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Discontinuity in geometry causes stress concentration in machine components.Which of the following is NOT a method of alleviating stress concentration at the corner of a stepped shaft?

Discontinuity in geometry causes stress concentration in machine components.Which of the following is NOT a method of alleviating stress concentration at the corner of a stepped shaft? Correct Answer <span class="fontstyle0" style="">Providing fastener</span>

Explanation:

Reduction of stress concentration:

Although it is not possible to completely eliminate the effect of stress concentration, there are methods to reduce stress concentration. They are:

Additional notches and holes in tension member:

A single notch results in a high degree of stress concentration. The impact is reduced by three methods:

  • use of multiple notches
  • drilling additional holes
  • removal of undesired material

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Fillet radius, undercutting, and notch for members in bending:

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Drilled additional holes in shaft:

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Addition of washer:

Simple washers are thin annular-shaped metallic disks. Its functions are as follows:

  • Distributes the load over a large area on the surface of clamped parts.
  • It provides bearing surfaces over large clearance holes.

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