Concept of Engineering Design

7/27/2019 Concept of Engineering Design

1/14

PRESENT BY

T.RAJKUMAR

M.E (ENGINEERING

DESIGN)

PSNA CET

CONCEPT OF ENGINEERING DESIGN


2/14


3/14

STEP IN THE DESIGN PROCESS


4/14

RPODUCT ARCHITECTURE

Product architecture is the arrangement of the physical element of a

product to carryout is required function.

There functional structure was determine as a way of generating

design concept.

Some organization refer to this as system-level design.

Four step process for developing the product architecture

I. create a schematic diagram of the product

II. cluster the element of the schematic

III. create a rough geometric layout

IV. identify the fundamental and incidental interactions


5/14

I. CREAATE THE SCHEMATIC DIAGRAM OF

THE PRODUCT


6/14

II. CLUSTER THE ELEMENT OF THE

SCHEMATIC


7/14

III. CREATE A ROUGH GEOMETRIC

LAYOUT


8/14

IV. IDENTIFY THE FUNDAMENTAL AND

INCIDENTAL INTER ACTION

For a quality design the interaction between the chunk should be

controlled.

Here the first category of interaction is fundamental interaction.

It is used to under stood the design.

The second type of interaction is incident interaction. Itis result

of the physical implementation of the functional element.


9/14

In configuration design we establish the shape and generaldimensions of components.

Fig-Method of productions

CONFIGURATION DESIGN


10/14

In starting configuration design we should follow these steps

Review the product design specification.

Establish the spatial constrains that pertain to the product or the

assembly being designed.

Create and refine the interface or connection between components.

Again, the product architecture should give much guidance in thisrespect.

In carrying out the design it is important to maintain functional

independence in the design of an assembly.

Before spending much time of the design, answer the following

question

1. can the part be eliminated or combined with other part?

2. can a standard part or module be used?


11/14

PARAMETRIC DESIGN

In parametric design the attributes of the parts identified in configuration

design.

The design moves into parametric design, later part of embodiment design.

Designing to maximize performance and quality involves the following

design procedure.

1. Failure Mode and Effective Analysis

2. Design for reliability

3. Robust design

4. Tolerance


12/14

1.Failure Mode and Effective Analysis

FMEA is a methodology of determining all possible way thatcomponent can fail and establishing the failure on the system.

2. Design for reliabilityReliability is a measurement of the capacity of a system to operatewithout failure in the service environment.

3. Robust design

Robust design is used to reduce the variability in performance andmanufacture.

Process of robust design 1. system design 2. parameter design 3.tolerance design

4. Tolerance

Tolerance must be placed on dimensions of a part permissiblevariation in size.

Tolerance is the acceptable variation to the ideal or normalvariations.


13/14

BEST PRACTICE

It is much more difficult to give prescribed set ofmethods for embodiment design and conceptualdesign .

The general objectives of the embodiment phase ofdesign are the fulfillment of the required technicalfunction.


14/14

Concept of Engineering Design

Documents

Transcript of Concept of Engineering Design