Simulation Quiz 1

Understanding the Physics of Structural Mechanics - Simulation Quiz 1

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1 / 15

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

Static Structural takes longer, but is more accurate

Material input is nonlinear

Inertia effects are negligible

Material input is rate dependent

2 / 15

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

Joint between slanted and horizontal member

Center of the horizontal member

Fixed support

Center of the slanted member

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.)

10

0.01

1

0.1

4 / 15

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

Density has no influence

Density will influence the stress

Density will influence the strain

Density will influence the rate of loading

5 / 15

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

The Total Deformation of System B (Steel) is less than that of System A (Aluminum) due to the difference in Poisson’s ratio.

The ratio of the Total Deformation of System B (Steel) to System A (Aluminum) is the same ratio as the density of Aluminum to Steel.

The Total Deformation of System B (Steel) is less than that of System A (Aluminum) because of changes in the load path due to the use of different materials.

The ratio of the Total Deformation of System B (Steel) to System A (Aluminum) is the same ratio as the Young's Modulus of Aluminum to Steel.

6 / 15

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

Flexible body is more efficient than rigid body

Flexible body provides stress and strain results

Flexible body provides inertia effects.

Flexible body provides force reaction results

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.

-10 N

10 N

0 N

1 N

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.

symmetric between the left and right sides of the hanger

10% larger on the left side than the right side of the hanger

5% larger on the right side than the left side of the hanger

5% larger on the left side than the right side of the hanger

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.

Significant normal strain in z-direction is present

Significant tensile strains are present

Significant compressive strains are present

Significant shear strain in the yz-direction is present

10 / 15

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

Normal Elastic Strain in Z-direction

Shear Elastic Strain XZ

Shear Elastic Strain YZ

Normal Elastic Strain in Y-direction

11 / 15

Select TWO effects of turning Large Deflection ON for this analysis

Metal Plasticity is included

Stress stiffening effects are included

Large deformation effects are included

Spin Softening effects are reduced

12 / 15

Choose the BEST reason for turning Large Deflection ON

Enhanced convergence

Enhanced solver time

Expanded results set

Enhanced result accuracy

13 / 15

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

the center of the horizontal member

the center of the slanting member

the fixed support

at the joint between slanting and horizontal member

14 / 15

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

65000 MPa

81000 MPa

75000 MPa

71000 MPa

15 / 15

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

the fixed support

the center of the horizontal member

the center of the slant member

the joint between slanting and horizontal member

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Physics of Structural Mechanics

Clothes Hanger Analysis

Total Available Time - 45 mins

Total Number of Questions - 15