A Generic Framework for the Integration of Mechanical and Electrical CAD Tools for Concurrent Design of Consumer Electronic Products

1995 ◽  
Author(s):  
Fu-Chung Wang ◽  
Paul K. Wright ◽  
Brian C. Richards
Keyword(s):  
Design Process ◽  
Printed Circuit Boards ◽  
Research Effort ◽  
Concurrent Design ◽  
Design Environment ◽  
Cad Tools ◽  
Design Data ◽  
Electronic Products ◽  
Good Communication ◽  
Consumer Electronic

Abstract Most consumer or commercial electronic products are electromechanical systems consisting of mechanical components such as structures, enclosures, driving systems and mechanisms, combined with electrical components such as printed circuit boards (PCBs), power supply, wires (harness) and switches. The design of such multidisciplinary products involves high coordination and cooperation between the two different engineering fields of mechanical and electrical design. However, in spite of the advancements of CAD tool development in design automation technology within each field, a gap still exists for good communication between the designers in these two fields during the course of the design. This gap makes the design process of such products time-consuming and error prone. This paper describes a research effort that facilitates multidisciplinary concurrent design for consumer electronic products. The focus is on how to integrate mechanical and electrical CAD tools into a more flexible and extensible concurrent design environment to share and communicate critical design information during the design process. A multidisciplinary concurrent design environment based on the CAD framework concept is described. Approaches for integrating the design data and information in such a multidisciplinary design environment are discussed. A prototyping system for the concurrent design of consumer electronic products is also presented.

A Generic Framework for the Integration of Mechanical and Electrical CAD Tools for Concurrent Design of Consumer Electronic Products

1995 ◽  
Author(s):  
Fu-Chung Wang ◽  
Brian Richards ◽  
Paul K. Wright
Keyword(s):  
Design Process ◽  
Printed Circuit Boards ◽  
Research Effort ◽  
Concurrent Design ◽  
Design Environment ◽  
Cad Tools ◽  
Design Data ◽  
Electronic Products ◽  
Good Communication ◽  
Consumer Electronic

Abstract Most consumer or commercial electronic products are electro-mechanical systems consisting of mechanical components such as structures, enclosures, driving systems and mechanisms, combined with electrical components such as printed circuit boards (PCBs), power supply, wires (harness) and switches. The design of such multidisciplinary products involves high coordination and cooperation between the two different engineering fields of mechanical and electrical design. However, in spite of the advancements of CAD tool development in design automation technology within each field, a gap still exists for good communication between the designers in these two fields during the course of the design. This gap makes the design process of such products time-consuming and error prone. This paper describes a research effort that facilitates multidisciplinary concurrent design for consumer electronic products. The focus is on how to integrate mechanical and electrical CAD tools into a more flexible and extensible concurrent design environment to share and communicate critical design information during the design process. A multidisciplinary concurrent design environment based on the CAD framework concept is described. Approaches for integrating the design data and information in such a multidisciplinary design environment are discussed. A prototyping system for the concurrent design of consumer electronic products is also presented.

EYES - Ergonomics in a Conceptual Design Process for Consumer Electronic Products

1991 ◽  
Vol 35 (6) ◽  
pp. 466-470 ◽  
Author(s):  
Myun W. Lee ◽  
Myung Hwan Yun ◽  
Donghyun Park ◽  
Young Ho Chun ◽  
Eui S. Jung ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Electronic Products ◽  
Consumer Electronic

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.

Virtual Assembly Design Environment

1995 ◽  
Author(s):  
Hugh I. Connacher ◽  
Sankar Jayaram ◽  
Kevin Lyons
Keyword(s):  
Virtual Reality ◽  
Research Effort ◽  
New Technology ◽  
Natural Extension ◽  
Virtual Assembly ◽  
Software Systems ◽  
Design Environment ◽  
Cad System ◽  
Assembly Design ◽  
Design And Manufacturing

Abstract Virtual reality is a technology which is often regarded as a natural extension to 3D computer graphics with advanced input and output devices. This technology has only recently matured enough to warrant serious engineering applications. The integration of this new technology with software systems for engineering, design and manufacturing will provide a new boost to the field of computer-aided engineering. One aspect of design and manufacturing which may be significantly affected by virtual reality is design for assembly. This paper presents the ideas behind a current research effort aimed at creating a virtual assembly design environment and integrating that environment with a commercial, parametric CAD system.

A Practical Formal Safety Assessment System for the Marine Design Environment

1999 ◽  
Vol 36 (04) ◽  
pp. 183-293
Author(s):  
C. F. Cain ◽  
R. W. Birmingham ◽  
P. Sen ◽  
R. M. Cripps
Keyword(s):  
Case Studies ◽  
Design Process ◽  
Safety Assessment ◽  
Assessment System ◽  
Statistical Techniques ◽  
Catastrophic Failure ◽  
Practical Application ◽  
Design Environment ◽  
Formal Safety Assessment ◽  
Design For Safety

In marine design safety, decisions are based largely on the experience of the designers, expressed in a semi-formal way. Dangers are inherent in this approach, in that there is a possibility of overlooking catastrophic failure scenarios. This paper investigates a procedure dedicated to design for safety and describes its practical application to the marine design process. The developed formal safety assessment system comprises various well established safety assessment methods and statistical techniques, which in combination facilitate a novel, holistic and practical approach in incorporating safety aspects at the initial design stages. The system has been developed in the context of the Royal National Lifeboat Institution (RNLI) rescue vessel design process and was validated using various rescue vessel case studies. The formal safety assessment system and the supporting software written to facilitate its implementation are now being fully used in the development of current RNLI rescue vessel designs.

Forced Response and Random Vibration Analysis of Printed Circuit Boards

2000 ◽  
Author(s):  
James F. Tarter
Keyword(s):  
Random Vibration ◽  
Printed Circuit Boards ◽  
Random Excitation ◽  
Forced Response ◽  
Circuit Boards ◽  
Element Analysis ◽  
Design Data ◽  
Improve Design ◽  
Printed Circuit ◽  
Contour Plots

Abstract Finite element analysis has been used in conjunction with developed algorithms to analyze forced response and random vibration response of printed circuit boards. Analytical predictions have been compared to random vibration test data for model correlation and validation of the analysis methods. The described methods provide design data for predicting deflections and G levels as a function of frequency or predicting RMS levels for random excitation. These data are utilized for initiating design changes and guiding component placement. Deflection versus frequency contributions for random excitation are analyzed to identify critical design frequencies. Forced response contour plots include effects of modal coupling, modal participation factors, and system damping. These data provide a better description of the expected operating deflection shapes man a simple mode shape. All of these methods are used to improve design integrity and ensure specification compliance prior to hardware fabrication. The analyses utilize aggregate board properties, and do not currently provide data for individual components which are installed on the board.

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