modular and modularization – wj zhang \classes\me\886 - structure - architecture (a generic...
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Modular and Modularization – WJ Zhangwww.engr.usask.ca\classes\me\886
- Structure
- Architecture (a generic perspective of the structure)
- Module concept
- Modular architecture
Module and ModularWhy should they be together as a group?
Why should they be together as a group?
- Function
- Process (manufacturing, recycling, etc.)
- Physic vicinity
Three aspects or reasons that components (A, B, etc.) should be gathered:
The above process is called modularization – starting with a group of components and deciding groups
Constraints imposed on modularization
- Cost
- Manufacturing culture
- User and society culture
New equipment for manufacturing, R&D on new technology, etc.
Manufacturing firms may need to make changes to a new module; high power systems are more difficult to be modularized
Users are willing to accept new modular products, their enthusiasms
Decision on modularization is a complex task, which has to consider:
1. Cost
2. Technology
3. User
In this lecture, we do not focus on how to make such a decision and how to modularize a product or system
Focus on
Interface between modules and what impacts of various interfaces to degree of modularization
Interfaces
Module 1 interfaces with module 2
Degree of modularization:
1. Exchangeability2. Extendibility3. Replacement ability4. Configurability5. Resilience
Six types of interfaces – implication of architecture
1. Component swapping2. Component sharing3. Fabricate to fit (cut to fit)4. Slot5. Bus6. Sectional
Remark 1: Some literature does not include “slot” interface as a means to achieve modular architecture. However, my opinion, it is yes – i.e., it is a way to make a modular product. Whether it is Yes or Not depends on however the reference product which is totally not modular, integral product. Examples of integral products are seen in the next slide.
Examples of integral products
Flexure hinge Rigid element
Examples of integral products
More generalization
Examples
Base component is the major one to add value to this product
Examples
It is not the base component which adds value but the pictures added on add values
ExamplesCut-to-fit
Summary:
1. Modular design lies in design of the system architecture2. System architecture represents the types of
components and types of their connections3. A module is an independent unit; elements inside the
module have very high strength of connection but elements outside the module have connections that are distinct with the six types
4. Design of a modular product is to determine modules and their interfaces. There are only six types of interfaces for modular products
Summary (continued)
5. Following the general architecture of any matter, the six types of interfaces can be called atomic interfaces. Molecular interfaces are compositions of atomic interfaces.
A complete modular product may include a mixture of interfaces