Question 1 1. The first step is to determine if the process is steady state or n

Question

Question 1 1. The first step is to determine if the process is steady state or non-steady state. The practical difference between these two is.. O b Steady state deformation utläizes the instantaneaus flow stress to analyze the deformation process d. Non-steady state deformation requires the use of strain rate rather than just using strain O c. Steady state deformation isn't changing, sa there isn't any deformation analysis to be done O a. Steady state deformation utilizes the mean flow stress to analyze the deformation process Question 2 Match the definitions with the term. Making a part shorter but fatter (with a larger cross sectional areal Upsetting Fullering Edging Reducing the thickness of a part in small bites instead of al at one time Using a concave curved press die that moves material inward from the edges I Choose) Using a convex curved press die that moves the material outward from the Choose l middle I Choose ]

Explanation / Answer

1)

Because in non-steady state deformation strain is not stable and it changes with time so instead of using strain, strain rate is used, hence option 'b' is correct.

2)

a) In upsetting, the part is made shorter and larger in cross sectional area by pressing the part between two die and applying pressure.

b) In cogging the cross section of part is reduced in small bits rather than all at once. It needed small machinery with less power.

c) Edging uses concave shaped die which which decreases the length of part and increases the cross section.

d) Fullering uses convex press drill which increses the length and reduces the cross section of part.

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