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Roll No. [ ] [T Total No. of Pages : 03
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Total No. of Questions : 09
B.Tech.(ANE) (Sem.-5)
AIRCRAFT STRUCTURES-II
Subject Code : ANE-313
M.Code : 60522
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Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
- Write briefly :
- Write statement of energy approach for prediction of buckling of a column.
- What is dynamic approach for prediction of buckling of a column?
- Write boundary conditions for a simply supported plate.
- Explain application of Rayleigh Ritz method for prediction of buckling of a plate.
- Explain application of Galerkin’s method for prediction of buckling of a plate.
- What do you understand by effective width of a plate?
- Differentiate between a pure tension field beam and a semi tension field beam.
- Write stiffness matrix of a single spring of stiffness ‘k’ placed along x axis.
- What is flexible method used for matrix analysis?
- What are advantages of finite element method over matrix method of analysis?
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SECTION-B
- The pin-jointed column as shown below carries a compressive load P applied eccentrically at a distance e from the axis of the column. Determine the maximum bending moment in the column.
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FIG.1 - A rectangular plate shown below is compressed by a uniformly distributed load Ny acting along two opposite ends which are simply supported. Obtain the buckling load of the plate by Rayleigh-Ritz method.
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FIG:2 - Obtain the buckling load of a curved rectangular plate subjected to uniform compressive load N; distributed around the edge of the plate.
- Determine the horizontal and ‘vertical components of the deflection of node 2 of the pin-jointed frame work as shown below. The product AE is constant for all members.
FIG.3 - A constant strain triangular element has corners 1(0,0), 2(4,0) and 3 (2,2) referred to a Cartesian Oxy axes system and is 1 unit thick. Obtain the expressions for displacements ‘u’ and ‘v’.
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Firstranker's choice FirstRanker.comSECTION-C
- Develop stiffness matrix [Kij] for a uniform beam as shown below. The beam has flexural rigidity EI and length L. It is subjected to nodal forces Fy,i, Fy,j and nodal moments Mi, Mj in the xy plane.
FIG.4 - Consider a column of symmetrical I section as shown below. It is subjected to a compressive load P all along its flanges and it undergoes torsional buckling. Obtain the values of critical load and buckling loads due to flexure.
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FIG.5 - A diagonal tension field beam is tapered along its lengths as shown below. Calculate the loads in top and bottom flanges, o and stiffener load P.
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This download link is referred from the post: PTU B.Tech Dec 2018 5th Semester Question Papers || Punjab Technical University
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