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F1085 Pages: 3

Explain about Boundary Representation solid modelling technique.
Illustrate the sweep representation modelling citing an example.
PART C

Answer any four full questions, each carries 10 marks.
List and describe steps involved in FEA

Derive the interpolation function for constant strain triangular element

A tapered bar of length 600mm is having cross sectional areas of 650 mm?
and 350mm? at two ends. The bar is fixed at the end having larger area and
subjected to axial forces 40kN which is acting axially outwards at the smaller
end and 101, acting at ೩ point 200mm from smaller end and directing
axially towards the larger side. The Modulus of Elasticity of the bar is

200*103 N/mm. Model the bar with three finite elements and Determine

1. The nodal displacements.
ரர்‌ The stresses in each element.
111. The reaction force at the support.

What is meant by Dynamic analysis.
Determine the shape functions Ni, N2 and N3 at the interior point P for the

triangular element as shown in the figure.

x

Derive the stiffness matrix for CST ( 2D ) element
Explain the following terms briefly

(i) Discretization process

(ii) Global Stiffness Matrix

(111) Quad4 element

Differentiate between a Rod element and Bar element.

Page 2 of 3

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