A band brake shown below absorbed 30KW when a drum rotates at 500rpm. Drum dia= 500mm, u =0.3 stress for band material= 80Mpa, band thickness = 3mm. Determine width of band?

Question

Answer

Calculation of Band Width for a Band Brake

Given Parameters:

Power = 30 KW

Drum Speed (N) = 500 rpm

Drum Diameter (D) = 500 mm

Coefficient of Friction (u) = 0.3

Stress for Band Material (σ) = 80 MPa

Band Thickness (t) = 3 mm

Formula:

Torque (T) = (Power * 60) / (2 * π * N)

Tension on Band (F) = T / (D / 2)

Band Width (B) = F / (σ * t * u)

Calculation:

First, we need to calculate the torque required to absorb the given power:

T = (30 * 1000 * 60) / (2 * π * 500) = 572.96 Nm

Next, we can calculate the tension on the band:

F = T / (D / 2) = 572.96 / 250 = 2.2918 kN

Finally, we can calculate the required band width:

B = F / (σ * t * u) = 2.2918 / (80 * 10^6 * 3 * 0.3) = 3.21 mm

Answer:

Therefore, the required band width for the given parameters is 3.21 mm.

Answer

9.55??

Similar Mechanical Engineering Doubts

A copper strip of 200mm width and 30mm thickness is to be rolled to a thickness of 25mm. The roll of radius 300mm rotates at 100rpm. The average shear strength of the work material is 180Mpa. The roll strip contact length and the roll force are

A shaft of 120 mm diameter rotates at 100 rpm in a 200 mm long bearing. The angular space between the shaft and bearing is filled with oil of viscosity 0.7 poise. If the thickness of oil film is 0.075 mm, the power absorbed in the bearing is __________ W.

30:n a fumace, the inner and outer sides of the brick wal 23 ) are maintained at 1100 C and 700 "C respectively as shown in below figure. The brick wall is covered by un insulating material o hermal conductivity sulation is of the thickness?

A cylindrical thin drum 80cm in diameter and 3m long has a Shell Thickness of 1cm. If the drum is subjected to an internal pressure of 2.5N/mm2 , determine the change in diameter. Take E=2*10^5N/mm^2; Poisson raio=0.25?

Top Courses for Mechanical EngineeringView all

General Aptitude for GATE

Engineering Mathematics

General Awareness & Knowledge

GATE Mechanical (ME) Mock Test Series 2025

Strength of Materials (SOM)

Top Courses for Mechanical Engineering

Top Courses for Mechanical Engineering

Suggested Free Tests

Related Content

Mock Test Series

Subject-wise Courses

Subject-wise Courses

Other Engg Branches

Company