Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Design the keys - Shear Keys:
A solid circular shaft is to transmit 200 kN at 200 rpm. If the maximum shear stress is not to exceed 80 n/mm2 design the shaft. Design the keys and discover number of 16 mm diameter bolt needed to connect coupling along with a bolt circle of 240 mm diameter.
Permissible stress in keys = 100 N/mm2
Permissible stress in bolts = 100 N/mm2
Solution
Length of the key = 200 mm
P = 200 kN N = 200 rpm Shaft
d = ?
P = 2π NT / 60
⇒200 × 103 = (2π × 200 × T) /60
∴ T = 9.5 × 103 N-m
T /J = τmax /R ∴ τ max = 16T/ π d 3
⇒ 80 × 106 = 16 × (9.5 × 10 ) / π d 3
∴ d = 0.085 m ≈ 85 mm
Shear Keys
T = 9.5 × 103 N-m
τ1 = 100 N/mm2
L = 200 mm = 0.2 m
T = τ1 L b R
⇒ 9.5 × 103 = (100 × 106 ) (0.2) b ( 0.085/2)
∴ b = 0.011 m ≈ 11 mm
Bolts
τ2 = 100 N/mm2
d = 16 mm
F = τ2 (π/4) d 2
= 100 × (π /4 )× 162 = 20106.2 N
R1 = 240 /2 = 120 mm = 0.12 m
T = η . F2 . R1
⇒ 9.5 × 103 = η × 20106.2 × 0.12
∴ η = 3.9 ≈ 4
Consider laminar flow in a circular tubewith a fully developed velocity profile.Let the heat be added at a constant rate along the tube from x+ =0 to x+ =0.10 . Thereafter ,let
Composite Materials While two various materials which neither react chemically nor dissolve in every other are combined together so they form a composite materials. Individual
what are the advanteges of the working ?
Strain energy stored in a body due to impact load
Carno t Theorem: No heat engine operating in cycle between the two given thermal reservoir, having fixed temperature can be more efficient than reversible engine operating be
inertia force?
Q. General corrosion rates of castings? Austenitic stainless steels (300 series) are very resistant to caustic in concentrations up to 50% and temperatures below 200 o F (95 o
what is the cross head velocity in slider crank mechanism.
Linear velocity of links using Instantaneous center method
1) Factor of Safety is calculated by using which of the following set of values? [Select the one best answer from the choices given below.] Answer a. Yield Stress and Allowable St
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd