PDA Based Anywhere — Anytime Collaborative CAD for Conceptual Design

2004 ◽  
Author(s):  
Zahed Siddique ◽  
Zhiqiang Chen
Keyword(s):  
Conceptual Design ◽  
Collaborative Design ◽  
Geometric Modeling ◽  
Concept Development ◽  
Handheld Computers ◽  
Design Stage ◽  
Design Environment ◽  
Agent Based ◽  
Wired Networks ◽  
Access Information

Advances in handheld computers are providing a device that is pocket-sized, ultra-light, and wireless. The new handheld computers are providing an opportunity to not only access information from electronic repositories, but also to run software to perform activities and to collaborate with experts “anywhere/anytime”. The confluence of ubiquitous wireless networking and powerful handheld computers provide a powerful technology base for providing an environment, which can support distributed and mobile usage and enhance collaboration during different product design and development stages. Graphics, which include geometric modeling, is one of the most widely used methods of communication during the design phase. In this paper we present a framework and tool to provide CAD support during conceptual design stage for a distributed and collaborative design environment. The HCAD framework, is based on a combination of handheld computers and servers, interconnected by wireless and wired networks. An agent based approach is utilized to allow collaboration during concept development. The applicability of the HCAD framework is demonstrated through the development of a concept for an automotive center console.

Conceptual Design of Kenaf Polymer Composites Automotive Spoiler Using TRIZ and Morphology Chart Methods

2015 ◽  
Vol 761 ◽  
pp. 63-67 ◽  
Author(s):  
Muhd Ridzuan Mansor ◽  
S.M. Sapuan ◽  
A. Hambali ◽  
Edi Syam Zainudin ◽  
A.A. Nuraini
Keyword(s):  
Polymer Composites ◽  
Conceptual Design ◽  
New Product Development ◽  
Design Method ◽  
Idea Generation ◽  
Development Stage ◽  
Concept Development ◽  
Design Stage ◽  
Concept Design ◽  
Solution Strategies

Spoilers are part of an automotive exterior bodywork system that acts to create additional down force for higher traction. In this paper, a new conceptual design of automotive spoiler component using kenaf polymer composites was developed using integrated TRIZ and morphology chart design method. The aim is to enable direct application of kenaf polymer composites to the spoiler design to achieve better environmental performance of the component while maintaining the required structural strength for safe and functional operation. The overall process involved two major stages, which are the idea generation and concept development. TRIZ method was applied in the idea generation stage where specific solution strategies for the design were created. In the concept development stage, the specific TRIZ solution strategies obtained were later refined into relevant alternative system elements using Morphology chart method. Finally, a new conceptual design of an automotive spoiler was developed using the combination of the identified system elements. The integrated TRIZ and morphology chart method were found to be new tools that can be used effectively in the concept design stage, especially in cases where direct material substitution is given the main focus for the new product development.

Behavioral Mechanism: Advancing a Design State with Multi-Agents Coordinating

2011 ◽  
Vol 148-149 ◽  
pp. 789-794
Author(s):  
Chiung Hui Chen
Keyword(s):  
Collaborative Design ◽  
Design Environment ◽  
Script Language ◽  
Agent Based ◽  
Behavioral Mechanism ◽  
Support Tools ◽  
Multi Agent ◽  
Design Objects ◽  
New Generation ◽  
Multi Agents

For the past two decades, several design support tools have been developed for both research and commercial purposes. Most are stand-alone tools; few are comprehensive or collaborative design environments. Agent technology is an emerging field and agent-based application design is still a pioneering discipline. The agent-oriented design is a new generation method of programming design that mainly uses the script language as a basis for development and that is suitable to design the multi-agent application system. Some tools have adopted the notion of computational agency. In the urban design environment, suppose design objects such as pavements, lamps and plazas can look after themselves and have its own behavioral mechanism, where would a design object acquire the knowledge that allows it to interact intelligently? This paper investigates the question through the notion of objects as agents in design and the purpose of this research is to propose a coordinative mechanism of agents of spatial objects by establishing this design agent.

A Collaborative Design-by-Sketching Conceptual Design Tool for Multimedia Application Development

2011 ◽  
pp. 231-238
Author(s):  
K.-Y. R. Li ◽  
T. Ong ◽  
R. J. Willis
Keyword(s):  
Conceptual Design ◽  
Collaborative Design ◽  
User Involvement ◽  
Cost Effective ◽  
Multimedia Applications ◽  
Design Tool ◽  
Design Stage ◽  
Computer Assisted ◽  
Multimedia Technology ◽  
Application Development

Multimedia technology is advancing at a significant rate and is now revolutionizing the way in which computers are being used in business. Multimedia technology can only benefit a company when applications are properly developed to exploit technology, in order to enhance the company’s operation. Unfortunately, to develop high-quality, cost-effective multimedia applications is not an easy task. There are many issues and challenges that developers are currently facing. Issues such as the difficulties in defining the project scope, communication difficulties amongst the development team, and estimate difficulties, making the development process both labour-intensive and time-consuming (Li and Willis, 1998). Sponsors of multimedia projects are often unsure of their requirements at the start of the project. Sponsor/user involvement in the abstract (conceptual) design stage of the project is therefore important. This chapter presents a computer assisted design-by-sketching tool to help with the conceptual design of multimedia applications. The tool helps sponsors to define their requirement incrementally and the design team to prototype their ideas interactively and collaboratively. It assists the developer to define the balance between consistency, which helps the readers (users) to understand the overall structure, and diversity, which gives freshness to the design. This tool will also enable re-usability of the designed components in future projects and maintainability of the application that it has developed.

