Design a muff coupling to connect two shafts transmitting 40 kW at 120 r.p.m. The permissible...

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Mechanical Engineering

Design a muff coupling to connect two shafts transmitting 40 kWat 120 r.p.m. The permissible shear
and crushing stress for the shaft and key material (mild steel) are30 MPa and 80 MPa respectively.
The material of muff is cast iron with permissible shear stress of15 MPa. Assume that the maximum
torque transmitted is 25 per cent greater than the mean torque.

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