Simulation Quiz 1

Linear Dynamics using Ansys Mechanical - Simulation Quiz 1

Complete the simulation and have all the results ready BEFORE starting the quiz.

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1 / 10

Which of the following items from the base analysis is passed to the modal analysis for this pre-stressed modal solution? Select three correct options.

The material definition

The mesh

The fixed supports

The load F = 30N

2 / 10

What is the maximum total deformation of the bracket in the base analysis? Select the option that is closest to the result you obtained.

13.9 mm

3.8 mm

6.7 mm

28.4 mm

3 / 10

Assume that the bracket undergoes a dynamic load in the Z direction. Which of the modes contributes the most to the deformation of the bracket? Select the best option.

1st mode

5th mode

4th mode

2nd mode

4 / 10

What is the maximum equivalent stress of the bracket in the base analysis? Select the option that is closest to the result you obtained.

120 MPa

200 MPa

5 MPa

12 MPa

5 / 10

Which of the following linked systems is correct for the pre-stressed modal analysis? Choose the best option.

.

.

6 / 10

In this model, which of the following items directly contributes to the effective stiffness of the bracket in the prestressed modal analysis? Select the best option.

The force loading from the base analysis

The stresses from the base analysis

The deformations from the base analysis

The reference temperature from the base analysis

7 / 10

For this model, to have the Ratio of Effective Mass to Total Mass > 0.9 for Y direction, at least how many modes should be extracted? Select the best option that satisfies this criterion.

12

50

6

20

8 / 10

What is maximum total deformation of the bracket in modal analysis? Select the option that is closest to the result you obtained.

Modal analysis only calculates relative deformation instead of actual deformation.

930 mm

390mm

710 mm

9 / 10

Which of the following statements is True about the loading and boundary conditions in the base analysis and in the modal analysis? Choose two correct options.

The load F=30N is applied in the base analysis but not in the modal analysis.

The load F=30N is applied in both the base analysis and the modal analysis.

The fixed boundary condition is applied in both the base analysis and the modal analysis.

The fixed boundary condition is applied in the base analysis but not in the modal analysis.

10 / 10

Which of the following statements is True about equivalent stress of the bracket in the modal analysis? Select the best option.

The maximum equivalent stress in the modal analysis is the summation of the value from the base analysis and the modal analysis for each mode.

Ansys Mechanical cannot calculate equivalent stresses in a modal analysis.

The equivalent stresses calculated in the modal analysis are not actual values. It just shows the distribution of stress for each mode.

The maximum equivalent stress in the modal analysis is roughly 600 MPa.

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Linear Dynamics Using Ansys Mechanical

Total Available Time - 30 mins

Total Number of Questions - 10