Simulation Quiz 3

Methods of Solving Problems in Structural Mechanics - Simulation Quiz 3

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

What is the maximum equivalent elastic strain in the elastomeric sample at the end of the simulation? Select the option that is closest to the correct answer.

1.1 mm/mm

0.7 mm/mm

2.0 mm/mm

0.04 mm/mm

2 / 15

Consider the case where the "Structural Steel” linear elastic material has a Young’s modulus that is twice its current value, and everything else remains the same. (Do not set up and solve such a simulation.) Review all options below and select the best option that is correct.

The reported reaction force in the Y-direction will be zero since the indenter will fail to push the elastomeric material 2 mm.

The reported reaction force in the Y-direction will be roughly half as much.

The reported reaction force in the Y-direction will be roughly twice as much.

The reported reaction force in the Y-direction will remain the same because the elastomer’s stiffness – not the Steel’s stiffness – is being measured in this simulation.

3 / 15

The material incompressibility parameter of the “Elastomer Sample” hyperelastic material is 0 $MPa^{-1}$. What does this signify? Review all options and select the best answer.

The material is rigid.

The material is incompressible.

The material is compressible.

The material can undergo significant volume change.

4 / 15

What is the initial shear modulus of the “Elastomer Sample” hyperelastic material? Select the option that is closest to the correct answer. (Hint: review information in Engineering Data.)

2e5 MPa

1 MPa

0 MPa

1.5 MPa

5 / 15

In Engineering Data, compare the “Structural Steel” and “Elastomer Sample (Reference)” material properties. How many times larger is the shear modulus of Steel compared with the initial shear modulus of the elastomer sample? Select the option that is closest to the correct answer.

167,000 times larger

77,000 times larger

200,000 times larger

300,000 times larger

6 / 15

Review the reaction force at the end of the simulation. What is the magnitude of force in the Y-direction that is required to push the steel indenter 2 mm into the elastomeric sample? Select the option that is closest to the correct answer.

0 N

13 N

20 N

33 N

7 / 15

Consider the situation where the "Indenter” is pushed into the elastomer 4 mm (instead of 2 mm) while everything else remains the same. (Do not set up and solve such a simulation.) How much force in the Y-direction is required to push the Indenter 4 mm into the Elastomeric Sample? Review all options below and select the best option that is a correct statement.

The reaction force will be 2 times larger since it is a linear analysis.

The reaction force can be determined accurately by linearly extrapolating the last data point.

The reaction force will be 2 times larger since the indenter is made from a linear elastic material.

It is not possible to determine the numerically accurate answer without solving the new simulation.

8 / 15

What is the maximum equivalent stress in the elastomeric sample at the end of the simulation? Select the option that is closest to the correct answer.

0.3 MPa

0 MPa

2.8 MPa

1.3 MPa

9 / 15

Intermediate results are available in this simulation. If you review results at “Display Time: 0.6 s”, what does this represent? Review all options below and select the best option that is correct.

Results associated with a movement of 1.2 mm of the indenter

Results associated with holding the indenter for 0.6 seconds on the elastomeric sample

Results after 0.6 seconds have elapsed after the indenter impacts the elastomeric sample

Results associated with 60% of the reported reaction force

10 / 15

Consider the situation where the "Indenter” is pushed into the elastomer 0.8 mm (instead of 2 mm) while everything else remains the same. (Do not set up and solve such a simulation.) What is the maximum equivalent stress in the Elastomeric Sample when the Indenter is pushed 0.8 mm? Review all options below and select the best option that is closest to the correct answer.

It is not possible to determine the numerically accurate answer without solving the new simulation.

2.10 MPa

1.15 MPa

0.30 MPa

11 / 15

In Engineering Data, review the test data used for curve-fitting of the “Elastomer Sample”. Then, review all options and select 2 correct statements below:

There is no volumetric test data available.

The biaxial test data shows a stiffer response than the shear test data.

The uniaxial test data shows a stiffer response than the shear test data.

The shear test data shows a stiffer response than the biaxial test data.

12 / 15

What is the reaction force in the X-direction for the Displacement support along the centerline? The centerline (the center edge that is constrained with a Displacement Support in the X-direction) is highlighted in the figure below:

Select the option that is closest to the correct answer.

5 N

7 N

0 N

2 N

13 / 15

As the indenter is pushed into the elastomer, some of the elastomer material is pushed out radially. What is the maximum deformation in the X-direction at the end of the simulation? Select the option that is closest to the correct answer.

4e-3 mm

4.00 mm

0.40 mm

0.04 mm

14 / 15

Consider the case where the "Elastomer Sample” hyperelastic material has an initial shear modulus that is twice its current value, and everything else remains the same. (Do not set up and solve such a simulation.) Review all options below and select the best option that is correct.

The reported reaction force in the Y-direction will be roughly half as much.

The reported reaction force in the Y-direction will be zero since the Indenter will fail to push the new elastomeric material 2 mm.

The reported reaction force in the Y-direction will be roughly twice as much.

The reported reaction force in the Y-direction will remain the same because the reaction force is not related to the elastomer’s stiffness.

15 / 15

Consider the situation where the "Indenter” is pushed into the elastomer 0.4 mm (instead of 2 mm) while everything else remains the same. (Do not set up and solve such a simulation.) How much force in the Y-direction is required to push the Indenter 0.4 mm into the Elastomeric Sample? Review all options below and select the best option that is closest to the correct answer.

It is not possible to determine the numerically accurate answer without solving the new simulation.

4.0 N

2.5 N

1.5 N

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Methods of Solving Problems

Hyperelastic Indentation Analysis

Total Available Time - 45 mins

Total Number of Questions - 15