The Evolution of Function and Behavior During Mechanical Design

1993 ◽  
Author(s):  
David G. Ullman
Keyword(s):  
Design Process ◽  
Mechanical Design ◽  
Design Rationale ◽  
Design History ◽  
Academic Interest ◽  
Computer Based ◽  
Tools And Techniques ◽  
And Behavior

Abstract This paper explores the meaning and evolution of function and behavior during mechanical design. The paper is based on an example from practice. The goal is to develop a model of the information developed during the design process and thus define the types of data inherent in mechanical design. Beyond the academic interest of defining function and behavior, this work is important to the development of representations for computer based design history and design rationale tools and techniques.

An Extensible Computer Environment for Modeling and Analysis in Mechanical Design

1991 ◽  
Author(s):  
T. A. Mashburn ◽  
D. C. Anderson
Keyword(s):  
Design Process ◽  
Mechanical Design ◽  
Modeling And Analysis ◽  
Computer Environment ◽  
And Behavior ◽  
Generic Component

Abstract This paper investigates a computer environment approach for the exploration of design behavior in the mechanical design process. Generic component types and behavior modelers are developed based on the needs of mechanical designers and are represented in a computer environment. Built-in component types and physical behaviors are also developed. Extension can then occur as needed during design refinement. The resulting system can support exploration and knowledge refinement during design.

Design Evolution Management: A Methodology for Representing and Utilizing Design Rationale

1990 ◽  
Author(s):  
James B. Thompson ◽  
Stephen C.-Y. Lu
Keyword(s):  
Design Process ◽  
Early Stage ◽  
Design Rationale ◽  
Design Strategies ◽  
Design Environment ◽  
Design Evolution ◽  
Design Engineers ◽  
Programming Techniques ◽  
Computer Based ◽  
Product Description

Abstract In conventional design practice, a detailed product description is the end-result of a design process. Usually these detailed product descriptions do not contain information linking their heritage from early-stage abstract product descriptions or the particular influence of different life-cycle perspectives. This “missing” information, a description of the multi-staged and multi-perspective design process, is termed a design evolution, and is a representation of the design rationale for a product description. This research focuses on the development of a methodology for Design Evolution Management, i.e. techniques for representation and subsequent utilization of a design evolution during a design process. Within this methodology, a design evolution is represented both at strategic and tactical levels. A prototype computer-based design environment called AIDEMS, based on this design methodology, has been built and is being tested in several design domains. This design environment provides design engineers a platform for expressing their design strategies and tactics and uses Artificial Intelligence programming techniques enabling semi-automated design assistance for: resource scheduling, explanation of design assertions, execution of design revisions, design inconsistency detection, and exploration of design alternatives.

Virtual Reality Promises New Design Capabilities

1994 ◽  
Author(s):  
Angela Trego ◽  
Spencer Magleby
Keyword(s):  
Virtual Reality ◽  
Engineering Design ◽  
Design Process ◽  
Mechanical Design ◽  
Design Engineering ◽  
Cad Systems ◽  
The Past ◽  
Engineering Design Process ◽  
Potential Applications ◽  
Computer Based

Abstract Virtual reality has received much attention in the past few years in relation to entertainment and simulation. Although there is much hype surrounding virtual reality, the underlying technologies and concepts could have a significant impact on computer-based design engineering tools. This paper explores the possible applications of virtual reality to the engineering design process. The objective of the described research is to explore opportunities to create tools, environments, and systems which will increase the designer’s productivity through the application of virtual reality (VR) technologies and concepts. Background on design, CAD and VR is presented to give a context for later proposals. Previous research in the application of VR to CAD is reviewed. Specific VR capabilities are presented to show their possible application in mechanical design and CAD systems specifically. The potential applications of VR are explored in a structured manner with examples for each category. The paper concludes with recommendations on further research and development directions.

A compositional approach to modelling design rationale

1997 ◽  
Vol 11 (2) ◽  
pp. 125-139 ◽  
Author(s):  
Frances M.T. Brazier ◽  
Pieter H.G. van Langen ◽  
Jan Treur
Keyword(s):  
Design Process ◽  
Functional Role ◽  
Aircraft Design ◽  
Explicit Representation ◽  
Design Rationale ◽  
Design History ◽  
Compositional Approach ◽  
Different Types ◽  
Modelling Process

AbstractDesign support systems need to be developed on the basis of an understanding of the human design process to be useful during design. The explicit representation of design history and rationale are of particular importance for explanation and reuse. Within the DESIRE framework for compositional modelling, a generic task model of design has been developed that clearly specifies the role of design history and design rationale within the design process. The model provides a structure to distinguish different types of design rationale, according to the functional role they play in the design process. It has been used to structure the modelling process of an example aircraft design task, which illustrates the various instances of design rationale that can be generated.

