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L16 - Exam II Tuesday(April 6 2:00-3:50pm Covers Chapters...

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Exam II Tuesday (April 6) 2:00-3:50pm Covers Chapters 4-6 (L9-L15) Location: SAGE 3303 1 page crib sheet- double sided (no worked-out problems) 4 problems
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Ch7: Stress transformation state of stress: 6 components , , normal stresses , , shearing stresses (Note: , , ) x y z xy yz zx xy yx yz zy zx xz σ σ σ τ τ τ τ τ τ τ τ τ = = = Same state of stress is represented by a different set of components if axes are rotated. • Transformation
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Plane Stress - state of stress in which two faces of the cubic element are free of stress. (2-D stress) Happens when: thin plate subjected to forces acting in the mid- plane of the plate. xy , , 0. and x y z zx zy σ σ τ σ τ τ = = = free surface of a structural element or machine component, i.e., at any point of the surface not subjected to an external force. Plane Stress
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equilibrium of a prismatic element with faces perpendicular to the x , y , and x’ and y’ axes.
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