Elastic constants of the layer compound GaS

Elastic constants of natural quartz.

The elastic constants of a natural-quartz sphere using resonance-ultrasound spectroscopy (RUS) are measured. The measurements of the near-traction-free vibrational frequencies of the sphere are matched with the predicted frequencies from the dynamic theory of elasticity, with optimized estimates for the elastic constants driving the differences between these sets of frequencies to a minimal val...

The Elastic Constants of Copper Alloys

The elastic constants of single crystals of dilute solutions of Al, Si, Zn, Ga and Ge in Gu have been determined by the ultrasonic pulse method. Alloying causes a decrease in all the fundamental constants, C^, (C-^-C]^)^ and (G11 2C^2)/3> the relative decrease in (Gi2~Gi2)/2 being the greatest. The changes in shear constants Cu, and (C,-,-C-,2)/2 have been interpreted in terms of the known elec...

Molecular Dynamics Investigation of The Elastic Constants and Moduli of Single Walled Carbon Nanotubes

Determination of the mechanical properties of carbon nanotubes is an essential step in their applications from macroscopic composites to nano-electro-mechanical systems. In this paper we report the results of a series of molecular dynamics simulations carried out to predict the elastic constants, i.e. the elements of the stiffness tensor, and the elastic moduli, namely the Young’s and shear mod...

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...

Martensitic Transformation and Elastic Constants