Knowledge Management Framework for Design Verification Process With Computer-Aided Engineering Analysis

2010 ◽  
Author(s):  
Yutaka Nomaguchi ◽  
Kousuke Nakashima ◽  
Kikuo Fujita
Keyword(s):  
Computer Aided Design ◽  
Second Phase ◽  
Design Verification ◽  
Engineering Analysis ◽  
Computer Aided ◽  
Design Activities ◽  
Verification Process ◽  
Two Phases ◽  
Issue Based Information System ◽  
Process Structure

Computer-based engineering analysis has become an essential means for verifying an engineering design. Its effects depend on not only available computational methods and computer performance but also what models and conditions are given to the computation. Their explicit representation and management must become a forefront and serious task of computer-aided design activities for their better documentation, more appropriate quality assurance, wider utilization, etc. This paper proposes a framework for representing and managing the knowledge involved in engineering analysis modeling for design verification. The computation-based design consists of the two phases, engineering analysis for understanding physical phenomena and design verification based on its results. The management format of the engineering analysis modeling process, which is named EAMM (Engineering Analysis Modeling Matrix), is introduced for the first phase. The process structure of design verification and classification of designer’s decision making are discussed for the second phase by referring the framework of EAMM. gIBIS (graphical Issue-Based Information System) model, which is a format for describing argumentation, is adopted for representing the process structure and the designer’s decision makings. A design process of a micro mixing mechanism demonstrates the potential and the promise of a proposed framework.

scholarly journals AUTOMATION OF SHEET METAL COMBINATION DIE DESIGN PROCESS

2021 ◽  
Vol 13 (2) ◽  
pp. 39-44
Author(s):  
Hussein M.A. Hussein ◽  
◽  
Hossam Salem ◽  
Walla Abdelzaher ◽  
Vishal Naranje ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Computer Aided Design ◽  
Die Design ◽  
Second Phase ◽  
Seamless Integration ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Computer Aided ◽  
Two Phases ◽  
Aided Design

This paper proposed a novel methodology for designing and manufacturing of sheet metal dies based on features of sheet parts. Also, combination is designed according to die cupping and punching features of sheet metal parts. The proposed approach is an attempt to make seamless integration of computer aided design with computer aided manufacturing. The features used in this study are taken from MusumiTM Catalogue as well as from various small and medium scale sheet metal industries. Work is divided into two phases. In the first phase, the relevant geometrical and topological data is extracted by reading STEP AP 203. In the second phase, a combine adjacency matrix and rule-based system is developed to recognize sheet metal features for die manufacturing. The system showed excellent performance for all types of features contained in the MusumiTM catalog and for different sheet metal industries. The proposed system for automated design of combination dies for sheet metal parts has been tested successfully for various types of industrial deep drawn parts. It reduces the die compoment design time from hours to minutes. selection of die components and drawings generated by the system were found to be reasonable and very similar to those actually used in the sheet metal industries for production of these typical components on combination dies.

Computer-Aided Form Generation for Product Design

2010 ◽  
Vol 97-101 ◽  
pp. 3785-3788
Author(s):  
Hung Cheng Tsai ◽  
Tien Li Chen ◽  
Hung Jung Tsai ◽  
Fei Kung Hung
Keyword(s):  
Computer Aided Design ◽  
Product Form ◽  
Knowledge Based ◽  
Blending Method ◽  
Computer Aided ◽  
Design Activities ◽  
Form Design ◽  
Product Form Design ◽  
Aided Design ◽  
Product Forms

The product form design activities involve a high degree of uncertainty and complexity and are therefore not easily formulated, coded and regularized. Consequently, very few of the computer-aided design approaches presented in the literature can support the conceptual form design tasks typically performed at the preliminary stages of a product’s development cycle. To enable designers to perform their design activities more objectively and efficiently, this paper combines the principles of fuzzy set theory, the shape-blending method and genetic algorithms to generate a knowledge-based approach for product form design based upon a database describing the relationships between different product forms and their corresponding perceptual image evaluations.

Geometric Issues in Computer Aided Design/Computer Aided Engineering Integration

2011 ◽  
Vol 11 (2) ◽  
Author(s):  
Vadim Shapiro ◽  
Igor Tsukanov ◽  
Alex Grishin
Keyword(s):  
Computer Aided Design ◽  
Computer Aided Engineering ◽  
Geometric Design ◽  
Engineering Analysis ◽  
Engineering Applications ◽  
Fully Integrated ◽  
Computer Aided ◽  
Geometric Representations ◽  
Engineering Integration ◽  
Aided Design

The long-standing goal of computer aided design (CAD)/computer aided engineering (CAE) integration demands seamless interfaces between geometric design and engineering analysis/simulation tasks. The key challenge to this integration stems from the distinct and often incompatible roles geometric representations play, respectively, in design and analysis. This paper critically examines and compares known mesh-based and meshfree approaches to CAD/CAE integration, focusing on the basic tasks and components required for building fully integrated engineering applications. For each task, we identify the fundamental requirements and challenges and discuss how they may be met by known techniques and proposed solutions.

A computer-aided product redesign system for robotic assembly

Robotica ◽  
1998 ◽  
Vol 16 (3) ◽  
pp. 239-249 ◽  
Author(s):  
Wynne Hsu ◽  
C. S. G. Lee ◽  
Andrew Lim
Keyword(s):  
Objective Evaluation ◽  
Design Guidelines ◽  
Robotic Assembly ◽  
Second Phase ◽  
Input Design ◽  
Design Alternatives ◽  
Computer Aided ◽  
Established Fact ◽  
Two Phases ◽  
Assembly Constraints

It is an established fact that a majority of a product's cost is determined by its design. Hence, effort should be directed to achieve a lower cost design without sacrificing the original functionality. A computer-aided product redesign system is proposed to provide help in generating assembly-oriented redesign by taking the robotic assembly constraints into consideration. The system operates in two phases: In the first phase, an objective evaluation of the input design is performed to determine whether there is a need for redesign. During the second phase, the focus is to aid the designer in searching for feasible design alternatives. Three quantitative measures have been proposed to evaluate the conformity of an input design to a list of DFA design guidelines. If the input design received a bad evaluation results on any of the three measures, a search for feasible redesign suggestions is initiated to derive suitable redesign suggestions.

Bringing Human Performance Data to the Design Table

1993 ◽  
Vol 37 (16) ◽  
pp. 1087-1090 ◽  
Author(s):  
Thomas R. Cona ◽  
Donald L. Monk
Keyword(s):  
Human Factors ◽  
Computer Aided Design ◽  
Human Performance ◽  
Information Access ◽  
Relevant Information ◽  
Common Denominator ◽  
Human Engineering ◽  
Computer Aided ◽  
Design Activities ◽  
Aided Design

Product design is often viewed as being a heterarchical and iterative process, possessing both systematic and chaotic qualities. However, a common denominator across all design activities is the access and utilization of information. In today's computer-aided design market, most of the available tools are narrowly focused on specific computational details for individual stages of design. Aids are needed to support information access and utilization during all stages of the design process. The application of human engineering and ergonomics data by designers is an increasingly challenging problem. Locating and understanding relevant information so that it can be applied to specific design issues is difficult given the abundance of existing and new data available. This is further complicated, in that the data are typically written to communicate research results to other human factors specialists. A new software product, Computer Aided Systems Human Engineering: Performance Visualization Subsystem (CASHE:PVS), is described which will assist the designer during the decision making process, maximizing creative and analytical abilities while minimizing costs due to design time and errors. The software contains several features to enhance the designer's ability to interpret and apply the human factors data available in the product. Phenomena descriptions in text, figures, and tables are combined with experiential information via simulations, animations, and audio. This provides the user a unique and rich understanding of human performance phenomena and how they relate to the design of new products.

A SYSTEMATIC COMPUTER-AIDED APPROACH TO LOW-NOISE AMPLIFIER DESIGN

2010 ◽  
Vol 19 (06) ◽  
pp. 1163-1179 ◽  
Author(s):  
NILADRI ROY ◽  
GARRETT MCCORMICK ◽  
VIJAY DEVABHAKTUNI ◽  
RABIN RAUT
Keyword(s):  
Computer Aided Design ◽  
Noise Figure ◽  
Design Procedure ◽  
Cmos Technology ◽  
Low Noise ◽  
Second Phase ◽  
Initial Design ◽  
Computer Aided ◽  
The Given ◽  
Lna Design

Low-noise amplifiers (LNAs) are critical to a wide variety of electronic circuits. In the design phase preceding fabrication, an LNA needs to be designed for a given set of specifications (e.g., gain, noise-figure, power consumption, etc.), which tend to be application-dependent. Typically, LNA design using commercial computer-aided design (CAD) tools can be human-intensive and requires a certain degree of expertise. This paper presents a systematic multi-phase CAD approach for the design of LNAs. In the first phase, a quick pre-analysis of the given LNA specifications is carried out leading to the selection of an appropriate LNA topology. In the second phase, an initial design of the LNA is generated employing an appropriate design procedure. Finally, the initial design is adjusted/fine-tuned so as to meet/exceed the given specifications, where necessary. The advantages of the proposed approach are shown through several practical LNA design examples in 0.18 μm CMOS technology.

Construction of Computer-Aided Design System for Shoes

2014 ◽  
Vol 644-650 ◽  
pp. 2647-2651
Author(s):  
Ming Hui Li ◽  
Xu Liu
Keyword(s):  
Computer Aided Design ◽  
Design Methods ◽  
Design Tool ◽  
Design System ◽  
Design Verification ◽  
Concept Design ◽  
Customer Needs ◽  
Design Performance ◽  
Computer Aided ◽  
Aided Design

Based on the shoes design methods and processes of analysis and summary, the computer-aided design as a design tool to intervene to determine concept , design performance and design verification stages. TO build a market to meet customer needs as the guiding ideology of the computer-aided design system shoes finally.

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