How is torque related to tension?

How is torque related to tension?

“Torque” is simply a measurement of the twisting force required to spin the nut up along the threads of a bolt, whereas “Tension” is the stretch or elongation of a bolt that provides the clamping force of a joint. This is the most common form of providing load to a bolt.

How do you calculate bolt tension?

The tensile load a fastener can withstand is determined by the formula P = St x As. To find the tensile strength of a particular bolt, you will need to refer to Mechanical Properties of Externally Threaded Fasteners chart in the Fastenal Technical Reference Guide.

What is the K value in torque?

The value of K is a dimensionless torque coefficient that encompasses variables such as those listed above, as well as the most significant variable, friction. The value of K can range from 0.10 for a well lubricated/waxed assembly, to over 0.30 for one that is dirty or rusty.

How the torque is calculated?

The magnitude of a torque about a fixed axis is calculated by finding the lever arm to the point where the force is applied and using the relation |→τ|=r⊥F | τ → | = r ⊥ F , where r⊥ is the perpendicular distance from the axis to the line upon which the force vector lies.

What is the tension formula?

The tension on an object is equal to the mass of the object x gravitational force plus/minus the mass x acceleration.

How is screw torque calculated?

The basic formula T = K x D x P stated earlier takes these factors into account and provides users with a starting point for establishing an initial target tightening torque….What is the Proper Torque to Use on a Given Bolt. by Joe Greenslade.

What is AK factor for bolts?

K Factor (Basic) The K factor is used to account for the energy lost to friction and other factors during the tightening process. The generally accepted K factors for this calculation are: 0.20 for assemblies with dry threads (no lubrication) 0.15 for assemblies with lubricated threads.

How do I calculate tension?

Because of this, we know that, for the weight to be held in equilibrium, the tension force must equal the force of gravity on the weight. In other words, Tension (Ft) = Force of gravity (Fg) = m × g. Assuming a 10 kg weight, then, the tension force is 10 kg × 9.8 m/s2 = 98 Newtons.

What is the formula for torque?

The torque (also moment) about an axis, due to a force, is a measure of the effectiveness of the force in producing rotation about that axis. The torque equation is: τ = rFsinθ.

How do you calculate maximum torque?

Maximum Torque Formula for Induction Motor. The maximum torque is denoted by T m and occurs at s = R 2/X 2. The value of slip which corresponds to maximum torque is denoted by s m. So by substituting s = R 2/X 2 in full load torque expression, we get the maximum torque expression.

How to calculate torque value?

How to Calculate Torque Method 1 of 3: Finding Torque for Perpendicular Forces. Find the length of the moment arm. Method 2 of 3: Figuring out the Torque for Angled Forces. Start with the distance of the radial vector. Method 3 of 3: Determining Torque with Moment of Inertia and Angular Acceleration. Find the moment of inertia.

Determine the tension force on the bolt. This can also be measured using a force transducer (again, if the value is not already known). Assume the tension force is 3 lbs. Subtract the preload force from the tension force. In our example, the tension force (2 lbs.) subtracted from the preload force (3 lbs.) gives 1 lbs.