1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Materials engineering help required please

  1. Mar 25, 2013 #1
    A tie rod of max strength and minimum mass performance index

    Max strength - τ= 2T/πr³

    Min mass- P=t^(2/3)/p

    I have been asked to explain how the performance index is affected by

    (i) safety factor
    (ii) changing the objective to minimum cost

    Any help would be greatly appreciated

  2. jcsd
  3. Mar 25, 2013 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    Safety factor on what? Stress? A key dimension?

    How does one define stress, and how does it relate to the dimensions.

    Then think what one does to minimize stress.

    To minimize cost, one minimizes material usage, e.g., with thinner load bearing sections.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Materials engineering help required please