Mechanical Engineering Quiz # 39

The characteristic of the shape function is

The shape function has a unit value at one nodal point and zero value at the other nodes

The sum of the shape function is equal to one

Both a & b

None of the above

The points in the entire structure are defined using the coordinates system is known as

Local coordinates system

Natural coordinates system

Global coordinate system

None of the above

The applications of the Finite Element Method in two-dimensional analyses are .

Stretching of plates

Gravity of dams

Axisymmetric shells

All of the above

If the body is in a state of equilibrium then the energy is minimum. This statement is considered in .

Inverse matrix method

Weighted residual method

Galerkin’s principle

The minimum potential energy principle

Which of the following is true for the stiffness matrix (K)?

K is a banded matrix

K is unsymmetric

K is an un-banded matrix

None of the above

The actual thickness of the plane strain element is .

Very large

Very small

Assumed by software

Any of the above

Which of the following is not an FEA package?

ANSYS

Nastran

Abaqus

AutoCAD

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

Static analysis

Thermal analysis

Modal analysis

All of the above

For thermal analysis, the field variable is

Stress

Strain

Displacement

Temperature

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

Stress distribution

Heat flux distribution

Pressure distribution

All of the abov

Crack propagation problems come under this category.

Steady-state problems

Eigenvalue problems

Transient problems

Any of the above

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

Zero

Very small

Very large

Infinite

How many nodes are there in a tetrahedron element?

3

4

5

6

How many nodes are there in a hexahedron element?

4

6

8

10

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

6

8

10

12

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

More

Less

Depends on other factors

Can't say

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

R=KQ+F

R=KQ-F

R=K+QF

R=K-QF

Stiffness matrix is a

Symmetric matrix.

Skew symmetric matrix.

Adjoining matrix.

Augmented matrix.

The local x-axis of a member is always parallel to the ____ of the member.

Longitudinal axis.

Vertical axis.

Transverse axis.

Horizontal axis.

The symmetry of stiffness matrix proves

Castigliano’s theorem.

Maxwell reciprocal theorem.

Betti’s law.

Hardy cross theorem.

Size of the stiffness matrix _____ if the number of force components increases.

Increase.

Decrease.

Remain unchanged.

Proportionally increases.

To describe material non-linearity, __ should be non-linear.

Constitutive relationship.

Strain-displacement relationship.

Shape function.

Element type.

FEA is a/ an

Analytical technique.

Computational technique.

Differential technique.

None of these.

For a state of stable equilibrium, the potential energy should be

Maximum.

Minimum.

Zero.

Cannot be specified.

The field variables are the

Independent variable.

Neither dependent or independent variable.

Dependent variables.

None of these.

Which of the following two disciplines are tied by a common database?

CAD and CAM

Drafting and documentation

Documentation and geometric modeling

None of the mentione

Which of the following software is used to provide the users with various functions to perform geometric modeling and construction?

Graphics software

Programming software

Operating software

Application softwar

What is the relationship between CAD/CAM?

Manufacturing and marketing

Science and engineering

Design and marketing

Design and manufacturin

Which of the following device is mostly associated with automation?

NC machine

Flexible manufacturing

Computer graphics workstation

Robots

Which of the following software performs the data entry, design, analysis, drafting, and manufacturing functions?

Graphics software

Programming software

Operating software

Application softwar