FINITE ELEMENT METHOD
PART A QUESTIONS WITH ANSWERS
UNIT 1
1. What is meant by finite element?
A small units having definite shape of geometry and nodes is called finite element.
2. What is meant by node or joint?
Each kind of finite element has a specific structural shape and is in...
UNIT 1
1. What is meant by finite element?
A small units having definite shape of geometry and nodes is called finite element.
2. What is meant by node or joint?
Each kind of finite element has a specific structural shape and is inter- connected with
the adjacent element by nodal point or nodes. At the nodes, degrees of freedom a
located. The forces will act only at nodes at any others place in the element.
3. What is the basic of finite element method?
Discretization is the basis of finite element method. The art of subdividing a structure
in to convenient number of smaller components is known as discretization.
4. What are the types of boundary conditions?
Primary boundary conditions
Secondary boundary conditions
5. State the methods of engineering analysis?
Experimental methods
Analytical methods
Numerical methods or approximate methods
6. What are the types of element?
7. 1D element
2D element
3D element
8. State the three phases of finite element method.
Preprocessing
Analysis
Post Processing
9. What is structural problem?
Displacement at each nodal point is obtained. By these displacements solution
stress and strain in each element can be calculated.
, 10. What is non structural problem?
Temperature or fluid pressure at each nodal point is obtained. By using these
values properties such as heat flow fluid flow for each element can be calculated.
10. What are the methods are generally associated with the finite element analysis?
Force method
Displacement or stiffness method.
11. Explain stiffness method.
Displacement or stiffness method, displacement of the nodes is considered as the
unknown of the problem. Among them two approaches, displacement method is
desirable.
12. What is meant by post processing?
Analysis and evaluation of the solution result is referred to as post processing.
Postprocessor computer program help the user to interpret the result by displaying
them in graphical form.
13. Name the variation methods.
Ritz method.
Ray-Leigh Ritz method.
14. What is meant by degrees of freedom?
When the force or reaction act at nodal point node is subjected to deformation. The
deformation includes displacement rotation, and or strains. These are collectively
known as degrees of freedom
15. What is meant by discretization and assemblage?
The art of subdividing a structure in to convenient number of smaller components
is known as discretization. These smaller components are then put together. The
process of uniting the various elements together is called assemblage.
16. What is Rayleigh-Ritz method?
It is integral approach method which is useful for solving complex structural
problem, encountered in finite element analysis. This method is possible only if a
suitable function is available.
17. What is Aspect ratio?
It is defined as the ratio of the largest dimension of the element to the smallest
dimension. In many cases, as the aspect ratio increases the in accuracy of the
solution increases. The conclusion of many researches is that the aspect ratio
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