set-up cost

set-up cost

the cost involved in preparing and setting up a machine for the next work task, including cleaning, replacement of cutting tools or jigs etc. Set-up costs include the labour costs of preparing machines, the cost of new tools and frequently higher scrap rates immediately after machine resetting.
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The EOQ model can easily show the effects of set-up cost reduction on total set-up and holding costs, total holding costs and total set-up costs.
Equation (1) shows that decreasing the set-up costs, S, will reduce the total cost per period, C.If the amount of set-up cost reduction is R, the total cost is reduced by [square root of]R.
All previous discussions of ZI are descriptive, but set-up cost reduction is viewed as an important factor.
Zangwill presents an example that is a non-stationary reduction of set-up cost. His example shows that cutting set-up cost need not reduce inventories and total cost.
Since the set-up costs during the day are higher than they are at night, the engineering department significantly reduces the set-up cost, which becomes [S.sub.1] = [S.sub.3] = 1, [S.sub.2] = [S.sub.4] = 4.
In practice, a major factor of set-up cost reduction is set-up time reduction.
Adopting the above notations, let us discuss the case of stationary reduction of set-up costs. Let R be the amount of set-up cost reduction for each period.
Suppose the amount of the set-up cost reduction is [R.sub.i] in each period i, then as [R.sub.i] increases the total cost should be decreased.
The total cost should be reduced by set-up cost reduction [R.sub.i], i = 1, ..., t.
What is the new total holding costs when set-up cost is stationarily cut by R.
(1) the relation of the reduction between the total cost and the set-up cost with normal distribution and 100 runs of simulation;
The effects of varying set-up costs
The set-up costs are US$4,000, the holding costs are 30 per cent, the initial unit cost is US$40, with a demand for 12,000 units per year and an inflation rate of 12 per cent.
"A simulation analysis of ordering policies under inflationary conditions": a critique
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