Download JNTUA M.Tech 2nd Sem Supply 2018 Feb 9D15205 Theory of Plasticity Question Paper

Download JNTUA (JNTU Anantapur) M.Tech ( Master of Technology) 2nd Semester Supply 2018 Feb 9D15205 Theory of Plasticity Previous Question Paper || Download M.Tech 2nd Sem 9D15205 Theory of Plasticity Question Paper || JNTU Anantapur M.Tech Previous Question Paper

Code: 9D15205

M.Tech II Semester Supplementary Examinations February 2018
THEORY OF PLASTICITY
(Machine Design)
(For students admitted in 2012, 2013, 2014, 2015 & 2016 only)

Time: 3 hours Max. Marks: 60
Answer any FIVE questions
All questions carry equal marks
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1 Discuss about Mohr?s representation of stress in 2&3 dimensions.

2 Explain about strain displacement relationships.

3 Explain about incremental stress strain relations.

4 A thick cylinder of internal radius 15 cm and external radius 25 cm is subjected to an
internal pressure ?p? MPa. If the yield stress for the cylinder material is 220 N/mm
2
,
determine: (i) The pressure at which the cylinder will start yielding just at the inner radius.
(ii) The stresses in the cylinder when the cylinder has a plastic front radius of 20 cm.
(iii) The stresses when the whole of the cylinder has yielded. Assume Von-Mises yield
condition and a state of plane strain.

5 Discuss about Drucker Prager material and general isotropic material.

6 Explain about deformation theory of plasticity.

7 Discuss about numerical algorithms for solving non linear equations.

8 Explain about upper and lower bound theorems.

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