Foundations in Linear Dynamics using Ansys Mechanical - Simulation Quiz 2 - Ansys Certifications

Foundations in Linear Dynamics using Ansys Mechanical - Simulation Quiz 2

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1 / 10

The model has a Force applied on the free end with 100 N acting in each of the X, Y, and Z directions. Select the option below that is a correct statement.

The force in the X-direction dominates the overall response.

The force in the Z-direction dominates the overall response.

The force in the Y-direction dominates the overall response.

The forces in X, Y, and Z are all equally important in the overall response.

2 / 10

What is the maximum deformation seen during the transient analysis? Select the closest option.

~ 0.2mm

~ 0.04mm

~ 0.05mm

~ 0.1mm

3 / 10

Without solving the model, what will the maximum directional deformation in the Y-direction be if the applied force in the Y-direction is -200 N? Assume that forces in the X- and Z-directions remain unchanged. Select the best option.

The maximum directional deformation in the Y-direction will be 1.4 times the deformation in the current case.

The answer cannot be obtained without solving the numerical model with -200 N applied in the Y-direction.

The maximum directional deformation in the Y-direction will be 4 times the deformation in the current case.

The maximum directional deformation in the Y-direction will be 2 times the deformation in the current case.

4 / 10

Without modifying and solving the model again, consider changing the material to one with twice the current mass density (geometry, loads, and all other material properties remain unchanged). Select the best option that describes what happens with this new density to the Total Deformation response.

The period of the oscillations will stay the same, but the amplitude will increase.

The period of the oscillations will increase.

The period of the oscillations will decrease.

No changes in deformation response.

5 / 10

Without modifying and solving the model again, consider an increase in the plate thickness. Select the best option that describes what happens to the Total Deformation response.

The period of the oscillations will decrease.

The period of the oscillations will increase.

The period of the oscillations will stay the same, but the amplitude will decrease.

No changes in deformation response.

6 / 10

The analysis used a damping ratio of 1%. If the damping ratio were increased to 5%, select the best option that describes the Total Deformation response.

The amplitude will decrease more quickly.

The amplitude will not be affected by any change in the damping ratio.

The amplitude will decrease more gradually.

The amplitude will increase slightly.

7 / 10

Looking at the plot of maximum Total Deformation, which one of the following statements is correct?

The magnitude of deformation increases with time.

The deformation increases due to a reduction in the structure’s stiffness.

The deformation decreases due to an increase in the structure’s stiffness.

The magnitude of deformation reduces over time due to damping.

8 / 10

If both ends of the cantilever are fixed, and the force is applied at the center, which one of the following statements is correct?

Apply two forces one at the edge of the cantilever and one at the center but in opposite directions.

Insert frictionless support in the Transient analysis, this will be like modeling a symmetric boundary.

Insert fixed support in the Transient analysis setup.

The model needs to be setup again from the modal analysis.

9 / 10

Before performing the Mode Superposition Analysis, which of the following is always useful to perform? Select the best, most practical option.

Create a very fine mesh to obtain conservative results.

Extract only 6 modes to see if the system’s response can be captured with a small number of modes.

Extracting a very large number of modes to ensure that the structure’s dynamic response is adequately captured.

Checking ratio of effective mass to total mass from the modal analysis to see if enough modes have been extracted.

10 / 10

When determining the transient results using the mode-superposition method, which modes are used by the solver in its calculations? Select the best option.

All the modes extracted in the modal analysis are used by the solver.

Only modes that have mode shapes in direction of deformation are considered.

Only six modes, corresponding to each degree of freedom, are used by the solver.

The modes with maximum deformation in each X, Y, and Z direction are used.

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Private: Foundations in Linear Dynamics using Ansys Mechanical

Foundations in Linear Dynamics using Ansys Mechanical - Simulation Quiz 2

Mode-Superposition Analysis of a Cantilever Beam

Total Available Time - 30 mins

Total Number of Questions - 10

Foundations in Linear Dynamics using Ansys Mechanical - Simulation Quiz 2