armin11 Messages 66 Reaction score 0 Thread starter Oct 30, 2010 #1 In a 3-D stress problem when we draw the 1st & 2nd & 3rd mohr circle for each plane what is a case or situation in which the 3rd mohr circle is smaller than the 1st & 2nd ones?
In a 3-D stress problem when we draw the 1st & 2nd & 3rd mohr circle for each plane what is a case or situation in which the 3rd mohr circle is smaller than the 1st & 2nd ones?
Mapes Science Advisor Homework Helper Gold Member Messages 2,591 Reaction score 21 Oct 30, 2010 #2 Sure. Consider [tex]\sigma=\left[\begin{array}{ccc}50&0&0\\&0&0\\&&50\end{array}\right]\,\mathrm{MPa.}[/tex] The x-y and y-z Mohr's circles are equivalent, but the x-z Mohr's circle is smaller: it's just a point at 50. Does this make sense?
Sure. Consider [tex]\sigma=\left[\begin{array}{ccc}50&0&0\\&0&0\\&&50\end{array}\right]\,\mathrm{MPa.}[/tex] The x-y and y-z Mohr's circles are equivalent, but the x-z Mohr's circle is smaller: it's just a point at 50. Does this make sense?