Design Wind Power Turbine - Hybrid Anisotropic Materials for Wind Power Turbine Blades - page 25

This.system.follows.the.theory.of.Kerhgofa-Klebsha,.which.is.transformed.
on.ive.independent.relations.in.Equation.(2.12).

R

Fy
E S

R

M y

E 1

R

Fz
E S

Mz
E 1z

Mx
GxzT

. . (2.12)

z = ; ; x ; ;

ε ε y = = =

θ = R

1 1 2 2 1 1 R K

Here,.E 1 ,.E 2. =.modulus.of.elasticity;.S 1 ,.S 2. =.section.area;.Iz,.I R. =.moments.of.
inertia.for.axes.x,.R;.Gxz.=.shear.module;.T x. =.geometrical.stiffness.for.torsion.
The. moment. of. inertia. for. axes. x,. R. should. be. determined. as. Equation.
(1.13):

. Iz.=.⌠ s y 2 dS;.Ir.=.⌠ s z 2 dS;. .(2.13)

The.geometrical.stiffness.for.torsion.should.be.determined.as:

. Tx.=.⌠(R 2 θdS

This. force. and. moment. acting. alike. in. gas. turbine. blades. is. what. was.
described. in. Hybrid. Anisotropic. Materials. for. Structural. Aviation. Parts.
(2010). 4 .A.modern.wind.turbine.design.is.shown.in.Figure 2.7. 1

FIGURE 2.7
A.modern.wind.turbine.design.