Download GTU BE/B.Tech 2017 Winter 7th Sem New 2171916 Applied Mechanics Of Solid Department Elective I Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 7th Sem New 2171916 Applied Mechanics Of Solid Department Elective I Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2171916 Date:02/11/2017

Subject Name: Applied Mechanics of Solid(Department Elective - I)

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS

Q.1 (a) Enlist theory of failures and explain any one. 03
(b) Define: 1) Body forces, 2) Surface forces 04
(c) Explain Mohr?s circle diagram for principal stresses. 07

Q.2 (a) Explain Boundary conditions. 03
(b) What is Recapitulation? Explain in brief. 04
(c) Derive equation of Principal stresses in 2D. 07
OR
(c) The state of stress at a point is such that
?
x
= ?
y
= ?
z
= ?
xy
= ?
yz
= ?
zx
= ?
Determine the principal stresses and their directions.
07
Q.3 (a) Elaborate Octahedral Shearing stress theory in theory of
failures.
03
(b) State basic assumptions for the theory of incremental
constitutive relation for elastic ? plastic material.
04
(c) With the help of neat sketch, discuss behavior of Prandit-
Reuss under plane stress ?
ij
= [?
1
, 0 , ?
3
].
07
OR
Q.3 (a) What is Circular Polariscope? 03
(b) Define: Plane stress and plane strain. 04
(c) Derive stress distribution using Airy?s stress function in a
simply supported beam subjected to pure bending.
07
Q.4 (a) State compatibility equations if body forces are constant. 03
(b) Difference between linear and non-linear elastic isotropic
stress strain relation.
04
(c) Explain Normality, Convexity and Uniqueness for an
elastic solids.
07
OR
Q.4 (a) Explain Hooke?s law for elastic material. 03
(b) Derive the equation of stress of thick pressure vessels
only subjected to internal pressure.
04
(c) Explain the Principle of virtual work and prove the
relation for elastic solids.
07
Q.5 (a) State term associated flow rule benefits compared to non-
associated flow rules.
03
(b) State the term Bouschinger Effect for an elasto-plastic
material
04
(c) Discuss flow rules associated with von Mises yield
function for perfectly plastic material.
07
OR

FirstRanker.com - FirstRanker's Choice
1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2171916 Date:02/11/2017

Subject Name: Applied Mechanics of Solid(Department Elective - I)

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS

Q.1 (a) Enlist theory of failures and explain any one. 03
(b) Define: 1) Body forces, 2) Surface forces 04
(c) Explain Mohr?s circle diagram for principal stresses. 07

Q.2 (a) Explain Boundary conditions. 03
(b) What is Recapitulation? Explain in brief. 04
(c) Derive equation of Principal stresses in 2D. 07
OR
(c) The state of stress at a point is such that
?
x
= ?
y
= ?
z
= ?
xy
= ?
yz
= ?
zx
= ?
Determine the principal stresses and their directions.
07
Q.3 (a) Elaborate Octahedral Shearing stress theory in theory of
failures.
03
(b) State basic assumptions for the theory of incremental
constitutive relation for elastic ? plastic material.
04
(c) With the help of neat sketch, discuss behavior of Prandit-
Reuss under plane stress ?
ij
= [?
1
, 0 , ?
3
].
07
OR
Q.3 (a) What is Circular Polariscope? 03
(b) Define: Plane stress and plane strain. 04
(c) Derive stress distribution using Airy?s stress function in a
simply supported beam subjected to pure bending.
07
Q.4 (a) State compatibility equations if body forces are constant. 03
(b) Difference between linear and non-linear elastic isotropic
stress strain relation.
04
(c) Explain Normality, Convexity and Uniqueness for an
elastic solids.
07
OR
Q.4 (a) Explain Hooke?s law for elastic material. 03
(b) Derive the equation of stress of thick pressure vessels
only subjected to internal pressure.
04
(c) Explain the Principle of virtual work and prove the
relation for elastic solids.
07
Q.5 (a) State term associated flow rule benefits compared to non-
associated flow rules.
03
(b) State the term Bouschinger Effect for an elasto-plastic
material
04
(c) Discuss flow rules associated with von Mises yield
function for perfectly plastic material.
07
OR

2
Q.5 (a) Explain stress strain relation for work hardening
material.
03
(b) State the term Kinematic Hardening for an elasto-plastic
material.
04
(c) Write a note on Druker?s stability postulate for stability
of work-hardening materials.
07

*************
FirstRanker.com - FirstRanker's Choice