Foundations in Structural Nonlinearities using Ansys Mechanical - Simulation Quiz 1 - Ansys Certifications

Foundations in Structural Nonlinearities 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

Why are Large Deflection effects used in this simulation? Select the BEST option.

The model experiences large deformation.

The model utilizes a nonlinear material model.

This analysis shows linear results, so Large Deflection effects are actually not needed to get accurate results

The model has high stresses, which require large deflection effects.

2 / 10

Review the Reaction Force probe and notice that the reaction force history (Force vs Time) is linear. Select the option below that is correct.

The reaction force history is linear because the force on the arm is applied in a linear fashion.

The reaction force history is linear because the material is linear elastic.

The reaction force history shows a linear behavior, so this analysis could also be solved accurately with small deflection theory.

The reaction force history looks linear, but the reaction force is mildly nonlinear with respect to time.

3 / 10

Which component of stress contributes most to the equivalent stress? Select the BEST option.

YZ component (Shear Stress)

XY component (Shear Stress)

X component (Normal Stress)

Y component (Normal Stress)

4 / 10

Consider the locations A through D in the figure below. Where is the location of the maximum XZ shear stress component?

Location D

Location A

Location C

Location B

5 / 10

Add a Maximum Shear Stress result object and review the result. What is the value of the Maximum Shear Stress when half of the load is applied? (Do not run such an analysis.) Select the correct option.

Greater than 4.5 MPa but less than 5.5 MPa

Greater than 5.5 MPa but less than 6.5 MPa

Greater than 7.5 MPa but less than 8.5 MPa

Greater than 6.5 MPa but less than 7.5 MPa

6 / 10

Examine the Total Deformation result. Based on the result history, how would the result compare if your ran with Large Deflection effects turned off? (Do not run such an analysis.) Select the best option below.

Total Deformation with Large Deflection effects turned off will be higher.

Total Deformation with Large Deflection effects turned off will have a very different

Total Deformation with Large Deflection effects turned off will be lower.

Total Deformation with Large Deflection effects turned off will be the same.

7 / 10

Assume that this plastic will crack if the maximum principal stress exceeds 20 MPa. Select the two correct statements.

The location of highest maximum principal stress is at the base

The location of highest maximum principal stress is at the tip of the arm, where the force is applied.

The plastic arm will develop cracks under the applied force.

The plastic arm will not develop cracks under the applied force.

8 / 10

What is the maximum magnitude of deformation in the y-direction under the applied load? Select the BEST option below.

30-40 mm

0-15 mm

40-50 mm

15-30 mm

9 / 10

Carefully review the model and Reaction Force probe results at the Fixed Support. Why is the reaction force in the x-direction at “Base” not equal to 0.75 N (within a tolerance of 0.1%)?

The normal direction of the surface of the arm “Pull” is not exactly parallel to the global x-axis causing the x-direction reaction force not to equal to 0.75 N, but the total reaction force is the same as the applied force.

Finite numerical precision of computers prevents the x-reaction force to equal the applied force.

The material absorbs some energy, so the reaction force does not equal the applied force.

The analysis is nonlinear, so it is expected that the direction of the reaction force changes.

10 / 10

Consider the intermediate result at “Time = 0.1 [s]”. Select the correct statement below.

The result at Time=0.1 seconds is a linear analysis result.

The result at Time=0.1 seconds is not a valid result since force equilibrium has not been satisfied yet.

The result at Time=0.1 seconds is valid only in a transient analysis.

The result at Time=0.1 seconds show the results when 10% of the final load has been applied.

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Private: Foundations in Structural Nonlinearities using Ansys Mechanical

Foundations in Structural Nonlinearities using Ansys Mechanical - Simulation Quiz 1

Large Deflection Analysis of a Sunglass Arm

Total Available Time - 30 mins

Total Number of Questions - 10

Foundations in Structural Nonlinearities using Ansys Mechanical - Simulation Quiz 1