B.E-B.E Aeronautical Engineering Aircraft Structures I(Sathyabama University, Chennai, Tamil Nadu-2010)
Friday, 23 August 2013 02:26Duraimani
(Established under section 3 of UGC Act,1956)
Course & Branch :B.E - AERO
Title of the Paper :Aircraft Structures – I Max. Marks :80
Sub. Code :526405/626403 Time : 3 Hours
Date :06/05/2010 Session :FN
PART - A (10 x 2 = 20)
Answer ALL the Questions
1. What is the difference between truss and frame?
2. What do you mean by statically determined beam? Give example.
3. Define Clapeyron’s theorem.
4. Is a propped cantileves beam a determinate structure or indeterminate structure – Why?
5. State Maxwell’s Reciprocal theorem.
6. Give expression for strain energy.
(a) Tension (b) Bending
7. State the assumptions made while deriving Euler’s buckling formula.
8. What are the uses of a southwell plof?
9. Draw a stress – strain curve for ‘Al-and mark the yield point.
10. List various structural components of fuselage.
PART – B (5 x 12 = 60)
Answer All the Questions
11. (a) Explain internal and external redundancy for a truss.
(b) The truss shown in frag. Determine the vertical deflection of joint B under the application of force p = 50kN. The cross-section of each member is 5cm2 E = 200GPa.
(or)
12. Find the force in the members of the truss shown in fig by any one method.
13. Determine the force X in the diagonal AD taking it as the staticall indeterminate quantity. Assume cross section of all the bars as equal.
(or)
14. A beam of length ‘L’ is fixed at both ends and carries a concentrated load P at the mid point. Find the support moments and deflection at the centre.
15. State and prove Castigliano’s theorem.
(or)
16. Explain how energy principles can be used morden to estimate the buckling load of a column Obtain the critical buckling load for a fixed – fixed.
17. Column starting from the 2nd orders differential equation.
(or)
18. A pin-pin column is subjected to a compressive load ‘P’ with eccentricity ‘C’. Determine the maximum deflection and bending stress in the column.
19. Write short notes on
(a) Distortion theory
(b) Principle of complementency energy
(c) Maximum stress theory
(or)
20. Calculate the strain energy of a simply supported rectangular beam.
| Earning: ₹ 3.05/- |
