The maximum shear stress acting on the y-z face is not simply the greater of the two shear components, Sxy and Sxz. Instead, it is the resultant of these two orthogonal shear components. This conclusion is based on the understanding of stress transformation principles in mechanics of materials, which dictate that the maximum shear stress must account for both components rather than selecting the larger value.
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Neither. It's the resultant of Sxy and Sxz.physicsdumby said:I want to know the maximum shear stress acting on the y-z face(plane). I already know all 6 stress components: Sxx, Syy, Szz, Sxy, Syz, Sxz. The shear components on the y-z face are Sxy and Sxz, which are orthogonal to each other. Is the maximum shear on this plane simply the greater of the two, or is there one more transformation needed?