SHIGLEY'S MECH.ENGINEERING DESIGN-EBK>I
10th Edition
ISBN: 9781259489563
Author: BUDYNAS
Publisher: INTER MCG
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Textbook Question
Chapter 5, Problem 19P
A brittle material has the properties Sut = 30 kpsi and Suc = 90 kpsi. Using the brittle Coulomb-Mohr and modified-Mohr theories, determine the factor of safety for the following states of plane stress.
- (a) σx = 25 kpsi, σy = 15 kpsi
- (b) σx = 15 kpsi, σy = –15 kpsi
- (c) σx = 20 kpsi, τxy = –10 kpsi
- (d) σx = –15 kpsi, σy = 10 kpsi, τxy = –15 kpsi
- (e) σx = –20 kpsi, σy = –20 kpsi, τxy = –15 kpsi
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A brittle material has the properties . Sut = 30 kpsi and Suc = 90 kpsi Using the brittle Coulomb-Mohr and modified-Mohr theories, determine the factor of safety for the following states of plane stress.
What is the Weibull modulus of this material?
Would you advise the use of a similar material with a Weibull Modulus of 16.3 and a mean failure stress of 485 MPa, if you anticipate that the peak stress on the material could be 430 MPa?
a. 15.7
b. Yes
c. 18.6
d. 13.4
e. No
f. 17.1
A copper specimen of Young's Modulus 120 GPa is subjected to a tensile test in a laboratory and the following data are obtained.
a) Initial length of the Specimen = 395 mm;
b) Initial diameter of Specimen = 10 mm;
c) Yield Stress = 133 N/mm2;
d) Ultimate Stress = 228 N/mm2;
e) Fracture Stress = 178 N/mm2;
g) % of Elongation = 59 %;
h) % of Reduction in area = 41 %.
Determine the following
i) The elongation of the specimen at load 101 kN (in mm)
ii) Maximum load (in N)
iii) Fracture load (in N)
iv) Final Length (in mm)
v) Final Diameter
Chapter 5 Solutions
SHIGLEY'S MECH.ENGINEERING DESIGN-EBK>I
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Understanding Failure Theories (Tresca, von Mises etc...); Author: The Efficient Engineer;https://www.youtube.com/watch?v=xkbQnBAOFEg;License: Standard youtube license