Dear all,

I tried to plot the shear stress of a cantilever beam, which is loaded

at one free end by a downward force (-y direction). Then I tried to

plot the shear stress of the left half of the beam, and found that the

shear stress (sigma_xy) in the whole left half is negative.

Then I tried to plot the shear stress of the right half of the beam, I

found that all the shear stress in the whole right half is negative

too.

My question: From the free body diagram of the left half, the force

applied by the right half to the left half at the cut-section should

be downward (-y), and the force applied by the left half to the righ

half, at the cut-section, should be positive. HOw comes both shear

stress plotting, for both left and right halves, have all negative

shear stress values?

I may have missed something. But can somebody explain a little, Or if

you know how to interpret ANSYS' shear stress plot?

Thanks a lot in advance,

hardlu

- posted 17 years ago