A body is subjected to uniaxial tensile stress of 20 MPa in the y-direction as well as a temperature decrease of 10 degrees K. The material's elastic modulus is 90 GPa, the Poisson's ratio is 0.20, and the coefficient of thermal expansion is 12E-6 per degree K. What are the normal strains in the x, y, and z directions (microstrain units) ? Exx —102, € yу — 51, YY Ezz 82 -164, E yy –164, Exx = Ezz = -164 -164, E yy 102, Exx = Ezz = -164 164, Eyy - 102, Exx

A body is subjected to uniaxial tensile stress of 20 MPa in the y-direction as well as a temperature decrease of 10 degrees K. The material's elastic modulus is 90 GPa, the Poisson's ratio is 0.20, and the coefficient of thermal expansion is 12E-6 per degree K. What are the normal strains in the x, y, and z directions (microstrain units) ? Exx —102, € yу — 51, YY Ezz 82 -164, E yy –164, Exx = Ezz = -164 -164, E yy 102, Exx = Ezz = -164 164, Eyy - 102, Exx

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

A body is subjected to uniaxial tensile
stress of 20 MPa in the y-direction as
well as a temperature decrease of 10
degrees K. The material's elastic
modulus is 90 GPa, the Poisson's ratio
is 0.20, and the coefficient of thermal
expansion is 12E-6 per degree K.
What are the normal strains in the x, y,
and z directions (microstrain units) ?
Exx
–102, ɛyy = 51,
Ezz
82
-164, ɛ yy
-164,
Exx
%3D
Ezz
-164
-164, E yy
102,
Exx =
Ezz = -164
164, E yy
- -102,
Exx

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