scholarly journals Cubic crystal elastic constants of a white dwarf stellar core determined via modal analysis

AIP Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 105111
Author(s):  
K. A. Pestka ◽  
A. M. Crews ◽  
R. C. Highley ◽  
L. K. Deale
Keyword(s):  
Modal Analysis ◽  
Elastic Constants ◽  
White Dwarf ◽  
Cubic Crystal ◽  
Stellar Core

scholarly journals Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
O. N. Senkov ◽  
D. B. Miracle
Keyword(s):  
Crystal Structure ◽  
Shear Modulus ◽  
Bulk Modulus ◽  
Single Crystal ◽  
Elastic Constants ◽  
Mechanical Analysis ◽  
Quantum Mechanical ◽  
Modulus Ratio ◽  
Cubic Crystal ◽  
The Difference

AbstractTwo classical criteria, by Pugh and Pettifor, have been widely used by metallurgists to predict whether a material will be brittle or ductile. A phenomenological correlation by Pugh between metal brittleness and its shear modulus to bulk modulus ratio was established more than 60 years ago. Nearly four decades later Pettifor conducted a quantum mechanical analysis of bond hybridization in a series of intermetallics and derived a separate ductility criterion based on the difference between two single-crystal elastic constants, C12–C44. In this paper, we discover the link between these two criteria and show that they are identical for materials with cubic crystal structures.

Determination of orthotropic bone elastic constants using FEA and modal analysis

2002 ◽  
Vol 35 (6) ◽  
pp. 767-773 ◽  
Author(s):  
W.R. Taylor ◽  
E. Roland ◽  
H. Ploeg ◽  
D. Hertig ◽  
R. Klabunde ◽  
...  
Keyword(s):  
Modal Analysis ◽  
Elastic Constants

Calculation of Single-Crystal Elastic Constants for Cubic Crystal Symmetry from Powder Diffraction Data

1998 ◽  
Vol 31 (6) ◽  
pp. 929-935 ◽  
Author(s):  
Thomas Gnäupel-Herold ◽  
Paul C. Brand ◽  
Henry J. Prask
Keyword(s):  
Single Crystal ◽  
Least Squares ◽  
Powder Diffraction ◽  
Elastic Constants ◽  
Diffraction Data ◽  
Lattice Strain ◽  
Strain Response ◽  
Powder Diffraction Data ◽  
Cubic Crystal ◽  
Cubic Symmetry

In this work a method is developed that allows the computation of the single-crystal elastic constants for crystals of cubic symmetry from the diffraction elastic constants. The diffraction elastic constants can be obtained by measuring thehkl-dependent lattice strain response to an applied stress. Because of theirhkldependence they represent, partially, the anisotropic nature of the single-crystal elastic constants. The computation of the single-crystal elastic constants is carried out by a least-squares refinement which fits the calculated diffraction elastic constants to the measured ones.

Elastic constants of a stressed crystal. II. Cubic crystal

1979 ◽  
Vol 53 (1) ◽  
pp. 75-85 ◽  
Author(s):  
E. V. Zarochentsev ◽  
S. M. Orel ◽  
V. N. Varyukhin
Keyword(s):  
Elastic Constants ◽  
Cubic Crystal
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