chandra_324_hw2_soln

chandra_324_hw2_soln - Solution for ME324 HW #2 1. SOLUTION...

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Solution for ME324 HW #2 1. SOLUTION Metals with low thermal conductivity and strength that decreases sharply with temperature, such as titanium, exhibit this behavior. 2. SOLUTION (1) Increasing the depth of cut means more material removed per unit time. Thus, all other param- eters remaining constant, the cutting force has to increase linearly because the energy requirement increases linearly. (2) As the rake angle decreases, the shear angle decreases and hence the shear strain increases. Therefore, more energy per unit volume of material removed is required, hence the cutting force has to increase. Note that the rake angle also has an effect on the friction energy. 3. SOLUTION There are many effects of performing a cutting operation with a dull tool. Note that a dull tool is one having an increased tip radius. As the tip radius increases, the cutting force increases due to the fact that the effective rake angle is decreased. In addition, if the tip radius is larger than the
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This note was uploaded on 10/13/2008 for the course ME 324 taught by Professor Boylan during the Spring '08 term at Iowa State.

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chandra_324_hw2_soln - Solution for ME324 HW #2 1. SOLUTION...

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