# Clutch Calculations

Topics: Clutch, Iron, Force Pages: 2 (355 words) Published: May 5, 2013
DESIGN AND ANALYSIS OF CLUTCH ASSEMBLY
FINAL REVIEW

Submitted to: Prof. Venkatesan S
Guide : Prof.Deepa A

Submitted by:
K Sravan Kumar (10bme0249)
D Srinath (10bme0071)
S Bharath (10bme0466)

Place: Vellore Date: 02-05-2013

Calculations of Multi Plate Clutch:
Taking Grey Cast Iron as clutch plate material and Sintered Copper as friction plate material Inner diameter of Clutch plate‘d’ = 54mm
Outer diameter of Clutch plate ‘D’ = 150 mm
Number of contacting surfaces ‘z’ = 6
Taking allowable maximum stress = 1N/mm²
Axial force acting ‘P’ = π.p.d(D-d)/2
= π x 1 x 54 x (150-54)
= 16286 N
Torque that can be transmitted = µ.P.z(D+d)/4
= 0.5 x 16286 x 6 (150+54)/4
= 2491.76 N-m
Thus the value of torque transmitted is high for multi plate clutch.

Bill of materials for Multiple Plate Clutch:
Part nameMaterialQuantity
Clutch plateGrey cast iron4
Friction plateSintered copper3
Diaphragm springsteel1
Pressure plateGrey cast iron1
FlywheelAlloy steel1
ShaftAl alloy2

Parts of a clutch:
Main parts are Clutch disc, Friction plate, Pressure plate, Fly wheel, Spring, Spring nut. We prepared these parts using solid works software using appropriate dimensions.
Bill of materials for single plate clutch:

Conclusions:
Based on the stress and displacement analysis the materials that can be used for clutch is grey cast iron and that for the friction plate is sintered copper. •Though for (grey cast iron and ZnAC43A) the max. von mises stress obtained is low compared to other material above material is chosen because coefficient of friction is 0.5 between them and much torque can be transmitted compared to that of other materials. •The importance of multi plate clutch is noticed since the size required is less for the required transmission of...

References: • Textbook of Automobile Engineering by Dr.Kirpal Singh
• Power-Transmission Course by Detlef Jurk
• Solid Mechanics –Clutches chapter by D.J.Dunn
• PSG Design Data Book
• Daikin Clutch Fundamentals
• Design of Machine Elements by V.B. Bhandhari