Geometric Modeling and Collaborative Design in a Multi-Modal Multi-Sensory Virtual Environment

2000 ◽  
Author(s):  
Rajarathinam Arangarasan ◽  
Rajit Gadh
Keyword(s):  
Virtual Environment ◽  
Design Process ◽  
Collaborative Design ◽  
Computer Aided Design ◽  
Geometric Modeling ◽  
Shape Modeling ◽  
Design System ◽  
Design Environment ◽  
Virtual Design ◽  
Design Cycle

Abstract Shape modeling plays a vital role in the design process but often it is the most tedious task in the whole design cycle. In recent years the Computer Aided Design (CAD) industry has evolved through a number of advances and developments in design methodology. However, modeling in these CAD systems requires expertise and in-depth understanding of the modeling process, user interface and the CAD system itself, resulting in increased design cycle time. To overcome these problems a new methodology and a system called “Detailed Virtual Design System” (DVDS) has been developed for detailed shape modeling in a multi-modal, multi-sensory Virtual Environment (VE). This system provides an intuitive and natural way of designing using hand motions, gestures and voice commands. Due to the lack of effective collaborative design, visualization and analysis tools, designers spend a considerable amount of time and effort in the group discussion during design process. To enable multiple designers to effectively and efficiently collaborate in a design environment, framework of a collaborative virtual environment, called “Virtual Environment to Virtual Environment” (V2V), has been discussed. This framework allows same site and remote site multi-modal, multi-sensory immersive interface between designers.

A Web-Based Collaborative Evaluation Platform for Mechanical Conceptual Design

2010 ◽  
Vol 37-38 ◽  
pp. 68-72
Author(s):  
Mei Yan Wang ◽  
Lian Guan Shen ◽  
Yi Min Deng
Keyword(s):  
Conceptual Design ◽  
Collaborative Design ◽  
Evaluation Process ◽  
Search Space ◽  
Design Evaluation ◽  
Design Environment ◽  
Web Based ◽  
Design Concepts ◽  
Evaluation Platform ◽  
Collaborative Evaluation

In conceptual design, a number of design concepts and alternatives would be generated. These concepts and alternatives usually need to be evaluated to reduce the search space. However, it is not easy for the designers to determine which alternative is better, especially in the design environment where multiple designers might be involved. Current researches mainly focused on the evaluation models, but rarely provide the integrated tools to assist the evaluation process. To address this problem, we propose a web-based collaborative design evaluation platform and two evaluation principles for different evaluation situations. A design case is used to illustrate the evaluation process, where it is necessary for the designers to select a working phenomenon for the “generate force” subfunction of a nailing machine.

scholarly journals A Port-Based Agent Approach to Guiding Concept Generation for Customizing Modular Varieties

2010 ◽  
Author(s):  
Dongxing Cao ◽  
Karthik Ramani ◽  
Ming Wang Fu ◽  
Runli Zhang
Keyword(s):  
Product Development ◽  
Conceptual Design ◽  
Design Process ◽  
Collaborative Design ◽  
Product Configuration ◽  
Design Stage ◽  
Concept Generation ◽  
Product Decomposition ◽  
Solution Generation ◽  
New Concepts

As the description of design requirements at the earlier design stage is inaccurate and vague, it is difficult to figure out functional structure of a product and make sense product configuration. Therefore, it plays an important role to formally represent the process of design for product development in the conceptual design stage. Furthermore, port, as the location of intended interaction, is crucial to capture component concept and realize conceptual design for multi-solution generation. Agent is considered as an effective approach to collaboratively implementing design problem solving and reasoning. Combining both port and agent may be employed to generate new concepts of the product in order to customize product scheme varieties. In this paper, the product module attributes are firstly described. The objective is to implement modeling of design process for obtaining system new concepts to guide multi-solution generation. Secondly, an effective approach to decomposing design process is presented to describe the process of structure generations and product decomposition by formal representation. According to properties of modularity for product development and component connections, we can calculate the number of component connections and density of components. In addition, product module division and coupling degree analysis are conducted, and coupling degrees are calculated by considering the correspondence ratio and the cluster independence. A port-based knowledge building process is described for functional modeling. A port-agent collaborative design framework is given and describes different agent functions to help designers to obtain new design schemes. Finally, a case study is presented to describe the modeling process of conceptual design.

