Shearing when bolts are arranged radially

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SUMMARY

The discussion centers on calculating bolt shearing in the context of designing a plunger pump, specifically focusing on the input flange. The formula T=τAnr is highlighted, where T represents torque, τ is shear stress, A is the cross-sectional area of bolts, n is the number of bolts, and r is the radius of bolt placement. Cameron Shigley's "Mechanical Engineering Design" is recommended as a key reference for further understanding of bolt shearing calculations and design principles. Emphasizing the importance of proper references, the discussion underscores the academic requirement for thorough documentation in engineering projects.

PREREQUISITES
  • Understanding of torque and shear stress in mechanical systems
  • Familiarity with bolt design and specifications
  • Knowledge of mechanical engineering design principles
  • Basic mathematics for applying formulas in engineering contexts
NEXT STEPS
  • Research bolt shearing calculations in mechanical design
  • Study Cameron Shigley's "Mechanical Engineering Design" for comprehensive insights
  • Explore the effects of bolt placement radius on shear strength
  • Investigate additional resources on joint loading in mechanical assemblies
USEFUL FOR

Mechanical engineering students, design engineers, and professionals involved in pump design and joint loading analysis will benefit from this discussion.

CameronRose
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Hi folks,

I'm currently working on a final year project on the design of a plunger pump. The most recent area I have been studying is the loading on different joints in the pump. For a simplified example I have determined the maximum torque load on the crankshaft from the plungers for the desired operating pressure. Since the project is a design project I thought it would be interesting to also include some bolt shearing calculations to justify the design of the input flange on the pump.

I recall learning bolt shearing in 1st year however, that's only because the lecturer pronounced the word "bolts" as "balls", with hindsight I wish I had taken notes instead of laughed. I recall the formula T=τAnr where T=torque τ=shear stress A=cross sectional area of bolts n=number of bolts and r= radius of bolt placement.

Could someone please suggest a good reference where I can read about this? We have been told by the head of final year projects that projects submitted without a sufficient number of textbook references will lose marks.

Cameron
 
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Shigley' Mechanical Engineering Design comes to mind. If you don't already have it, you should invest in it
 
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