Design for adaptability

View/ Open
Date
2005-05-25Author
Hashemian, Mehdi
Type
ThesisDegree Level
DoctoralMetadata
Show full item recordAbstract
Manufacturing globalization and sustainable development compel production enterprises to continuously seek improvements in their products’ performance, customization, environmental friendliness, cost, and delivery time. The challenges of this competition cannot be completely addressed through improving production processes because some issues can only be solved through more innovative ‘design’. This thesis investigates a new design paradigm called Design for Adaptability or Adaptable Design (AD) to address some of these challenges. The purpose of AD is to extend the utility of designs and products. An adaptable ‘design’ allows manufacturers to quickly develop new and upgraded models or customized products through adapting existing designs with proven quality and costs. An adaptable ‘product’ can be utilized under varying service requirements thus prevents premature product replacement. Design adaptability and product adaptability provide economical and environmental benefits of AD. To make a product adaptable, its adaptability must be built-in during the design stage. Methods of design for ‘predetermined’ adaptations are categorized as Specific AD; these methods design products for versatility, upgrading, variety, and customization. Several of these methods such as modular/platform design and design for upgrading have been studied for mechanical design. In the absence of predetermined adaptations, AD aims to increase the general adaptability of products. General AD involves fundamental research in design theory and methodology in order to develop practical design methods and guidelines. This thesis introduces several original concepts and proposes the “subordination of a system to a rational functional structure” as an approach for increasing general adaptability. Such a system would consist of a hierarchical assembly of autonomous functional modules, emulating the adaptable architecture of a ‘rational functional structure’. Methods and guidelines are proposed for making the design of mechanical systems closer to this ideal architecture. Accordingly, the thesis proposes a methodology for AD in which specific AD is performed first to take advantage of available ‘forecast’ information, and then general AD is performed in order to increase adaptability to ‘unforeseen’ changes. Also, a measure has been defined for the assessment of adaptability. The application of this methodology has been demonstrated through several conceptual design examples.
Degree
Doctor of Philosophy (Ph.D.)Department
Mechanical EngineeringProgram
Mechanical EngineeringSupervisor
Gu, PeihuaCommittee
Zhang, W. J. (Chris); Watson, L. Glen; Wang, G.; Schoenau, Greg J.; Kushwaha, Radhey Lal; Dolovich, Allan T.Copyright Date
May 2005Subject
product design
design theory and methodology
modular design
information content
function
product architecture design
adaptable design
frame-and-function
platform design
Collections
Related items
Showing items related by title, author, creator and subject.
-
A comparison of axiomatic design theory and systematic design procedure in the design of a solid state fermenter
muddada, sampath (2015-10-23)Design theories and methodologies are guidelines to develop design solutions. Among many, the Axiomatic design theory (ADT) and Systematic design procedures (SDP) are two well-known approaches to design. For practical ... -
IMPROVEMENT OF GENERAL DESIGN THEORY AND METHODOLOGY WITH ITS APPLICATION TO DESIGN OF A RETRACTOR FOR VENTRAL HERNIA REPAIR SURGERY
Dai, Zhenwei 1991- (2019-03-28)Open surgery is an efficient way to cure massive ventral hernias in the clinic. During the surgical process, a spatula is used to prevent intestine tissues from damage of suture passer, possibly causing damage and taking ... -
Life-cycle cost analysis and probabilistic cost estimating in engineering design using an air duct design case study
Asiedu, Yaw (2000-04-01)Although the issue of uncertainties in cost model parameters has been recognized as an important aspect of life-cycle cost analysis, it is often ignored or not well treated in cost estimating. A simulation approach ...