### Solid Circular Segmental Section Torsional Deformation Stress Equation and Calculator

**Beam Deflection and Stress Equation and Calculators**

Torsional Deformation and Stress Circular Segmental Section Equations and Calculator Equations and Calculator.

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Torsional Deformation and Stress Solid Circular Segmental Section Calculator

h = r ( 1 - cosα)

K = 2Cr^{4} where C varies with h/r as follows:

For 0 ≤ h/r ≤ 1.0

C = 0.7854 - 0.0333 (h/r) - 2.6183 (h/r)^{2} + 4.1595 (h/r)^{3} - 3.0769 (h/r)^{4} + 0.9299 (h/r)^{5}

Angle of Twist under applied Torque Moment

θ = ( T L ) / ( K G )

Shear Stress

For 0 ≤ h/r ≤ 1.0

B = 0.6366 + 1.7598 (h/r) - 5.4897 (h/r)^{2} + 14.062 (h/r)^{3} - 14.510 (h/r)^{4} + 6.434 (h/r)^{5}

τ_{max} = TB / r^{3} where B varies with h / r

Where:

θ = angle of twist (radians)

α = degrees

T = Twisting or torque moment force-length, (in-lbs, N-mm)

L = Length (in, mm)

r = Radius (in, mm)

τ = Unit shear stress force / area (lbs/in^{2}, N/mm^{2})

G = Modulus of rigidity force / area (lbs/in^{2}, N/mm^{2})

K = Polar Moment of Inertia (in^{4}, mm^{4}) for section

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