Choose a design based on stress

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SUMMARY

In the discussion regarding two designs for a component, Design 1 has a stress of 120 MPa, while Design 2 has a stress of 90 MPa. Both designs utilize the same material, with an ultimate strength of 290 MPa and a yield strength of 250 MPa. When considering yield strength as the primary criterion, Design 2 is preferable as it provides a greater factor of safety, allowing it to withstand accidental loads more effectively than Design 1.

PREREQUISITES
  • Understanding of yield strength and ultimate strength in materials
  • Knowledge of stress analysis in engineering design
  • Familiarity with the concept of Factor of Safety
  • Basic principles of material selection for engineering applications
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  • Research the concept of Factor of Safety in engineering design
  • Learn about stress-strain relationships in materials
  • Explore the implications of yield strength on design choices
  • Investigate material properties and their impact on component performance
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Mechanical engineers, materials scientists, and design engineers involved in component selection and stress analysis will benefit from this discussion.

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Homework Statement



Your given two designs for the same component. Design 1 has a stress pf 120 Mpa design 2 has a stress of 90Mpa. They are both made from the same material and the ultimate strength is 290Mpa and the yeild strength is 250 for both. The question is if yeild strength is the loss of function parameter which design would you pick,


I would think to choose one b/c it can handle more stress but i don't know what that has to do with yeild strength could someone point me in the right direction.
 
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If your only criteria is yield stress, not deflection, neither fatigue life, nor weight or cost and not manufacturing. Then you are solely talking about Factor of Safety. In that case, design two will handle more accidental loads than design one, under the same requirements.
 
Can you explain which design offers more strength ?
 

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