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.

Port-Based Ontology Modeling for Product Conceptual Design

2008 ◽  
Author(s):  
Dongxing Cao ◽  
Ming Wang Fu ◽  
Yongmao Gu ◽  
Haipeng Jia
Keyword(s):  
Conceptual Design ◽  
Product Knowledge ◽  
System Configuration ◽  
Modeling Framework ◽  
Knowledge Framework ◽  
Ontology Language ◽  
Ontology Modeling ◽  
Comprehensive Knowledge ◽  
Ontology Repository ◽  
Important Means

Ontology has been known as an important means to represent design knowledge in product development, however, most ontology creation has not yet been systematically carried out. Port, as the location of intended interaction between a component and its enviornment, plays an important role in product conceptual design. It constitutes the interface of a component and defines its boundary. This paper introduces an approach, it is convenient to abstractly represent the intended exchange of signals, energy and/or material, and creat and manage port-based domain ontology, to port-based ontology modeling (PBOM) for product conceptual design. In this paper, port concept and port functional description through using natural language are first presented and their semantic synthesis is used to describe port ontology. Secondly, an ontology repository which contains the assorted primitive concepts and primitive knowledge to map the component connections and interactions is built. Meanwhile a model of port-based multi-views which contains functional view, behavior view and configuration view is articulated, and the attributes and taxonomy of ports in a hierarchy are presented. 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 constructed to describe system configuration. Furthermore, a formal knowledge framework to manage comprehensive knowledge is proposed, which could help designers create, edit, organize, represent and visualize product knowledge. Finally, a revised tape case is employed to validate the efficiency of the port ontology for product conceptual design and illustrate its application.

Intelligent Design of Mechanical Products Based on Function-Knowledge-Structure

2012 ◽  
Vol 605-607 ◽  
pp. 283-287
Author(s):  
Fei Cao
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Correlation Matrix ◽  
Intelligent Design ◽  
Fitness Function ◽  
Knowledge Structure ◽  
Structure Information ◽  
Gene Coding ◽  
Mechanical Products

Mechanical products design process always focuses on the description of product structure information, while lacking of the expression and application of function and knowledge information. This paper proposes an intelligent design approach of mechanical products based on Function-Knowledge-Structure (FKS). The gene coding of function, knowledge and structure are constructed, and the correlation matrix of the Functional-Structure (FS) and Knowledge-Structure (KS) are introduced to calculate the fitness function. A case study of the conceptual design on bag forming, filling and sealing machine shows the intelligent design process based on FKS.

Forging a Geometric Link Between Function-Based Design and DfM

2002 ◽  
Author(s):  
Manish Verma ◽  
Hui Dong ◽  
William H. Wood
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Design Stage ◽  
Direct Connection ◽  
Functional Modeling ◽  
Small Space ◽  
Design Decisions ◽  
Design For Manufacture ◽  
Part Geometry ◽  
Conceptual Design Stage

Design for Manufacture (DfM) tends to explore only a small space of possible designs toward improving manufacturability. By focusing primarily on detailed geometry, DfM tends to recommend incremental changes. This paper presents a methodology that begins at the conceptual design stage, applying functional modeling to the generation of design configurations. These functional abstractions are merged with real part geometry toward generating potentially manufacturable design skeletons. The direct connection from function to manufacturable form afforded by this method allows the designer to make better-informed design decisions at the earliest stages of the design process.

Partitioning Knowledge for Generative Configuration Design

2003 ◽  
Author(s):  
Hai Shi ◽  
Linda Schmidt
Keyword(s):  
Conceptual Design ◽  
Design Tool ◽  
Design Stage ◽  
Configuration Design ◽  
Computational Load ◽  
Conceptual Design Stage ◽  
Chair Design ◽  
Office Chair

Designers and design researchers both agree that developing many feasible alternatives at the conceptual design stage is useful. In this paper we introduce generative configuration design (GCD) for conceptual design. We provide a partition of knowledge accessed during GCD and use the partitioned knowledge foundation to compare design tool architectures so that computational improvements can be made. We present an improved architecture for a GCD algorithm and implement it as a tool for office chair design. Subsequent examples show tradeoffs between computational load and design variety when applying constraints for behavior testing.

An Innovative Channel Design of the Freezing Chucker

2006 ◽  
Author(s):  
Rong-Yuan Jou
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Design Stage ◽  
Plate Surface ◽  
Channel Design ◽  
Typical Structure ◽  
Design Work ◽  
Detailed Design ◽  
Embodiment Design ◽  
Final Design

A freezing chucker is a clamp-less mechanism of fixture for easy broken egg-shell, clay, and other ferrous/nonferrous materials. Typical structure of this mechanism includes a top plate for freezing workpieces, a body with specially designed channels for the coolant flows, and a bottom plate to fasten on the table of other machine. Just by a small amount of liquids on the top surface and by rapidly cool down to 253K, parts can be frozen stationary on the top plate surface and can conduct precision machining on it. There are four steps to design a new freeze chucker by the engineering design process: planning and clarifying the task; conceptual design; embodiment design; detailed design. Some useful tools from the Quality Function Deployment (QFD) technique and the Theory of Inventive Problem Solving (TRIZ) method are used in this design process. Eight concept designs are generated by the conceptual design work and the final design of channel with transverse ribs is selected by decision matrix technique during embodiment design and detailed design stage. This final design is evaluated by numerical modeling of the COMSOL MULTIPHYSICS 3.2 finite-element based package. Performances such as the temperature distribution of top-plate surface temperature and the lowest temperature of a freezing chucker are shown. Numerical results show the success of the innovative channel design by this inventive design process using TRIZ methodology.

