Page 33 - Fundamental Of Design In Mechanical Engineering

Definition of problem

◦ To begin the solution to a design problem with a clear, unambiguous

definition of the problem. Unlike an analysis problem, a design
problem often begins as unclear, abstract idea in the mind of the

designer. Creating a clear definition of a design problem is more

difficult than, defining an analysis problem. The definition of a design

problem may evolve through a series of steps or processes as you

develop a more complete understanding of the problem

◦ It must more specific and must include all the specification for the

object that is to be designed.

◦ The specification are the input and the output quantities, the

characteristic and dimension of the space the object must occupy
and all the limitation on these quantities.

◦ The specification define: cost, the number to be manufactured, the

expect life, the range, the operating temperature, and reliability.

Specified characteristics can include the speeds, feeds, temperature

limitation, maximum range, expected variation in the variables,

dimension and weight limitation.
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