metals under severe thermal and stress environments is influenced markedly by their elastic properties. Indeed the response of a material tc~ an applied stress is always determined by the elastic constants and their pressure derivatives. Furthermore, both the mechanical and thermodynamic equation;$ of state of a metal that contains dislocations require detailed knowledg...

A first-principles approach to finite temperature elastic constants.

A first-principles approach to calculating the elastic stiffness coefficients at finite temperatures was proposed. It is based on the assumption that the temperature dependence of elastic stiffness coefficients mainly results from volume change as a function of temperature; it combines the first-principles calculations of elastic constants at 0 K and the first-principles phonon theory of therma...

Molecular simulation and theory of liquid crystals: chiral parameters, flexoelectric coefficients, and elastic constants{

We present an overview of the simulation methods available to calculate the phenomenological coefficients which appear in the Frank free energy of nematic liquid crystals: the elastic constants, helicity parameter, and flexoelectric coefficients. We concentrate on approaches which are based on measuring and correlating molecular orientational stresses, as these have not received much attention ...

Measurement of third-order elastic constants and stress dependent coefficients for steels

Background: There has been little discussion of the third-order elastic constants of steels in the literature until now. In this study, the precise secondand third-order elastic constants of polycrystalline steels were measured under adiabatic and isothermal conditions. Method: Tomeasure theminute change in the propagation time of the elastic wave corresponding to the tensile stress, the unifor...

Martensitic Transformation and Elastic Constants