Question 1

Which of the following module of FEA is used to determine natural frequency?
A)Static analysis
B)Thermal analysis
C)Modal analysis
D)All of the above

Accepted Answer

Modal analysis is specifically used in Finite Element Analysis (FEA) to determine the natural frequencies and mode shapes of a structure or a machine component.

Question 2

For thermal analysis, the field variable is
A)stress
B)strain
C)displacement
D)Temperature

Accepted Answer

Temperature is the field variable in thermal analysis because it is the primary quantity of interest in this type of analysis.

Question 3

In FEA of a fluid mechanics problem, we need to find .
A)stress distribution
B)heat flux distribution
C)pressure distribution
D)all of the above

Accepted Answer

In FEA (Finite Element Analysis) of a fluid mechanics problem, the primary focus is on finding the pressure distribution within the fluid. Stress distribution is more relevant to solid mechanics problems, and heat flux distribution is specific to thermal analysis.

Question 4

Crack propagation problems come under category.
A)steady-state problems
B)eigenvalue problems
C)transient problems
D)any of the above

Accepted Answer

Crack propagation problems are considered transient problems because they involve changes over time, such as the growth or movement of a crack in a material. These are not steady-state or eigenvalue problems as they do not pertain to systems in equilibrium or involve finding eigenvalues and eigenvectors.

Question 5

In penalty approach, rigid support is considered as a spring having stiffness.
A)zero
B)very small
C)very large
D)infinite

Accepted Answer

The answer of In penalty approach, rigid support is considered...

Question 6

How many nodes are there in a tetrahedron element?
A)3
B)4
C)5
D)6

Accepted Answer

A tetrahedron element has 4 vertices, and each vertex is considered a node, making a total of 4 nodes.

Question 7

How many nodes are there in a hexahedron element?
A)4
B)6
C)8
D)10

Accepted Answer

A hexahedron element, commonly known as a cube or a block in three-dimensional space, has 8 vertices or nodes.

Question 8

How many nodes are there in a tetrahedron with curved sides element?
A)6
B)8
C)10
D)12

Accepted Answer

A tetrahedron with curved sides, often used in finite element analysis, typically has 10 nodes. This includes the 4 corner nodes of the tetrahedron and an additional 6 nodes placed along the edges to allow for curvature.

Question 9

If the size of the elements is small, the final solution is expected to be accurate.
A)more
B)less
C)depends on other factors
D)can't say

Accepted Answer

The answer of If the size of the elements is...

Question 10

In truss analysis, the reactions can be found by using the equation .
A)R=KQ+F
B)R=KQ-F
C)R=K+QF
D)R=K-QF

Accepted Answer

The answer of In truss analysis, the reactions can be...

Quiz 3: Finite Element Analysis (FEA)

Which of the following module of FEA is used to determine natural frequency?

For thermal analysis, the field variable is

In FEA of a fluid mechanics problem, we need to find .

Crack propagation problems come under category.

In penalty approach, rigid support is considered as a spring having stiffness.

How many nodes are there in a tetrahedron element?

How many nodes are there in a hexahedron element?

How many nodes are there in a tetrahedron with curved sides element?

If the size of the elements is small, the final solution is expected to be accurate.

In truss analysis, the reactions can be found by using the equation .