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Unformatted text preview: ABC can be considered rigid. When a force F = 10 N is applied at C , the wire BD is observed to increase in length by 1 mm. If the wire diameter is 0.6 mm, estimate Youngs modulus for the material of the wire. If it is also known that the wire material has Poissons ratio = . 25, find the change in diameter of the wire due to the load and hence find the percentage change in the total volume of wire. 500 900 F A C 1000 B D all dimensions in mm. Figure 4 5. The Youngs modulus for aluminum is E = 70 GPa and Poissons ratio = . 34. The following strains are measured on the surface of an aluminum part: x = 350 10 6 ; y = 900 10 6 ; xy = 700 10 6 . Calculate the in-plane stress components and the out-of-plane strain z . (The surface is perpen-dicular to the z-direction, and there are no tractions applied to it.) 3...
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- Fall '07