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Download JNTUA M.Tech 1st Sem 2017 Feb 9D15103 Advanced Mechanics of Solids Question Paper

Download JNTUA (JNTU Anantapur) M.Tech ( Master of Technology) 1st Semester 2017 Feb 9D15103 Advanced Mechanics of Solids Previous Question Paper

This post was last modified on 30 July 2020

This download link is referred from the post: JNTUA M.Tech 1st Sem last 10 year 2010-2020 Previous Question Papers (JNTU Anantapur)


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Code: 9D15103

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M.Tech I Semester Regular & Supplementary Examinations January/February 2017

ADVANCED MECHANICS OF SOLIDS

(Machine Design)

Time: 3 hours

Max. Marks: 60

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Answer any FIVE questions

All questions carry equal marks

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  1. Determine the shear center location C for an aircraft semi-circular box beam whose cross section is shown in figure below.
  2. The masonry column carries an eccentric load P = 12 kN as shown in the figure below:
    1. Locate the points on the cross section where the neutral axis crosses the y- and the z-axes.
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    3. Determine the maximum tensile and compressive normal stresses.
  3. The curved beam in figure is subjected to a load P = 120 kN. The dimensions of section BC are also shown in figure below. Determine the circumferential stress at B and radial stress at the junction of the flange and web at section BC.
    1. What is Prandtl elastic membrane analogy? Explain.
    2. A rod with rectangular cross section is used to transmit torque to a machine frame with a width of 40 mm. The first 3 m length of the rod has a depth of 60 mm, and the remaining 1.5 m length has a depth of 30 mm. The rod is made of steel for which G = 77.5 GPa. For T₁ = 750 N-m and T2 = 400 N-m, determine the maximum shear stress in the rod. Determine the angle of twist of the free end.
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    Contd. in page 2

  4. Derive the stresses for two bodies in line contact: Loads normal and tangent to contact area.
  5. What is plane stress and plane strain? Explain with suitable example.
  6. For a solid in a state of plane stress, show that if there are body forces Px, Py per unit volume in the direction of the axes x, y respectively, the compatibility equation can be expressed in the form: ∇² (σx + σy) = (1 + ν)(∂Px/∂x + ∂Py/∂y)
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    1. What do you mean by compatibility equations? What is the necessity of compatibility equations? Write the compatibility equations in Cartesian co-ordinates.
    2. In planar problems, stress components are expressed in Cartesian co-ordinate system where as the location at which stress is considered is defined in polar co-ordinates. Why such mixed approach adopted? Discuss.
    1. Derive the equations of equilibrium in polar co-ordinates for radial direction & tangential direction.
    2. The stress components at a point are σx = −50, σy = 30, σz = 20. Txy = −60, tyz = 40, Txz = 50 MPa. Determine the principle stresses and principle directions.
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This download link is referred from the post: JNTUA M.Tech 1st Sem last 10 year 2010-2020 Previous Question Papers (JNTU Anantapur)