question-2

31.Define stiffness matrix.
32.Explain stiffness matrix and its special features.
33.determine the stiffness matrix for
(a)bar element
(b)truss element
(c)Beam element neglecting axial deformation.
34.Briefly explain the various attempts made to reduce memory requirement in storing stiffness matrix.
35.State the purpose of co-ordinate transformation matrix?
36.Mention the classification of elements based on the shapes?
37.Explain the terms:
(a)CST
(b)LST
(c)QST
38.Explain the term Continuity.
39.Explain the following terms: Nodes, Primary nodes, Secondary nodes and Internal nods.
40.Distinguish between higher order elements and lower order elements.
41.Draw a tri-nodded quadratic element.
42.Draw at least two Lagrange family rectangular elements.
43.Draw at least two Serendipity family rectangular elements.
44.Explain the LaGrange family of elements.
45.Explain the Serendipity family of elements.
46.Distinguish between LaGrange and Serendipity family of elements.
47.Draw the Pascal’s triangle for selection of interpolation polynomials.
48.Select a suitable polynomial with nine terms.
49.Define: Interpolation Function.
50.Classify the elements based on order of interpolation polynomials.
51.What are the polynomials preferred as the interpolation function.
52.Distinguish between Complex and Multiplex elements.
53.Mention the behavior of elements used for stress analysis.
54.Define: aspect ratio of an element.
55.State the significance of element distortion.
56.More element distortion is permitted in higher order element then the lower order element. Comment on the statement.
57.What is the ideal aspect ratio value for plane elements?
58.Mention the different methods of quantifying the element distortion.
59.Write short notes on: (a) selection of elements. (b) Element size and numbering.
60.Define: shape function.
61.State the requirement for a shape function.
62.what are the properties of shape functions
63.State and explain the convergence requirement of polynomial shape function.
64.Why are the polynomials preferred for shape function in FEM.?
65.What is axis symmetric element?