Download GTU BE/B.Tech 2019 Summer 7th Sem New 2171916 Applied Mechanics Of Solid Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

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BE - SEMESTER-VII(NEW) EXAMINATION — SUMMER 2019
Subject Code:2171916 Date:10/05/2019
Subject Name:Applied Mechanics of Solid
Time:02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

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1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Explain Homogeneous deformation. 03

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(b) Define the term “Shear Lag”. 04
(c) Explain Mohr’s circle diagram for principal strains. 07

Q.2 (a) What is Recapitulation? Explain in brief. 03
(b) Explain Yield and Failure criteria. 04
(c) Enlist theory of failures and explain any two. 07

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OR

(c) The state of stress at a point is such that 6x = 6y = 6, = Txy = Ty = Tzx = p 07
Determine the principal stresses and their directions.

Q.3 (a) Elaborate Octahedral Shearing stress theory in theory of failures. 03
(b) Elaborate Saint Venant’s Principle 04

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(c) Derive stress distribution using Airy’s stress function in a simply 07
supported beam subjected to pure bending.

OR

Q.3 (a) What is Circular Polariscope? 03
(b) State basic assumptions for the theory of incremental constitutive relation 04

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for elastic — plastic material.
(c) With the help of neat sketch, discuss behavior of Prandit-Reuss under 07
plane stress [s1, 0, s3].

Q.4 (a) Explain Hooke’s law for elastic material. 03
(b) Derive the equation of stress of thick pressure vessels only subjected to 04

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external pressure.
(c) Explain Normality, Convexity and Uniqueness for an elastic solids. 07

OR

Q.4 (a) Define Principle of super position with an example. 03
(b) Explain Von mises theory. 04

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(c) Explain the Principle of virtual work and prove the relation for elastic 07
solids.

Q.5 (a) State term associated flow rule benefits compared to non-associated flow 03
rules.
(b) State the term Kinematic Hardening for an elasto-plastic material. 04

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(c) Explain Flow rule, effective stress and effective strain for work hardening 07
material.

OR

Q.5 (a) Define: Deformation theory of plasticity. 03
(b) Explain stress strain relation for work hardening material. 04

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(c) State the term Bouschinger Effect for an elasto-plastic material. 07

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