ME6302 Finite Element Analysis
Fourth year, Department of Mechanical Sandwich Engineering
First and second Units Questions.

Answer ALL questions
PART A – (10×2=20 marks)
1. What is meant by finite element analysis?
2.What is meant by node or joint
3.Explain the force method and stiffness method?
4. What are the type loading acting on the structure?
5. State the properties of a stiffness matrix?
6. Write general finite element equation.
7. Write down the expression of stiffness matrix for a truss element ?
8. Define plane stress analysis?
9. Write a displacement function equation for CST element.
10. Write a strain displacement matrix for CST element.
PART B – (5x16=80 marks)
11. Consider a taper steel plate of uniform thickness t=25mm as show in fif. The young’s modulus of the plates, E=2*105N/mm2 and weight density, ρ=0.82*10-4. In addition to its self weight the plate is subjected to a point load p=100N at its mid point. Calculate the following by modeling the plate with two finite element;
            (i) Global force vector{F}                                          (ii) Global stiffness matrix
            (iii)Displacement in each element                               (iv) Stresses in each element
            (v) Reaction force at the support.    
  150mm
                                                                                                     300mm
                                                600mm                        pP       
                                                                             PP
                                                                        75mm


12. Enumerate the various casting defect and suggest sutable remedies.
13. (a) What are the pattern allowances? Explain briefly each
      (b) Discuss the properties of moulding sand.
14. Explain the manual arc welding process with a neat sketch .
15. (a) Explain Spot welding with neat sketch.
      (b) Explain butt welding with neat sketch.