10-14. The state of strain at the point on a boom of an hydraulic engine crane has components of Px = 250(10-6), Py = 300(10-6), and gxy = -180(10-6). Use the straintransformation equations to determine ( a) the in-plane principal strains and ( b) the maximum in-plane shear strain and average normal strain. In each case, specify the orientation of the element and show how the strains deform the element within the x-y plane. | |
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