Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 12, Problem 12.9P
(a)
To determine
Find the friction angle
(b)
To determine
Find the friction angle
(c)
To determine
Find the friction angle,
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CLO 1: A rigid beam rests on two bronze bars 700 mm long. Another aluminum bar is placed between them which is 699.93 mm long. If the allowable stresses are Salum = 90 MPa and Sbronze = 80 MPa, find the maximum weight of the beam that the system can support (in KN).
Note: please help us in this sample problem
2.41 The device shown consists of a disk that is rotated by a
shaft. The disk is positioned very close to a solid boundary. Be-
tween the disk and the boundary is viscous oil.
a. If the disk is rotated at a rate of 1 rad/s, what will be the ra-
tio of the shear stress in the oil at r =
2 cm to the shear stress at
r =
3 cm?
b. If the rate of rotation is 2 rad/s, what is the speed of the oil
in contact with the disk atr = 3 cm?
c. Ifthe oil viscosity is 0.01 N s/m² and the spacing y is 2 mm,
what is the shear stress for the conditions noted in part (b)?
2
Pipe
Oil film
Cylinder
PROBLEM 2.40
In the diagram of a tensile sample:
IEMIJOO TITia
grinsigni pist
-40 mm
4 mm
(1
1998
AMIN
6.5 mm
-20 mm-
a) compute the magnitude of the stress at point P, when the externally
applied stress is 140 MPa.
b) how much would the radius of curvature at the point P need to be
increased to reduce the stress by 25%
Chapter 12 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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