(a) three principal stresses, sigma1, sigma2, sigma 3 (however, sigma1>sigma2>sigma3)
(b)direction of principal stress (let the principal stress discharge be x', y', z')
Mark the x, y, z axes and x', y', z' on the microelements as shown in Figure-1.
(Picture-2 is an example, not an answer)
(c) Absolute maximum shear stress (tau abs )
A Three Principal Stresses Sigma1 Sigma2 Sigma 3 However Sigma1 Sigma2 Sigma3 B Direction Of Principal Stress 1 (134.26 KiB) Viewed 18 times
у y c. 25 MPa x' 20 MPa 0,=? р 40 MPa > -.1 22 2 2,2
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