This set of Finite Element Method Multiple Choice Questions & Answers (MCQs) focuses on “Commercial Packages”.

1. Which of the following is not required to perform Finite Element Analysis in respective softwares?

a) Meshing Tools

b) Material properties

c) Loads and Constraints

d) User information

View Answer

Explanation: User information is not a pre requisite to perform Finite Element Analysis. Meshing Tools, Material properties, Loads and Constraints are an integral part of Finite Element Analysis, without which progress cannot be made.

2. Thermal Analysis cannot be performed using a Finite Element Analysis software.

a) True

b) False

View Answer

Explanation: Thermal Analysis can be performed using an Finite Element Analysis software. This analysis helps in the design of an engineering product based on temperature dependant properties and their behavior.

3. Software packages developed exclusively to assist generation of finite element analysis input are referred to as Post processors.

a) False

b) True

View Answer

Explanation: Software packages developed exclusively to assist generation of finite element analysis input are referred to as Pre processors, whereas Software packages developed exclusively to assist generation of finite element analysis output are referred to as Post processors.

4. Which of the following is not a pre processing software?

a) Patran

b) Hypermesh

c) Solidworks

d) Ansys

View Answer

Explanation: Patran, Hypermesh are commercially available pre processing softwares. Ansys is a complete package of finite element analysis with pre and post processing capabilities. Solidworks is a CAD software that is extensively used for design and modeling.

5. Which of the following is not a form of up-gradation with respect to finite element analysis packages?

a) Addition of non linear analysis

b) Increasing time taken for calculations

c) Increment in type of optimizations

d) Increase variety of elements

View Answer

Explanation: Finite Element Analysis packages undergo continuous up-gradations to become more user friendly. Increasing the variety of elements, type of optimizations, and addition of different types of analysis are constructive up-gradations, whereas increasing the time taken for calculations is undesirable and non user friendly.

6. What is the first step followed in the procedure of Solving?

a) Initializing global stiffness and load matrix

b) Assembling Element stiffness matrix

c) Numerical Integration

d) Assembling Jacobian Matrix

View Answer

Explanation: Every solving procedure starts with initializing global stiffness and load matrices. This is followed by entering the element loop to assemble the element stiffness matrix. Once the element stiffness matrix is initialized, numerical integration is used to find out shape functions and their derivatives.

7. Why do pre processors use Graphical User Interfaces?

a) To automate calculations

b) To enhance productivity

c) To beautify the interface

d) To generate finite element mesh

View Answer

Explanation: Graphical user interfaces are used for a variety of reasons. They are used to generate finite element mesh, number elements automatically, generating nodal coordinates, developing nodal connectivity details, display details in the form of tables etc.

8. Why is the cost of finite element packages declining?

a) Decrease in the number of users

b) Complexity of the packages

c) Unavailability of many such packages

d) Increase in the number of users

View Answer

Explanation: Even though finite element packages started out with high initial costs; owing to the increase in the number of users, and the variety of packages available in the market; their costs have been declining for the past few years.

9. Which of the following is not a post processing software?

a) Nastran

b) Hyperworks

c) Catia

d) Ansys workbench

View Answer

Explanation: Nastran, Hyperworks are commercially available post processing softwares. Ansys workbench is a complete package of finite element analysis with pre and post processing capabilities. Catia is a CAD software that is extensively used for design and modeling.

10. Which of the following is performed in a post processing software?

a) Meshing

b) Plotting graphs

c) Application of loads

d) Constraint generation

View Answer

Explanation: Meshing, Load application, Constraint generation are all performed in the pre processing stage of a finite element analysis. Therefore, these tasks are carried out using the pre processing softwares. Result generation, Graph plotting etc are performed in the post processing stage of finite element analysis using respective post processing softwares.

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