ped 2016 - design 101 - week 1 - handouts
DESCRIPTION
Design 101 http://goo.gl/wIql8w Week 2 Machine Element Design New Approach Course Objective =============== This is a fundamental course to discuss the criteria of Mechanical Design for both machine elements design and product design . The course will discuss the design as a process in making a lot of products by terms of manufacturing , sustainability and environmental aspects The Course is online and free to all Instructor Mohamed Mostafa Adam This course was presented by PED 2016 Production Engineering Department - Faculty of Engineering - Alexandria University - EgyptTRANSCRIPT
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Design Philosophy Week 1
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Course Objective
• The course focuses on the fundamentals and principles of basic mechanical elements, the manufacturing considerations and the product design processes .
• The goal of this course is to understand the very basic principles of these processes without dealing with mathematical equations.
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By the end of this course the student should be able to
Understand the principles of design, and the design processes.
Classify the main types of mechanical design.
Identify the different types of machine tool elements, and recognize the pros and cons of each element.
Get an overview of the manufacturing considerations.
Identify the product design process and its considerations.
Interact with the engineering world by applying the previously studied principles in a case study.
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We will discuss in this week the following
• Design Philosophy
• Design Process
• Design Levels
• Types of Mechanical Design
• How to be Successful Designer
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What is Design anyway ?
• Engineering Design is the process of devising a system, component, or process to meet desired needs.
• It is a decision-making process (often iterative), in which the basic sciences, mathematics, and engineering sciences are applied to optimally convert resources to meet a stated objective.
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Design is everywhere
• Design is in everything around us, choose anything you see even if you choose the universe, you will discover that it’s well designed.
• As an example you will find that you have a fashion designer who design your cloth and its size.
• Interior decorative designer who made the art in your home. A machine designer who made the equipment that you use in your factory, also furniture, electronics, buildings, food products; as an example; each of it has an independent person who creates of develop that product which is called a designer and the process of creation is called Design.
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The Design Process Paradox
Throughout the solution process knowledge about the problem and its potential solutions is gained and, conversely, design freedom is lost.
The more you learn the less freedom you have to use what you know.
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Design Levels
Adaptive Design
Development Design
New Design
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Types of Mechanical Design
Before beginning, we must realize that most design situations are a mix of various types of problems.
Traditionally, we decompose mechanical engineering by discipline: fluids, thermodynamics, mechanics, and so on
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Types of Mechanical Design
• Selection Design
• Configuration Design
• Parametric Design
• Original Design
• Redesign
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• Selection design involves choosing one item(or maybe more) from a list of similar items.
• We do this type of design every time we choose an item from a catalog.
Selection Design
To solve a selection problem we must start with a clear need
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Configuration Design
• In this type of problem, all the components have been designed and the problem is how to assemble them into the completed product.
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Parametric Design
• Parametric design involves finding values for the features that characterize the object being studied.
consider a very simple example.
We want to design a cylindrical storage tank that must hold 4𝑚3 of liquid. This tank is described by the parameters r, its radius, and l, its length and its volume is determined by V = π r ∗2 𝐿
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Original Design
• We use it Any time the design problem requires the development of a process, assembly, or component not previously in existence .
• In many ways the other types of design problems—selection, configuration, and parametric are simply constrained subsets of an original design
• Example Design a machine element with based on it’s standard
Spur Gear on AGMA
(American Gear Manufacturing Association) Standard
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Redesign
• Most design problems solved in industry are for the redesign of an existing product.
• Or in other words the modification of an existing product to meet new requirements.
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How to be Successful Designer
First you need to be in the shoe of 3 persons
• Product Manager
• Product Designer
• Manufacturing Manager
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Mechanical Design Languages
• Many “languages” or representations can be used to describe a mechanical object
Skilled Designer Speaks Many Languages
Graphical
Analytical Physical
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Thank You