Tensile cables differ in thickness compared to struts primarily due to their loading conditions. When cables are under tension, they experience axial loading, allowing them to utilize their strength effectively based on the force-to-cross-section area ratio. In contrast, compression members face buckling, which limits their maximum strength as described by Euler's column formula and the bending equation, both of which depend on the moment of inertia influenced by the member's shape. This fundamental difference in loading behavior explains why thinner wires are more efficient for tying purposes.
PREREQUISITESStructural engineers, materials scientists, and students studying mechanics of materials will benefit from this discussion, as it provides insights into the practical applications of tensile and compressive strength in design.
lekh2003 said:I have tried looking on several forums on the internet as well as some educational sites and I oddly have no clue why thin wires are better at tying. The question is now stuck on my mind.
Is there anyone working in the practical field who can shed some information on this?
Thanks, I'll look into it.jonnybmac said:I think I have cracked it thank you.
When in tension it is only loaded axially so the strength is force the over cross-section area, but in compression you have buckling that stops the member reaching its maximum strength, and that if you look at the bending equation or Euler's column formula, they both rely on the moment of inertia which is affected by shape.