AE1007 Finite Element Method B.E Question Bank : sriengg.com
Name of the College : Srinivasan Engineering College
University : Anna University
Subject Code/Name : AE1007–Finite Element Method
Dept : Aeronautical Engineering
Degree : B.E
Year/SEM: IV/VII
Website : sriengg.com
Document Type : Question Bank
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/sriengg.com/3307-FEM-2MARKS.pdf
Finite Element Method Questions Bank
PART A QUESTIONS WITH ANSWERS :
Unit I
1. What is meant by finite element?
Related / Similar Question Paper :
Srinivasan College B.E Rocket & Missiles Question Bank
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 are 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 should be close to unity as possible.
18. What is truss element?
The truss elements are the part of a truss structure linked together by point joint which transmits only axial force to the element.
19. What are the h and p versions of finite element method?
It is used to improve the accuracy of the finite element method. In h version, the order of polynomial approximation for all elements is kept constant and the numbers of elements are increased. In p version, the numbers of elements are maintained constant and the order of polynomial approximation of element is increased.
20. Name the weighted residual method
** Point collocation method
** Sub domain collocation method
** Least squares method
** Galerkins method.
Unit II
21. List the two advantages of post processing.
Required result can be obtained in graphical form. Contour diagrams can be used to understand the solution easily and quickly.
22. During discretization, mention the places where it is necessary to place a node?
** Concentrated load acting point
** Cross-section changing point
** Different material interjections
** Sudden change in point load
23. What is the difference between static and dynamic analysis?
Static analysis : The solution of the problem does not vary with time is known as static analysis Example: stress analysis on a beam
Dynamic analysis : The solution of the problem varies with time is known as dynamic analysis Example: vibration analysis problem.
24. Name any four FEA softwares.
ANSYS
NASTRAN
COSMOS
25. Differentiate between global and local axes.
Local axes are established in an element. Since it is in the element level, they change with the change in orientation of the element. The direction differs from element to element. Global axes are defined for the entire system. They are same in direction for all the elements even though the elements are differently oriented.