This set of Finite Element Method Multiple Choice Questions & Answers (MCQs) focuses on “Three Dimensional Problem Modelling & Frontal Method”.
1. What is considered as the first step in solving a finite element problem?
a) Generating a coarse model
b) Generating a finite element model
c) Generating graphs
d) Generating loads
View Answer
Explanation: Generating a coarse model is considered as the first step in solving a finite element problem. A coarse model is considered as the simplified model of the given structure/problem. It helps us to identify all the parameters with ease.
2. Which of the following is not required for 3D modeling in a finite element method?
a) Nodal coordinates
b) Material properties
c) Nodal loads
d) User information
View Answer
Explanation: User information is not required for 3D modeling in a finite element method. Nodal coordinates, material properties and nodal loads are some of the pre requisites required to carry out 3D modeling in any finite element software. Other pre requisites include element nodal connectivity, constraint conditions etc.
3. 3D models cannot be imported from other CAD softwares.
a) True
b) False
View Answer
Explanation: The given statement is false. 3D Models can be imported from other CAD softwares. Over the years, owing to various technological improvements; finite element softwares have become more user friendly and accommodating. Finite element softwares also have the provision of modeling the 3D model if required.
4. Which of the following is not a 3D modeling software?
a) Catia
b) SolidEdge
c) Abacus
d) Creo
View Answer
Explanation: Abacus is not a 3D modeling software. It is a finite element software package that also holds provision for 3D Modeling. Whereas, Catia, SolidEdge, and Creo are explicitly used for 3D Modeling purposes with minimal or no scope for finite element modeling.
5. Which method is a better alternative to the banded method of handling?
a) Frontal method
b) Galerkin method
c) Rayleigh’s method
d) Euler’s method
View Answer
Explanation: An alternative method that is better than the banded method of handling is the frontal method. It has various advantages over its counterpart. Some of them include – lesser memory space, less computation time etc.
6. In frontal method, order of element numbering has more importance.
a) False
b) True
View Answer
Explanation: In conventional methods of handling stiffness matrices (Banded method), the order of node numbering is of higher importance. In the case of Frontal method, the importance is given to order of element numbering.
7. What is the principle behind frontal method of handling?
a) Values of degree of freedom are inconsistent
b) Values of degree of freedom cannot be eliminated
c) Values of degree of freedom can be eliminated
d) Values of degree of freedom are constant
View Answer
Explanation: Frontal method of handling is based on the principle that, the degrees of freedom can be eliminated as soon as the stiffness values in that row and column for that particular degree of freedom are complete.
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