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

### Large Deflection Analysis of a Sunglass Arm

An arm of a pair of plastic sunglasses is quite flexible and will be the area of interest for the present problem. The surface, where the arm is attached to the frame hinge, will be fixed. A force is applied to the end of the frame in a direction normal to the surface. Perform a static structural large deflection analysis to determine the amount of moment experienced at the hinge when the arm is pulled too far.

Follow the instructions to set up the simulation and get results BEFORE starting the quiz. Download the instructions and necessary simulation files from here.

Note: The Expected Completion Time for this quiz is 15 mins, but the Maximum Available Time to complete it is 30 mins.

Times up!

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

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

Once you have finished the exam, click on the 'Mark Complete' button to save your progress and move to the next section.

1 / 10

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

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.

3 / 10

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

4 / 10

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

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.

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.

7 / 10

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

8 / 10

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

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%)?

10 / 10

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