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Von Mises Stress

Von Mises Stress

Von Mises Stress

(OP)
Can anyone suggest a reference for a simplified definition of Von Mises Stress (preferably one that does not require vector math, or use of a Mohr Circle)  I need to be able to explain this to non-engineers...
Your help would be appreciated.

RE: Von Mises Stress

(OP)
Thanks, CoryPad.  I've been checking the efunda site today, and had found that as well.  If you come across anything else suitable, please let me know.

RE: Von Mises Stress

The following definition was essentially stated on the website mentioned above. This is what I have used to explain Von Mises to engineers and some nonengineers.  I'll use engineering terms in parentheses. This is not rigorous, but it's accurate.

"Materials are generally tested by stretching a piece of metal (a uniaxial tension test).  Real parts have much more complicated loads--twisting, bending, shearing, etc. Von Mises stress is a calculation which takes these complicated loads and figures out what their stretching (uniaxial tension) equivalent is.  With this Von Mises stress, people can compare complicated loading (stresses) in a part to the simple values (uniaxial tension) which are published in books)."

Brad

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