Software Engineering

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12.2 
Structural design considerations
12.2.2 
Use of modeling and simulation
The purpose of all engineering disciplines is to design a solution to a problem 
utilizing mathematics or scientific principles to design, plan, construct, or main-
tain products. A product design is almost always shown in the form of models that 
express the design characteristics of the product on a smaller scale than the orig-
inal. Engineering diagrams and drawings are forms of static models that express 
manufacturing, assembly, construction, maintenance, or engineering details. 
Simulations are dynamic models that are used to support the conduct of experi-
ments to gather information concerning the product or process design. The results 
of modeling and simulation are used to refine the engineering characteristics and 
design to improve product performance, dependability,
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 and life-cycle sustainment 
qualities of the product.
Modeling and simulation is the use of models, including emulators, prototypes, 
simulators, and stimulators, either statically or over time, to develop data as a basis 
for making architectural decisions. The terms 
modeling
 and 
simulation
 are often 
used interchangeably.
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 Models are static representations of the product or process 
being designed, while simulations are dynamic representations.
Models and simulations are engineering tools used to: