Potential Formulation for Aeroelastic Constraint Analysis in a Conceptual Design Environment

2002 ◽  
Author(s):  
Peter De Baets ◽  
Dimitri Mavris
Keyword(s):  
Conceptual Design ◽  
Design Environment ◽  
Potential Formulation ◽  
Constraint Analysis

A Form Verification System for the Conceptual Design of Complex Mechanical Systems

1993 ◽  
Author(s):  
Jonathan S. Colton ◽  
Mark P. Ouellette
Keyword(s):  
Conceptual Design ◽  
Process Model ◽  
Mechanical Systems ◽  
Data Representation ◽  
Design System ◽  
Complex Data ◽  
Graphical Display ◽  
Design Environment ◽  
Blackboard System ◽  
Complex Mechanical Systems

Abstract This paper presents a summary of research into the development and implementation of a domain independent, computer-based model for the conceptual design of complex mechanical systems (Ouellette, 1992). The creation of such a design model includes the integration of four major concepts: (1) The use of a graphical display for visualizing the conceptual design attributes; (2) The proper representation of the complex data and diverse knowledge required to design the system; (3) The integration of quality design methods into the conceptual design; and (4) The modeling of the conceptual design process as a mapping between functions and forms. Using the design of an automobile as a case study, a design environment was created which consisted of a distributed problem solving paradigm and a parametric graphical display. The requirements of the design problem with respect to data representation and design processing were evaluated and a process model was specified. The resulting vehicle design system consists of a tight integration between a blackboard system and a parametric design system. The completed system allows a designer to view graphical representations of the candidate conceptual designs that the blackboard system generates.

A conceptual design environment for micromechanisms

2002 ◽  
Author(s):  
T. Kiriyama ◽  
N. Nakajima ◽  
S. Yoshimura ◽  
S. Burgess ◽  
D. Moore ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Design Environment

Using Hybrid Heuristic Evaluation Method to Uncover the Conceptual Design Tasks Supported by a Holographic Display Based Truly 3D Virtual Design Environment

2008 ◽  
Author(s):  
Eliab Z. Opiyo ◽  
Imre Horva´th
Keyword(s):  
Conceptual Design ◽  
Evaluation Method ◽  
Direct Interaction ◽  
Experimental System ◽  
Virtual Object ◽  
Heuristic Evaluation ◽  
Literature Study ◽  
Design Environment ◽  
Virtual Design ◽  
Holographic Display

In the research reported in this paper, we investigated if a holographic display based truly 3D virtual design environment can effectively support 3D conceptual design. In this investigation, we applied heuristic evaluation method (Nielsen and Mack, 1994), but with some differences. We first conducted a literature study and compiled a comprehensive list of conceptual design tasks. We then asked selected experts to evaluate the experimental system and to indicate which conceptual design tasks can be supported. The experimental 3D design support environment consisted of a holographic display as a primary visualization device. In this experimental system, visual representation of information is presented aerially by using the holographic display, and viewers can interact with the displayed images by using the traditional input devices such as mouse and keyboard. The study established that this system can support only a handful of conceptual design tasks, in particular those requiring passive visualization such as review of the ergonomics of the product and aesthetics review. Other conceptual design tasks can be supported either partially or are not supported at all. This can be attributed in part to the shortcomings of the display, which include, for instance, poor resolution, inability of viewers to experience stereoscopic view all around the virtual object, lack of mechanism for enabling direct interaction between the viewer and the displayed virtual object, and lack of proper input mechanisms and user interfaces.

Optimal Electromagnetic Pump Design Based on Bond Graph Methods

2011 ◽  
Vol 308-310 ◽  
pp. 455-460
Author(s):  
Yu Long Bai ◽  
Yong Jie Ma ◽  
Hai Sha Gao ◽  
Shu Ping Wei
Keyword(s):  
Conceptual Design ◽  
Dynamic Systems ◽  
Bond Graph ◽  
Energy Structure ◽  
Design Environment ◽  
Design Problems ◽  
Pump Design ◽  
Electromagnetic Pump ◽  
Graphical Tool ◽  
The Common

For modeling and simulation of dynamic systems, bond graph methods could be served as a powerful tool to make a compete model and to test the performance of the model. Bond graph is an explicit graphical tool for capturing the common energy structure of systems. This paper deals with the conceptual design of an electrical-magnetic pump, which should be considered as the different domains design, such as hydraulic, electrical magnetic and thermal domain. After the realization of the basic pump functions, the model will be converted into a 20-sim design environment in which the configuration parameters of the pump can be adopted in order to optimize the choice of the better pump properties, such as efficiency, capacity and the power consumptions. It is seen that the bond graph method with the 20-sim software can solve the pump design problems effectively.

Aerodynamic Loads Prediction in an Integrated Computer-Based Conceptual Design Environment

2003 ◽  
Author(s):  
M. W. Goldstraw ◽  
C. Bil ◽  
C. Nicholson
Keyword(s):  
Conceptual Design ◽  
Aircraft Design ◽  
Automated System ◽  
Aerodynamic Load ◽  
Design Environment ◽  
Design Data ◽  
Conceptual Design Phase ◽  
Design Changes ◽  
Computer Based ◽  
Step Over

An important aspect of successful aircraft design is the concept of ‘right first time’, as any design changes downstream can be costly and may cause project delays. This is most applicable to the conceptual design phase. However, in the early stages of aircraft design, data is limited and prone to inaccuracies. Consequently, a design will typically traverse through a number of iterations, improving and refining with each step. Over the past 15 years, computer-based tools have become commonplace in aircraft design [1]. In general, most computer-based tools have been developed for the more advanced stages of the design process. For these tools to be useful in conceptual design, they must be user-friendly, interactive, and provide quick return times. A classic example is the aerodynamic load data required for structural design. Both are dependent on geometric parameters, which may still be subject to change. To complete the analysis within practical time constraints, a highly integrated and automated system is required [2, 3]. This paper presents such a system, developed using industry accepted software components including AutoCAD, VSAERO and MSC Nastran. This system allows an automatic, structured topology mesh to be generated from a basic three-view aircraft drawing, which inputs directly into VSAERO for loads calculations. The loads are subsequently transferred to MSC Patran as a pre-processor for structural analysis using MSC Nastran. If the result is unsatisfactory, the geometry or placement of structural components can easily be changed and the process repeated. The design environment was developed using FORTRAN90. The results of an application of this system to a simple wing, as well as a regional transport aircraft, are also presented.

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