Unlocking the Power of ChatGPT and AI in Testing - A Real-World Look, present...
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1. University College of Engineering and Technology, Bikaner
(Constituent College of Bikaner Technical University, Bikaner)
(Established by the Govt. Act No. 29 of 2017)
Mechanical Engineering Department
Address: University College of Engineering & Technology Campus, RIICO Karni Industrial Area, Pugal Road, Bikaner -334004
Phone: 0151-2250940, 50 Email: reg@btu.rajasthan.gov.in Web Site: http://btu.rajasthan.gov.in
M.Tech Semester II- First Midterm Exam 2020-21
Time 1 hr Theory of plasticity Max. Marks 20
Question 1. The displacement components in a strained body are:
U=0.01y2z+0.25xyz
V=0.03x2y+0.04x2yz
W=0.25xyz-0.05xyz2
Determine the strain tensor, rotation tensor and angle ofrotation at the point(-1,-2,3).
Question 2. The state of strain at a poitnt is given by
Ɛx =0.01 ; Ɛy =0.03 ; Ɛz =0.05
Ƴxy =0.024 ; Ƴyz =0.016; Ƴxz =0.030
Determine the three principal strain. Also find the direction of the major principal strain.
Question 3. A stress system has three principal stresses σ1= 50Mpa. , σ1= 20Mpa. And σ1= -
10Mpa. Find
The octahedral normal and shear stresses forthis system, and check the answer drawing the
Mohr’s circel.