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Design and Concept of Mechanical Design - Coggle Diagram
Design and Concept of Mechanical Design
Design: to formulate a plan that satisfy a particular need and to create something with a physical reality
Basic Concept of Design
Consideration of different factors
To draw certain conclusions leading to an optimum
design
Market survey to read people’s mind
Study of existing norms
Mechanical engineering Design
Use the knowledge of statics, dynamics, thermodynamics and others in design process
Good design
Design require analysis and synthesis
Analysis
Use of engineering and scientific disciplines to characterize product performance
Synthesis
Involves the combination of solutions into a total workable system
A good design provides a solution to the identified problem in an innovative manners and define a standard for others to follow
Design process
Conceptual
Design
Embodiment
Design
Detail
Design
Planning for
Manufacture
Planning for
Distribution
Planning for
Use
Planning for
Retirement
Codes and Standard
Codes
Collections of laws and rules that assist a government agency in meeting its obligations to protect the general welfare by preventing damage to property or injury or lost of life to persons
Tell engineer what to do and when and under what circumstances to do it.
Usually legal requirements
Type of Codes
Performance
Codes
Stated in terms of the specific requirement that expected to be archived . The method is not specified
Prescriptive or
specification codes
State requirements in terms of specific details and leave no discretion to the designer
Standard
Generally agreed upon set of procedures, criteria,dimensions, materials or parts such as dimensions and sizes of screws, bearings and procedure for testing yield
strength
Tell engineer how to do it and are usually regarded as recommendations that do not have the force of law.
Often incorporate national standards into them byreference and by this way the standards become legally enforceable
Category of Design Standard
Performance
Standards : Publish standards such as seat belts, auto crash safety
Test Methods: Methods to
measure properties such as yield
strength, thermal conductivity and
electrical resistivity.
Codes of
Practice: Give detail design
methods for repetitive technical
problems such as design of piping,
heat exchanger, pressure vessels.
How Standard is made :
Prepared by individual companies
for their own used such as manufacturing process,
dimensions, tolerances others
Prepared by group of
companies in the same industry for example American Institute
of Steel Construction (AISC).
Prepared by government agency
set a standard for example MIL
standard (military standard) for
Department of Defense.
Ensuring
Efficiency
Safety
Promotes
Interchangeability
compatibility