# Simulation Quiz 1

### Clothes Hanger Analysis

A clothes hanger is a hanging object which is in the shape of a human shoulder. A clothes hanger helps to avoid wrinkles in clothes, and clothes can be easily hanged or removed from the hanger. When clothes or even a heavy cloth is hanged on a clothes hanger, we usually see the hanger deform. In this problem, we will see how the clothes hanger made of different materials will deform under a light and heavy load.

Follow 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 20 mins but, the Maximum Available Time to complete the quiz is 45 mins.

#### Total Number of Questions - 15

Times up!

Understanding the Physics of Structural Mechanics - 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 / 15

Choose the BEST reason for analyzing the hanger with a Static Structural System instead of Full Transient System.

2 / 15

For System B (Structural Steel), the largest deformation in the x-direction occurs in which location?

3 / 15

Consider a separate case where the aluminum hanger is suspended under standard earth gravity using only a steel spring of length 10mm and stiffness 0.28N/mm, without any applied Force or Fixed Support.  (Do not setup or solve such a simulation.)  What will be the strain generated in the spring?  Select the option that is closest to the answer.  (Hint: the mass of the hanger can be found in the Details view of the “Geometry” branch.)

4 / 15

Choose the BEST explanation for the influence of material density in the static analysis of the hanger.

5 / 15

Compare the results between System A (Aluminum) and System B (Steel).  Which of the following statements is correct?  Select the BEST option.

6 / 15

Choose the BEST reason for analyzing the hanger as a flexible body instead of a rigid body.

7 / 15

What is the force reaction in the x-direction at the Fixed Support in System A (Aluminum)?  Pick the option that is closest to the answer.

8 / 15

Consider the triangular portion of the clothes hanger, with positive x-direction being the “right” side and negative x-direction being the “left” side.  For System B (Structural Steel), the Total Deformation is _____.  Select the BEST answer.

9 / 15

For System B (Steel), which of the following statements is correct concerning the center of the horizontal member of the clothes hanger?  Select 2 best options.  Note that the use of the term “significant” is relative to the magnitude of total equivalent strain in the model.

10 / 15

Of the six strain tensor components, which has the largest magnitude for System A (Aluminum)?

11 / 15

Select TWO effects of turning Large Deflection ON for this analysis

12 / 15

Choose the BEST reason for turning Large Deflection ON

13 / 15

For System A (Aluminum), Maximum Principal Elastic Strain is seen at which of the following locations?

14 / 15

What will be the ratio of equivalent stress and equivalent strain at the following point in Aluminum Hanger?

15 / 15

The maximum equivalent elastic strain is located at _____  for System A (Aluminum)?