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Split hollow shift b c M r o r i h
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Values for calculation

$T$ $\mathrm{Nm}$
$r_o$ $\mathrm{mm}$
$r_i$ $\mathrm{mm}$
$h$ $\mathrm{mm}$
$L$ $\mathrm{mm}$
$G$ $\mathrm{MPa}$

Calculation

Coefficient $ C_1 $

$$C_1=0.4427+0.0064\cdot\cfrac{h}{r_i}-0.0201\cdot\left(\cfrac{h}{r_i}\right)^2$$
$C_1=0.4427+0.0064\cdot\cfrac{h}{r_i}-0.0201\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
C_1=0.4427+0.0064\cdot\cfrac{h}{r_i}-0.0201\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ C_2 $

$$C_2=-0.8071-0.4047\cdot\cfrac{h}{r_i}+0.1051\cdot\left(\cfrac{h}{r_i}\right)^2$$
$C_2=-0.8071-0.4047\cdot\cfrac{h}{r_i}+0.1051\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
C_2=-0.8071-0.4047\cdot\cfrac{h}{r_i}+0.1051\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ C_3 $

$$C_3=-0.0469+1.2063\cdot\cfrac{h}{r_i}-0.3538\cdot\left(\cfrac{h}{r_i}\right)^2$$
$C_3=-0.0469+1.2063\cdot\cfrac{h}{r_i}-0.3538\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
C_3=-0.0469+1.2063\cdot\cfrac{h}{r_i}-0.3538\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ C_4 $

$$C_4=0.5023-0.9618\cdot\cfrac{h}{r_i}+0.3639\cdot\left(\cfrac{h}{r_i}\right)^2$$
$C_4=0.5023-0.9618\cdot\cfrac{h}{r_i}+0.3639\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
C_4=0.5023-0.9618\cdot\cfrac{h}{r_i}+0.3639\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ C $

$$C=C_1+C_2\cdot\cfrac{r_i}{r_o}+C_3\cdot\left(\cfrac{r_i}{r_o}\right)^2+C_4\cdot\left(\cfrac{r_i}{r_o}\right)^3$$
$C=C_1+C_2\cdot\cfrac{r_i}{r_o}+C_3\cdot\left(\cfrac{r_i}{r_o}\right)^2+C_4\cdot\left(\cfrac{r_i}{r_o}\right)^3$
Equations in LaTeX code
C=C_1+C_2\cdot\cfrac{r_i}{r_o}+C_3\cdot\left(\cfrac{r_i}{r_o}\right)^2+C_4\cdot\left(\cfrac{r_i}{r_o}\right)^3

Coefficient $ B_1 $

$$B_1=2.0014-0.14\cdot\cfrac{h}{r_i}-0.3231\cdot\left(\cfrac{h}{r_i}\right)^2$$
$B_1=2.0014-0.14\cdot\cfrac{h}{r_i}-0.3231\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
B_1=2.0014-0.14\cdot\cfrac{h}{r_i}-0.3231\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ B_2 $

$$B_2=2.9047+3.0069\cdot\cfrac{h}{r_i}-4.05\cdot\left(\cfrac{h}{r_i}\right)^2$$
$B_2=2.9047+3.0069\cdot\cfrac{h}{r_i}-4.05\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
B_2=2.9047+3.0069\cdot\cfrac{h}{r_i}-4.05\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ B_3 $

$$B_3=-15.721-6.5077\cdot\cfrac{h}{r_i}-12.496\cdot\left(\cfrac{h}{r_i}\right)^2$$
$B_3=-15.721-6.5077\cdot\cfrac{h}{r_i}-12.496\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
B_3=-15.721-6.5077\cdot\cfrac{h}{r_i}-12.496\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ B_4 $

$$B_4=29.553+4.1115\cdot\cfrac{h}{r_i}+18.845\cdot\left(\cfrac{h}{r_i}\right)^2$$
$B_4=29.553+4.1115\cdot\cfrac{h}{r_i}+18.845\cdot\left(\cfrac{h}{r_i}\right)^2$
Equations in LaTeX code
B_4=29.553+4.1115\cdot\cfrac{h}{r_i}+18.845\cdot\left(\cfrac{h}{r_i}\right)^2

Coefficient $ B $

$$B=B_1+B_2\cdot\cfrac{r_i}{r_o}+B_3\cdot\left(\cfrac{r_i}{r_o}\right)^2+B_4\cdot\left(\cfrac{r_i}{r_o}\right)^3$$
$B=B_1+B_2\cdot\cfrac{r_i}{r_o}+B_3\cdot\left(\cfrac{r_i}{r_o}\right)^2+B_4\cdot\left(\cfrac{r_i}{r_o}\right)^3$
Equations in LaTeX code
B=B_1+B_2\cdot\cfrac{r_i}{r_o}+B_3\cdot\left(\cfrac{r_i}{r_o}\right)^2+B_4\cdot\left(\cfrac{r_i}{r_o}\right)^3

Polar moment of inertia

$$K=2\cdot C\cdot r_o^4$$
$K=2\cdot C\cdot r_o^4$
Equations in LaTeX code
K=2\cdot C\cdot r_o^4

Angle of twist

$$θ=\cfrac{T\cdot 10^3\cdot L}{K\cdot G}$$
$θ=\cfrac{T\cdot 10^3\cdot L}{K\cdot G}$
Equations in LaTeX code
θ=\cfrac{T\cdot 10^3\cdot L}{K\cdot G}

Torsion stress at $ M $

$$τ_{max-at-M}=\cfrac{10^3\cdot T\cdot B}{r_o^3}$$
$τ_{max-at-M}=\cfrac{10^3\cdot T\cdot B}{r_o^3}$
Equations in LaTeX code
τ_{max-at-M}=\cfrac{10^3\cdot T\cdot B}{r_o^3}

Requirements

$$0.2 \le\cfrac{r_i}{r_o} \le 0.6$$
$0.2 \le\cfrac{r_i}{r_o} \le 0.6$
Equations in LaTeX code
0.2 \le\cfrac{r_i}{r_o} \le 0.6
$$0.1 \le\cfrac{h}{r_i} \le 1$$
$0.1 \le\cfrac{h}{r_i} \le 1$
Equations in LaTeX code
0.1 \le\cfrac{h}{r_i} \le 1
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