Values of the coefficient of elasticity (stiffness) k Y and of the elastic modulus Y were calculated as: left.{k}_Ykern0.5em =kern0.5em frac{dE}{de}right|e=0 (7) Ykern0.5em =kern0.5em frac{k_Y}{S} (8).
For carbynes containing more than 10 to 12 atoms, the coefficient of elasticity (k Y = 145.40 nN) and the elastic modulus (Y = 4631 GPa) are ascertain.
Strength of such carbyne is ≈ 12.35 nN (393 GPa) (at 0 K), the coefficient of elasticity - k Y = 145.40 nN, and elastic modulus - Y = 4631 GPa. .
The proportionality constant is the coefficient of elasticity Ye, also called Young's modulus for the English physicist Thomas Young.
Fc is the critical stresses for instability of the chains; k Y is the coefficient of elasticity of the chain; N is the number of atoms in carbyne.
Metal borates are considered among the most important of these materials because of their unique properties, such as their light weight, high strength, high heat-resistance, corrosion-resistance, and high coefficient of elasticity, etc.
For artificial bone, rigid polyurethane foam (Solid Rigid Polyurethane Foam 20 pcf; Sawbones; Pacific Research Laboratories Inc., USA) measuring 18 × 4 × 13 cm and approaching the maxilla molar part bone density (0.32 g/cc) and physical properties (compressive strength, 8.4 MPa; tensile strength, 5.6 MPa; shear strength, 4.3 MPa; coefficient of elasticity, 284 GPa) [24] was employed.
The result is an index of deformation (i.e. a strain index or a coefficient of elasticity) that can be compared with the organ's reference values, and that rises as the rigidity of the structure being examined increases.
This finding is in agreement with the literature [ 5, 6], and seems to confirm the hypothesis that the concurrent alterations of structure and coefficient of elasticity of cartilages and capsule may limit the active range of motion of long-term patients with diabetes.
The model is used for parametric studies of various properties such as longitudinal shrinkage coefficient, modulus of elasticity and cross-sectional size of the timber studs and stiffness of the cladding.