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.

Virtual generative BIM workspace for maximising AEC conceptual design innovation

2015 ◽  
Vol 15 (1) ◽  
pp. 24-41 ◽  
Author(s):  
Sepehr Abrishami ◽  
Jack Goulding ◽  
Farzad Pour Rahimian ◽  
Abdul Ganah
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Architectural Design ◽  
Computational Design ◽  
Design Stage ◽  
Generative Design ◽  
Content Type ◽  
Extant Literature ◽  
Support Mechanisms ◽  
Aec Industry

Purpose – The purpose of this paper is to find optimal solutions for conceptual design automation, which can be integrated with Building Information Modelling (BIM) support for construction automation. Problems relating ostensibly to failures in computational support for the conceptual design stage are well-documented in extant literature. These failures are multifarious and significant, with several deficiencies being acknowledged in the Architecture, Engineering, and Construction (AEC) industry. Whilst acknowledging this, extant literature has highlighted the importance of computational design in the AEC industry; and failures in this area include the need to strengthen the congruent links and support mechanisms in order to exploit the opportunities presented by new computational design methods. Given this, it is postulated that the application of generative design could enhance the design experience by assisting designers with the iterative generation of alternatives and parameterisation (change management) processes. Moreover, as BIM applications are increasingly providing comprehensive support for modelling and management, then additional synergies could be examined for further exploitation. Design/methodology/approach – This paper focusses on the potential for developing an interactive BIM environment that purposefully adopts generative design as a method of computational design for the early design stages. This research facilitates the automation of the conceptual architectural design process, using BIM as the central conduit for enhancing the integration of the whole building design process (including design interfaces). This approach is designed to improve designers’ cognition and collaboration during the conceptual architectural design process. Findings – This paper evaluates the existing methods and decision support mechanisms, and it introduces the potential of combining different concepts into a single environment (generative design/BIM). Originality/value – This research is novel, in that it critically appraises virtual generative workspaces using BIM as the central conduit. The outcome and intervention of this research forms a theoretical basis for the development of a “proof of concept” prototype, which actively engages generative design into a single dynamic BIM environment to support the early conceptual design process.

Towards Computer-Aided Conceptual Design of Mechatronic Devices With Multiple Interaction-States

2005 ◽  
Author(s):  
Changxin Xu ◽  
Satyandra K. Gupta ◽  
Zhiyang Yao ◽  
Michael Gruninger ◽  
Ram Sriram
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
State Transition ◽  
Software Tools ◽  
Next Generation ◽  
Modeling Framework ◽  
Computer Aided ◽  
Multiple Interaction ◽  
Device Operation

In multiple interaction-state mechatronic devices the interactions between elements of use-environment and elements of the device can have different qualitative structures depending upon the modes of the device operation and the states of the use-environment. This paper describes a modeling framework to support conceptual design of such devices using state transition diagrams. We define the primitives and operators needed in the modeling framework, and illustrate the conceptual design process using these primitives and operators. We believe that the framework described in this paper will provide the underlying foundations for constructing the next generation software tools for the conceptual design of mechatronic devices.

Application of Topology Optimization in Product Design and Manufacturing

2011 ◽  
Author(s):  
Ihab Ragai ◽  
Harry Tempelman ◽  
David Kirby
Keyword(s):  
Topology Optimization ◽  
Conceptual Design ◽  
Design Process ◽  
Development Time ◽  
Optimization Problems ◽  
Mathematical Formulation ◽  
Design Stage ◽  
Conceptual Design Stage ◽  
Structural Design Optimization ◽  
The Cost

This paper deals with the utilization of topology optimization in the design process. Topology optimization is considered the most challenging task in the structural design optimization problems because the general layout of the structure is not known; however, implementing it in the conceptual design stage has proven to reduce the cost and development time. In this paper, the design process is briefly discussed emphasizing the use of topology optimization in the conceptual design stage. Also, the mathematical formulation for topology optimization with material density contours is presented. Furthermore, two industrial case studies, related to off-road mining and construction trucks, are discussed where the use of topology optimization has proven to dramatically improve an existing design and significantly decrease the development time of a new design.

Conceptual Design of Tool Storage Based on the Divergent Tree Method

2002 ◽  
Author(s):  
Yanwei Zhao ◽  
Wanliang Wang ◽  
Yingli Zhang ◽  
Zhengchu Wang
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Divergent Thinking ◽  
Design System ◽  
Machining Center ◽  
Computer Aided ◽  
Mechanical Products ◽  
Intelligent Computer ◽  
Tree Method

The divergent tree method was adopted in this paper, and an illustrative example of tool storage design in the machining center was given to describe the divergent thinking in the conceptual design process of mechanical products. Firstly general divergent tree method was applied to get various schemes of storage, then the primary schemes were achieved by using the measure of known characteristics, finally the excellent degree appraisal approach was applied to find out the optimum one. In addition, an intelligent computer aided conceptual design system of tool storage based on the divergent tree method and excellent degree appraisal approach was demonstrated in this paper.

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