Study on Modeling of Growth Conceptual Design

2010 ◽  
Vol 44-47 ◽  
pp. 1883-1888
Author(s):  
Pei Gang Li ◽  
Xian Ying Feng ◽  
Ya Qing Song
Keyword(s):  
Conceptual Design ◽  
Design Stage ◽  
Case Based Reasoning ◽  
Product Knowledge ◽  
Knowledge Model ◽  
Biological Growth ◽  
Mechanical Products ◽  
Mapping Process ◽  
Generalized Coordinate ◽  
Case Based

Based on decomposition and reconstruction principle, by analyzing the limit essence of rigid body in generalized coordinate system, the paper proposes growth conceptual design model from function to structure. It applies the mechanism of biological growth into conceptual design of products, realizes the stable mapping from function to structure, and also solves the issues of multi-solutions, uncertainty, etc, existing in the mapping process from function to structure of mechanical products in conceptual design stage. Establish the product knowledge model supporting product conceptual design, use the Case-Based reasoning (CBR) technology into entities match and verify it by case, which provides a new idea for the conceptual design of computer aided product.

An Approach to Computer Aided Conceptual Design of the Mechanical Products With Middle Complex Level

2001 ◽  
Author(s):  
Cheng Xu ◽  
Yongjuan Wang ◽  
Changyi Liu
Keyword(s):  
Conceptual Design ◽  
Comprehensive Evaluation ◽  
Object Oriented ◽  
Parametric Model ◽  
Case Based Reasoning ◽  
Software System ◽  
Rule Based ◽  
Mechanical Products ◽  
Prototype Software ◽  
Case Based

Abstract An approach synthesized with comprehensive evaluation & decision, rule-based reasoning, case-based reasoning and 3D parametric model are proposed to solve the problems of automation of the conceptual design of the mechanical products with middle complex level. A prototype software system for automatic rifle layout design was implemented using the object-oriented language — C++ based on this approach. The results running the prototype software system can well meet the demands of conceptual design of these complex level products.

An extended case-based reasoning method and corresponding product design process

2019 ◽  
Vol 233 (19-20) ◽  
pp. 6673-6688
Author(s):  
Song Li ◽  
Yan Li ◽  
Wenqiang Li ◽  
Chen Chen
Keyword(s):  
Product Design ◽  
Conceptual Design ◽  
Design Process ◽  
Design Solution ◽  
Case Based Reasoning ◽  
Creative Design ◽  
Knowledge Model ◽  
Product Design Process ◽  
Design Ideas ◽  
Case Based

During product design process, conventional case-based reasoning (CBR) has shown significant applications in coping with new problems by recalling and reusing solutions in old context. However, conventional CBR still lacks effective methods to assist designers in generating creative design solutions of identified problems during modification stage. To make up for this deficiency, an extended CBR (ECBR) method characterized by two retrieval stages is proposed in this paper. The former retrieval stage is aimed to retrieve the most similar source case for design reusing, and the latter one is designed to assist designers in searching for relevant function units to generate creative design ideas for final design solution. A five-tuple knowledge model of product case is presented. It includes both specific design information for design reusing and abstract function units for generating creative design ideas. To effectively organize these case information, a hierarchy knowledge model of case base is established. It consists of case type layer, product case layer, and function unit layer. A corresponding retrieval strategy is presented to deal with different retrieval goals. To improve the performance of ECBR method in modification stage, the substance-attribute-function-cause analysis model and TRIZ tools are integrated together to aid problem analysis and problem-solving of retrieved product case. Finally, a new product conceptual design process is proposed based on ECBR method and the conceptual design of a smokeless barbecue equipment is employed as an example to verify the feasibility and effectiveness of ECBR method.

Using the points of large cases

1993 ◽  
Vol 7 (2) ◽  
pp. 87-96 ◽  
Author(s):  
Eric Domeshek ◽  
Janet Kolodner
Keyword(s):  
Conceptual Design ◽  
Strategic Choice ◽  
Complex Case ◽  
Case Based Reasoning ◽  
Design Case ◽  
Case Based ◽  
Open Issues

We believe that case-based reasoning (CBR) will prove applicable to design, at least in part, as we have seen designers making extensive use of past cases. Construction of useful systems, however, requires the resolution of many open issues. In this paper we consider three issues in particular: (1) What sort of content should be captured in a design case? (2) How should the content of a complex case be segmented into chunks for use? (3) How should the resulting chunks be indexed for retrieval? These are among the issues we are seeking to address through construction of Archie-II, a case-based aid for conceptual design in architecture. In addition to our approaches to these issues, this paper also discusses our strategic choice to build a design aiding system as opposed to a system that generates designs on its own.

Kinematic Simulation Using Qualitative Mechanism Models

1995 ◽  
Author(s):  
Jihong Liu ◽  
Masanori Igoshi ◽  
Eiji Arai
Keyword(s):  
Conceptual Design ◽  
Spatial Relation ◽  
Spatial Relations ◽  
Quantitative Information ◽  
Design Stage ◽  
Kinematic Simulation ◽  
Conceptual Design Stage ◽  
Support Tools ◽  
Mechanical Products ◽  
Structural Descriptions

Abstract When trying to use computers to aid designers at the conceptual design stage, it becomes clear that many traditional methods and support tools are incompetent because they mainly deal with sufficient and quantitative information. However, at the conceptual design stage, information is insufficient and mostly qualitative. The focus of this paper is on representing and reasoning about the geometry and motion of physical objects for mechanical conceptual design. A new concept, called qualitative spatial relation space (QSRS), is introduced to describe mechanisms of mechanical products by referring to the qualitative spatial relations between their components. A qualitative kinematic simulation system has been implemented to enable verification of functions of products at the conceptual design stage. The system derives motions of components caused by other components’ specified motions from the qualitative structural descriptions of products, and puts brief and comprehensible functional interpretations of products.

