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!
Find out bulk modulus:
A steel bar of 25 mm diameter was tested on a gauge length of 250 cm in tension and in torsion. A tensile load of 50 kN generated an extension of 0.13 mm and a torque of 200 N-m produced in twist, Find out :
(a) the modulus of elasticity (b) the modulus of rigidity (c) The Poisson's ratio (d) the bulk modulus
Solution
d = 25 mm = 0.025 m
A = (π/4 ) d 2 = 4.9 × 10- 4 m2
J = (π /32) d 4 = 3.8 × 10- 8 m4
l = 25 cm = 0.25 m
P = 50 kN = 50 × 103 N
Δ l = 0.13 mm = 0.13 × 10- 3 m
T = 200 N-m
θ = 1o = 0.017 radians
Δ l = Pl /A E
0.13 × 10- 3 = (50 × 10 × 0.15)/ (4.9 × 10- 4 × E)
∴ E = 2 × 1011 N/m2 = 2 × 105 N/mm2
T/ J = G θ/ l
200 / (3.8 × 10- 8 = (G × 0.017 )/ 0.25
G = 0.77 × 1011 N/m2 = 0.8 × 105 N/mm2
E = 2G (1 + μ)
⇒ 2 × 105 =2 × 0.8 × 105 (1 + μ)
∴ μ= 0.25
E = 3K (1 - 2μ)
2 × 105 = 3 × K (1 - 2 × 0.25)
K = 1.33 × 105 N/mm2
no passing rule definition
Determine maximum internal diameter of hollow shaft: A solid shaft of mild steel which is 200 mm in diameter is to be replaced by hollow shaft of alloy steel for which the al
Carbon Dioxide (CO 2 ) Lasers The CO 2 laser is a gas discharge device and it operates by electric excitation of an active medium that is a mixture of helium, nitrogen an
Stress relaxation is creep related phenomenon: Problem: What is stress relaxation? Give example. Solution Stress relaxation is creep related phenomenon. It is los
importance of process planning system
Flash Butt Welding The two pieces to be welded are pressed against each other by applying a pressure. To whatever finish the faces are machined, there will be some protuberance
If Brakes Drag Causes of Problem Remedy Insufficient pedal free play Recommended brake fluid not used
SHAF T IN SERIES : In order to form composite shaft sometimes 2 shafts are connected in series. In this type of cases each shaft transmits same torque. The angle of twist
Throttling Process: The expansion of gas through an orifice or partly opened valve is called as throttling. q 1 -2 = 0 and w 1 -2 = 0 Now The throt
Derive the finite element formulation for a tapered bar element using Galerkin's method. 1- Start with. 2- Use and as shap
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