The discussion focuses on the derivation and testing of the stress-strain curve, which includes a linear portion followed by a nonlinear region. Key testing methods mentioned are tensile testing and the measurement of shear strain. Participants express confusion regarding the relationship between nominal stress and shear strain, highlighting a lack of comprehensive resources on this topic. The conversation emphasizes the complexity of understanding these mechanical properties and the need for further exploration of shear stress and strain relationships.
PREREQUISITESEngineers, material scientists, and students studying mechanics of materials will benefit from this discussion, particularly those interested in understanding stress-strain relationships and testing methodologies.
https://en.wikipedia.org/wiki/Tensile_testingmertcan said:hi, I am aware that stress strain curve involves some function which begins with linear part and continues with non linear part after a while. I consider that it is so complicated, but I really wonder how a stress strain curve is derived, what kind of tests are applied and how those tests are applied?
ok but what about shear stress??, the link shared is only about nominal stresses. How is shear strain measured??berkeman said:
You didn't ask about shear stress in your opening post. Sigh. How about you do a quick Google search to see if you can answer your question easily...mertcan said:ok but what about shear stress??, the link shared is only about nominal stresses. How is shear strain measured??
Actually, I would like to ask how can we find the relation between nominal stress and shear strain? I am aware that in some situations nominal stress along x-axis may change nominal strain along x axis, also nominal strain y axis, also shear strain on xy plane for instance. How can we obtain nominal stress along x and shear strain curve? There are not enough sources on internet by the way...berkeman said:You didn't ask about shear stress in your opening post. Sigh. How about you do a quick Google search to see if you can answer your question easily...