scholarly journals Research on new creative conceptual design system using adapted case-based reasoning technique

2016 ◽  
Vol 31 (1) ◽  
pp. 16-29 ◽  
Author(s):  
Jie Hu ◽  
Jin Ma ◽  
Jin-Feng Feng ◽  
Ying-Hong Peng
Keyword(s):  
Knowledge Representation ◽  
Conceptual Design ◽  
Design System ◽  
Design Knowledge ◽  
Case Based Reasoning ◽  
Pump Design ◽  
Design Models ◽  
Representation Model ◽  
Previous Design ◽  
Case Based

AbstractCreative conceptual design requires significant previous design knowledge. Case-based reasoning enables learning from previous design experience and has a great potential in supporting creative conceptual design by means of seeking to retrieve, reuse, and revise most appropriate cases to generate inspired solutions. However, traditional case-based reasoning based creative conceptual design models focus on design strategies research, pay little attention to defining a consistent knowledge representation model, and neglect the research to make various types of knowledge retrieval tractable. Faced with such drawbacks, the expected design knowledge cannot be retrieved properly, especially in cases where multidisciplinary knowledge is concerned or exact query terms are absent. In order to solve these issues, this paper presents a combined approach to support creative conceptual design process. First, function–behavior–structure knowledge cell is introduced as a unified consistent design knowledge representation model. Second, a hybrid similarity measure is proposed to increase the overall possibility of obtaining useful design knowledge by considering semantic understanding ability. Third, an intelligent creative conceptual design system has been developed with a case study of a novel insulin pump design to demonstrate its usage, and two experiments are conducted to evaluate the performance of the proposed approach. The results show that the proposed approach outperforms other case-based reasoning based creative conceptual design models.

The CBR-Based Green Design Evaluation System for Mechanical Products

2010 ◽  
Vol 139-141 ◽  
pp. 1388-1391
Author(s):  
Qin Zhou Niu ◽  
Yan Fei Fu ◽  
Zhi Guo Wang ◽  
Feng Hong
Keyword(s):  
Evaluation System ◽  
Indicator System ◽  
Green Design ◽  
Design Evaluation ◽  
Case Based Reasoning ◽  
Evaluation Indicator ◽  
Mechanical Products ◽  
Evaluation Indicator System ◽  
Case Based

In order to protect the environment and save resources, as well as to improve the green design level of mechanical products, an evaluation indicator system for green design is called to be established. After Referencing the existing evaluation principles and objectives to propose green design evaluation indicator system of mechanical products, the idea of case-based reasoning (CBR) is used to construct the indicators library. Also, the method of cluster is utilized to subdivide the library, aiming to optimize the indicator library and to improve the accuracy of evaluation in the process of constructing the indicator library. Finally, a CBR-based indicator library was constructed.

A Port-Based Approach to Configuration Design of Mechanical Products

2008 ◽  
Vol 44-46 ◽  
pp. 471-478
Author(s):  
Dong Xing Cao ◽  
Xiao Jun Zhang ◽  
Q.L. Jia ◽  
L.X. Nan
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Design Stage ◽  
Configuration Design ◽  
System Configuration ◽  
Modeling Framework ◽  
Functional Description ◽  
Ontology Language ◽  
Mechanical Products ◽  
Ontology Repository

Configuration design lies in the later stage of the conceptual design. It affects the downstream of design process and decides product structure. Therefore, it is necessary to pursue an approach to support such design stage activities. Port, as the location of intended interaction, plays an important role in the configuration design, which abstractly represents the intended exchange of signals, energy or material in a convenient way. Ontology is an unambiguous and flexible semantic specification corresponding entities, and it can effectively describe the function of port. In this paper, we firstly give port concept and port functional description, and their semantic synthesis is used to describe port ontology. Second, we build an ontology repository which contains the assorted primitive concepts and primitive knowledge to map the component connections and interactions. Meanwhile we provide a model of port-based multi-views which contains functional view, behavior view and configuration view, and gives the attributes and taxonomy of ports. Next, a port-based ontology language (PBOL) is described to represent the process of port ontology refinement, and a port-based FBS modeling framework is presented to describe system configuration. Finally, a revised tape case is given to show the application of the port-based ontology.

Function and behavior representation in conceptual mechanical design

2002 ◽  
Vol 16 (5) ◽  
pp. 343-362 ◽  
Author(s):  
Y.-M. DENG
Keyword(s):  
Conceptual Design ◽  
Mechanical Design ◽  
Input Output ◽  
Action Function ◽  
Design Synthesis ◽  
Design Concepts ◽  
Function Decomposition ◽  
Mechanical Products ◽  
Mapping Process ◽  
And Behavior

Conceptual design seeks to deliver design concepts that implement desired functions. Function and behavior are two dominant terms used in the research of this design phase. However, there are still some fundamental ambiguities and confusions over their representation, which have greatly hindered the interchange of research ideas and the development of design synthesis strategies. For conceptual design of mechanical products specifically, this paper attempts to clarify these ambiguities. It classifies function as purpose function and action function and relates them to the different levels of design hierarchy and abstraction. It distinguishes between semantic and syntactic representations of function and behavior and summarizes basic representation schemes. It also proposes an input–output action transformation scheme for semantic function representation and an input–output flow of action scheme for semantic behavior representation. Based on these discoveries, a refined framework is proposed for conceptual mechanical product design, where a function–decomposition–mapping process is elaborated to demonstrate the necessities and usefulness of the presented work.

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