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Questions and Answers
Which of the following statements is true about stress concentration?
Which of the following statements is true about stress concentration?
- Stress concentration can only occur in materials with holes or notches
- Stress concentration occurs when the flow lines move farther apart to accommodate changes in the material geometry
- Stress concentration is not accounted for by stress concentration factors
- Stress concentration is caused by a sudden packing together of the flow lines around a discontinuity in the material (correct)
What is a stress riser?
What is a stress riser?
- A factor used to scale down the stress concentration in the vicinity of a discontinuity
- A feature in the material that causes the stress to spike up in the vicinity of it (correct)
- A feature in the material that causes the stress to flow smoothly through it
- A factor used to calculate the nominal stress in the area of a discontinuity
How is the actual stress in the vicinity of a discontinuity calculated?
How is the actual stress in the vicinity of a discontinuity calculated?
- By adding the nominal stress in that area to the stress concentration factor
- By scaling down the nominal stress in that area
- By scaling up the nominal stress in that area by the appropriate stress concentration factor (correct)
- By dividing the nominal stress in that area by the appropriate stress concentration factor
