Elastic stiffness constant
is associated with the different compositions of system stress and strain.
where [E.sub.0] and [E.sub.1] represent the stiffness constant
and viscosity coefficient of the string, respectively, and a is a constant which is used to describe the viscosity characteristic.
where [Q'.sub.ij] is the reduced stiffness constant
of a unidirectional.
E is modulus of elasticity, according to the material conditions of E = 180 GPa, u = 0.3, [C.sup.1], [C.sup.2], [c.sup.3], [C.sup.4] is the stiffness constant
of wire rope.
Bending Stiffness: Increase in foundation thickness, while keeping the spring stiffness constant
, also affects the superstructure design.
The parameters for the experimental aeroservoelastic model are: wing chord (C=2b=0.182 m), wing span (L=0.4 m), rotation axis--CE (~ 28%C), mass center of the model--CG (~ 42%C), flap hinge line--S (~ 70%C), model mass (M=1.855 kg), model mass static moment about CE ([S.sub.[alpha]]=0.01729 kg x m), model mass moment of inertia about CE ([I.sub.[alpha]]=2.745 x [10.sup.-3] kg x [m.sup.2]), "plunge"-suspension stiffness constant
([K.sub.w] = 321.6 N/m), "pitch"-suspension stiffness constant
([K.sub.[alpha]]=1.25 Nm/rad), damping coefficients as a fraction of critical damping ([[zeta].sub.w]=0.1, [[zeta].sub.a]=0.1), aerodynamic coefficients of the model measured in wind tunnel [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII].
Divide the reaction forces found in step "b" at the L/3 and 2L/3 points by the corresponding deflections found in step "a" in order to determine the stiffness constant
([k.sub.r]) for the unsupported rail (where stiffness refers to force divided by deflection).
where [[lambda].sup.2] = 3[G.sup.0.sub.xy] ([t.sub.0] + [t.sub.90])[E.sup.0.sub.x]/[t.sup.2.sub.90][t.sub.0][E.sub.11][E.sub.22], and the laminate stiffness constants
for shear [G.sup.0.sub.xy] = [G.sub.23]/(1+ [t.sub.0][G.sub.23]/[t.sub.90][G.sub.12]) and Young's modulus [E.sup.0.sub.x] = ([t.sub.0][E.sub.11] + [t.sub.90][E.sub.22])/([t.sub.0] + [t.sub.90]), subject to a global load [[sigma].sub.c].
where F denotes constrained force, k denote stiffness constants
, u denotes displacement, and a is a small parameter.
For this mode, the static load and the stiffness constants
[C.sub.z1], [C.sub.z2], M, and [b.sub.z] can be identified as
Te relevant parameters such as effective masses of electron, heavy-hole and light-hole, the lattice constant, hydrostatic (a) and shear (b) deformation potentials, and the elastic stiffness constants
[C.sub.11] and [C.sub.12] of the ternary material are listed in Table 1 with their corresponding references.
Second, all stiffness constants
are determined separately, and requirements from a thermodynamic point of view, such as objectivity are not incorporated when simply applying the anisotropic stiffnesses as finite strain tangent stiffness.