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Assembly using a torque wrench
Values for calculation
Calculation
Pitch between bolts (first flange of the joint)
$$p_B=π\cdot d_3/n_B$$
$p_B=π\cdot d_3/n_B$
Equations in LaTeX code
p_B=π\cdot d_3/n_B
Pitch between bolts (second flange of the joint)
$$\tilde{p}_B=p_B$$
$\tilde{p}_B=p_B$
Equations in LaTeX code
\tilde{p}_B=p_B
Effective bolt circle diameter (first flange of the joint)
$$d_{3e}=d_3\cdot\left(1-2/n_B^2\right)$$
$d_{3e}=d_3\cdot\left(1-2/n_B^2\right)$
Equations in LaTeX code
d_{3e}=d_3\cdot\left(1-2/n_B^2\right)
Effective bolt circle diameter (second flange of the joint)
$$\tilde{d}_{3e}=d_{3e}$$
$\tilde{d}_{3e}=d_{3e}$
Equations in LaTeX code
\tilde{d}_{3e}=d_{3e}
Effective diameters of bolt holes (first flange of the joint)
$$d_{5e}=d_5\cdot\sqrt{d_5/p_B}$$
$d_{5e}=d_5\cdot\sqrt{d_5/p_B}$
Equations in LaTeX code
d_{5e}=d_5\cdot\sqrt{d_5/p_B}
Effective diameters of bolt holes (second flange of the joint)
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Impact wrench}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Impact wrench}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Impact wrench}
$$ε_{1-}=0.2+0.5\cdot μ_t$$
$ε_{1-}=0.2+0.5\cdot μ_t$
Equations in LaTeX code
ε_{1-}=0.2+0.5\cdot μ_t
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Torque wrench. Wrench with measuring of torque}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Torque wrench. Wrench with measuring of torque}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Torque wrench. Wrench with measuring of torque}
$$ε_{1-}=0.1+0.5\cdot μ_t$$
$ε_{1-}=0.1+0.5\cdot μ_t$
Equations in LaTeX code
ε_{1-}=0.1+0.5\cdot μ_t
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Hydraulic tensioner. Measuring of hydraulic pressure}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Hydraulic tensioner. Measuring of hydraulic pressure}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Hydraulic tensioner. Measuring of hydraulic pressure}
$$ε_{1-}=0.2$$
$ε_{1-}=0.2$
Equations in LaTeX code
ε_{1-}=0.2
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench or hydraulic tensioner. Measuring of bolt elongation}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench or hydraulic tensioner. Measuring of bolt elongation}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench or hydraulic tensioner. Measuring of bolt elongation}
$$ε_{1-}=0.15$$
$ε_{1-}=0.15$
Equations in LaTeX code
ε_{1-}=0.15
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench. Measuring of turn of nut}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench. Measuring of turn of nut}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench. Measuring of turn of nut}
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Impact wrench}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Impact wrench}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Impact wrench}
$$ε_{1+}=0.2+0.5\cdot μ_t$$
$ε_{1+}=0.2+0.5\cdot μ_t$
Equations in LaTeX code
ε_{1+}=0.2+0.5\cdot μ_t
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Torque wrench. Wrench with measuring of torque}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Torque wrench. Wrench with measuring of torque}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Torque wrench. Wrench with measuring of torque}
$$ε_{1+}=0.1+0.5\cdot μ_t$$
$ε_{1+}=0.1+0.5\cdot μ_t$
Equations in LaTeX code
ε_{1+}=0.1+0.5\cdot μ_t
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Hydraulic tensioner. Measuring of hydraulic pressure}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Hydraulic tensioner. Measuring of hydraulic pressure}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Hydraulic tensioner. Measuring of hydraulic pressure}
$$ε_{1+}=0.4$$
$ε_{1+}=0.4$
Equations in LaTeX code
ε_{1+}=0.4
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench or hydraulic tensioner. Measuring of bolt elongation}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench or hydraulic tensioner. Measuring of bolt elongation}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench or hydraulic tensioner. Measuring of bolt elongation}
$$ε_{1+}=0.15$$
$ε_{1+}=0.15$
Equations in LaTeX code
ε_{1+}=0.15
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench. Measuring of turn of nut}$
$\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench. Measuring of turn of nut}$
Equations in LaTeX code
\text{else if }\ \text{bolting-up }$$\text{(tightening) }$$\text{method }$$\text{measuring }$$\text{method}= \text{Wrench. Measuring of turn of nut}
$$ε_{1+}=0.1$$
$ε_{1+}=0.1$
Equations in LaTeX code
ε_{1+}=0.1
$\text{else}$
$\text{else}$
Equations in LaTeX code
\text{else}
$$ε_{1+}=0.07$$
$ε_{1+}=0.07$
Equations in LaTeX code
ε_{1+}=0.07
Scatter value of the initial bolt load for $ n_B $ bolts aboove nominal value