Modeling Framework for a Consistent Integration of Geometry Knowledge During Conceptual Design

2019 ◽  
Vol 19 (2) ◽  
Author(s):  
Romain Barbedienne ◽  
Olivia Penas ◽  
Jean-Yves Choley ◽  
Peter Hehenberger
Keyword(s):  
Conceptual Design ◽  
Collaborative Design ◽  
Computer Aided Design ◽  
System Modeling ◽  
Data Consistency ◽  
Design Stage ◽  
Modeling Framework ◽  
Physical Constraints ◽  
3D Cad ◽  
Architecture Modeling

This paper proposes a modeling framework for a consistent geometrical data link between a system model and a spatial architecture modeling in a 3D computer-aided design (CAD) environment, with a model-based system engineering (MBSE) approach. Our approach, focused on the conceptual design stage, for the evaluation of 3D architecture under physical constraints, aims at improving the system design by ensuring data consistency during collaborative design. This model transformation platform will ensure a seamless geometrical consistency and traceability from the requirements to the further design stages. The theoretical formalization of our approach presents a consistent integration of geometry knowledge all along the conceptual design. Then, the corresponding modeling platform implementation between the developed system modeling language (SysML) geometrical extension and a 3D CAD tool is described before detailing an application on a conveyor case study.

Agent-based collaborative design system and conflict resolution based on a case-based reasoning approach

2002 ◽  
Vol 16 (2) ◽  
pp. 93-102 ◽  
Author(s):  
KYUNG HO LEE ◽  
KYU-YEUL LEE
Keyword(s):  
Conflict Resolution ◽  
Collaborative Design ◽  
Ship Design ◽  
Design Stage ◽  
Design System ◽  
Case Based Reasoning ◽  
Agent Based ◽  
Conflict Resolution Strategy ◽  
Resolution Strategy ◽  
Case Based

Under the concept of a global economy, enterprises are assigning design and production environments around the world in different areas. A serious issue of information exchange emerges as companies use traditional hardware and very distinct software appropriate to their field of expertise. To overcome the problem of low productivity due to the interruption of information, the concept of simultaneous engineering and concurrent design becomes very significant. In this article an agent-based ship design system is developed to support cooperation in distributed ship design environments. Above all, the conflicts that occur while sharing knowledge in the system must be resolved. One approach is to adopt a case-based conflict resolution strategy formulated to resolve current conflict on the basis of similar previously resolved cases in agent-based collaborative design system environments. To do this, conflict cases that occur in the initial ship design stage are extracted. On the basis of the extracted cases, a case base is constructed. In addition, a conflict resolution handler located in the superagent called a facilitator, an agent to control other subagents, is developed to treat conflict problems effectively by case-based reasoning. The case-based conflict resolution strategy is evaluated by applying it to a collaborative design process in the initial ship design stage, especially the machinery outfitting design, the preliminary design, the hullform design, and the structural design. Through the help of the collaboration of the design agents, the facilitator, the conflict resolution handler, and the case-based system, a designer can make decisions based on similar previously resolved cases.

Multi-Objective Design Problem of Tire Wear and Visualization of Its Pareto Solutions2

2006 ◽  
Vol 34 (3) ◽  
pp. 170-194 ◽  
Author(s):  
M. Koishi ◽  
Z. Shida
Keyword(s):  
Inverse Problems ◽  
Conceptual Design ◽  
Dimensional Space ◽  
Design Stage ◽  
Objective Functions ◽  
Pareto Solutions ◽  
Design Problems ◽  
Multi Objective ◽  
Design Engineers ◽  
Design Variables

Abstract Since tires carry out many functions and many of them have tradeoffs, it is important to find the combination of design variables that satisfy well-balanced performance in conceptual design stage. To find a good design of tires is to solve the multi-objective design problems, i.e., inverse problems. However, due to the lack of suitable solution techniques, such problems are converted into a single-objective optimization problem before being solved. Therefore, it is difficult to find the Pareto solutions of multi-objective design problems of tires. Recently, multi-objective evolutionary algorithms have become popular in many fields to find the Pareto solutions. In this paper, we propose a design procedure to solve multi-objective design problems as the comprehensive solver of inverse problems. At first, a multi-objective genetic algorithm (MOGA) is employed to find the Pareto solutions of tire performance, which are in multi-dimensional space of objective functions. Response surface method is also used to evaluate objective functions in the optimization process and can reduce CPU time dramatically. In addition, a self-organizing map (SOM) proposed by Kohonen is used to map Pareto solutions from high-dimensional objective space onto two-dimensional space. Using SOM, design engineers see easily the Pareto solutions of tire performance and can find suitable design plans. The SOM can be considered as an inverse function that defines the relation between Pareto solutions and design variables. To demonstrate the procedure, tire tread design is conducted. The objective of design is to improve uneven wear and wear life for both the front tire and the rear tire of a passenger car. Wear performance is evaluated by finite element analysis (FEA). Response surface is obtained by the design of experiments and FEA. Using both MOGA and SOM, we obtain a map of Pareto solutions. We can find suitable design plans that satisfy well-balanced performance on the map called “multi-performance map.” It helps tire design engineers to make their decision in conceptual design stage.

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