Issues Critical to the Development of Design History, Design Rationale and Design Intent Systems

1994 ◽  
Author(s):  
David G. Ullman
Keyword(s):  
Design Process ◽  
Design Rationale ◽  
Design History ◽  
Design Intent ◽  
Design Information ◽  
Corporate Memory

Abstract Design is the evolution of information. This evolution usually begins with an ill-defined need for a product and ends with exact specifications for production, use and retirement or recycling. A number of researchers have hypothesized that capture and reuse of this evolving information has potential for improving the design process and the reuse of design information. Published work has used the terms design history, design rationale, design intent and corporate memory to describe the systems that manage the capture, storage and query of the evolving information. The development of these systems depends on attention to 13 outstanding issues identified in this paper.

The design of modular oil tank: A new design process model

2020 ◽  
Vol 15 ◽  
Author(s):  
Jin Li ◽  
Xingsheng Jiang ◽  
Jingye Li ◽  
Yadong Zhao ◽  
Xuexing Li
Keyword(s):  
Product Design ◽  
Design Process ◽  
Process Model ◽  
Mechanical Design ◽  
Computer Software ◽  
Reference Value ◽  
Fuel Tank ◽  
Design Quality ◽  
Design Time ◽  
Design Process Model

Background: In the whole design process of modular fuel tank, there are some unreasonable phenomena. As a result, there are some defects in the design of modular fuel tank, and the function does not meet the requirements in advance. This paper studies this problem. Objective: Through on-the-spot investigation of the factory, a mechanical design process model is designed. The model can provide reference for product design participants on product design time and design quality, and can effectively solve the problem of low product design quality caused by unreasonable product design time arrangement. Methods: After sorting out the data from the factory investigation, computer software is used to program, simulate the information input of mechanical design process, and the final reference value is got. Results: This mechanical design process model is used to guide the design and production of a new project, nearly 3 months ahead of the original project completion time. Conclusion: This mechanical design process model can effectively guide the product design process, which is of great significance to the whole mechanical design field.

A model of the mechanical design process based on empirical data

1988 ◽  
Vol 2 (1) ◽  
pp. 33-52 ◽  
Author(s):  
David G. Ullman ◽  
Thomas G. Dietterich ◽  
Larry A. Stauffer
Keyword(s):  
Problem Solving ◽  
Detailed Analysis ◽  
Conceptual Design ◽  
Design Process ◽  
Empirical Data ◽  
Mechanical Design ◽  
Level Of Detail ◽  
Cad Tools ◽  
Design Alternatives ◽  
Key Features

This paper describes the task/episode accumulation model (TEA model) of non-routine mechanical design, which was developed after detailed analysis of the audio and video protocols of five mechanical designers. The model is able to explain the behavior of designers at a much finer level of detail than previous models. The key features of the model are (a) the design is constructed by incrementally refining and patching an initial conceptual design, (b) design alternatives are not considered outside the boundaries of design episodes (which are short stretches of problem solving aimed at specific goals), (c) the design process is controlled locally, primarily at the level of individual episodes. Among the implications of the model are the following: (a) CAD tools should be extended to represent the state of the design at more abstract levels, (b) CAD tools should help the designer manage constraints, and (c) CAD tools should be designed to give cognitive support to the designer.

An Integrated, Computer-Based Method for Rapid-Prototyping Weapons-Scale Marine Propulsors Using Stereolithography

1997 ◽  
Author(s):  
Robert M. Koch
Keyword(s):  
Rapid Prototyping ◽  
Design Process ◽  
Structural Design ◽  
Development Time ◽  
Underwater Vehicles ◽  
Process Efficiency ◽  
Two Phase ◽  
Unmanned Underwater Vehicles ◽  
Reduce Development Time ◽  
Computer Based

Abstract The present work describes an integrated, two-phase computer-based method for fabricating marine propulsors using stereolithography. This new methodology seamlessly integrates stereolithography rapid prototyping techniques with the hydrodynamic design, structural design, and prototype testing of advanced marine propulsors in order to greatly increase the design process efficiency and reduce development time. Its use as applied to the design, fabrication, and testing of advanced propulsor prototypes for small weapon’s-scale undersea vehicles (e.g., Unmanned Underwater Vehicles (UUVs), lightweight and heavyweight torpedoes, etc.) is described in order to demonstrate specific strengths of the new method.

The Roles of Features and Abstraction in Mechanical Design

1994 ◽  
Author(s):  
LeRoy E. Taylor ◽  
Mark R. Henderson
Keyword(s):  
Life Cycle ◽  
Engineering Design ◽  
Design Process ◽  
Design Research ◽  
Mechanical Design ◽  
Product Modeling ◽  
Product Models ◽  
Mechanical Products ◽  
Unique Framework ◽  
The Relationship

Abstract This paper describes the roles of features and abstraction mechanisms in the mechanical design process, mechanical designs, and product models of mechanical designs. It also describes the relationship between functions and features in mechanical design. It is our experience that many research efforts exist in the areas of design and product modeling and, further, that these efforts must be cataloged and compared. To this end, this paper culminates with the presentation of a multi-dimensional abstraction space which provides a unique framework for (a) comparing mechanical engineering design research efforts, (b) relating conceptual objects used in the life cycle of mechanical products, and (c) defining a product modeling space.

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