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ROLE OF MODELS DESIGN

BY

A.SIKKANDER IDRIES

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ROLE OF MODELS DESIGN

Evaluation of the performance of

parts, product,& systems System is a central activity of

engineer's & engineering design

Analyzing performance is a crucial

step in the product development

(that is a conceptual design)

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ROLE OF MODELS DESIGN

Our engineering courses teach First principles

in subject like statics, dynamics, mechanics ofmaterial

Its immediate environment in a complex word

problem that student learn to solve using a variety ofanalytical, logical mathematical, & empirical

methods

Efficient analysis of products & system

requires description of each design

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ROLE OF MODELS DESIGN

The description requires for analysis is

called a model. The model can include a representation of the

physical aspect of the product

(that is a sketch or geometry models)

physical model made plastics or wood mathematical modeling are created

to explore a design space by solving

the equation for input variable

to obtain a set of output

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TYPE OF MODELS

Static or dynamic

Deterministic or probabilistic

Iconic models

Analog models

symbolic models

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STATIC MODELS

Static models is one whose properties

Do not change with time

Model in which time varying

Effect are considered is dynamic

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DETERMINISTIC MODELS

Deterministic models describes the behaviors ofsystem

Which outcome of an event

Event occurs with certainty

Many real world situation

Outcome of event is not known with certainty

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ICONIC MODELS

Iconic model is a physical models that looks like real

thing

Generally the model scale is reduced from the

situation

Iconic model can be used to gain understanding of

the system

Geometry representation of two dimension& threedimension

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ANALOG MODEL

Analog models are based on the physical

phenomena

This allows the use of a solution based in onphysical science

Electrical circuits to solve a problem in a completely

field

Analog model may look nothing like real system

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SYMBOLIC MODELS

Symbolic models are abstraction of the quantifiable

Components is a physical system

That is use of symbols properties of real system

Mathematical equation expressing the dependencesystem

Output parameter on the input parameter is commonsymbolic

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MATHEMATICAL MODELS

Mathematical modeling component systemare represent by

idealized elements that have the essentialcharacteristics

Whose behavior can be described bymathematical equation

How ever it must always be understood thatis a models

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MODEL- BUILDING PROCESS

1 Problem statement

2 Select the engineering design option space

3 Define the boundaries of the model

4 Find available information to support building themodel

5 Determine what physical laws are pertinent to theproblem

6 Assumption

7 Construction the model and verify the model

8 Analysis

9 Validate the model

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THANK YOU