Multibody System for Virtual Prototyping

2009 ◽  
Author(s):  
Kevin Chang ◽  
Christopher Johnson
Keyword(s):  
Product Development ◽  
Modeling And Simulation ◽  
Virtual Environment ◽  
Interface Design ◽  
Multibody System ◽  
Virtual Prototyping ◽  
Electrical Power ◽  
Product Development Process ◽  
Vehicle Design ◽  
Human Factor Engineering

The Ground Systems (GS) business unit of BAE Systems Inc. develops and manufactures major ground combat vehicles for military. Because the development of ground-based combat vehicles is a complex process, it requires the coordinated effort of multiple engineering disciplines that include human factor engineering (HFE), product design, as well as modeling and simulation (M&S), to perform design analysis and to predict vehicle performance. In order to increase engineering efficiency and to reduce product development costs, GS has developed a virtual prototyping technology. Using this technology, it enables GS to perform vehicle design and requirement validation in a virtual environment prior to expensive and time consuming hardware prototyping. This technology also enables GS customers to be more involved in the product development cycle and makes the product development process more customer-centric. The development of this virtual environment requires integration of various technologies, including multibody dynamics, 3D computer graphics, networking, modeling and simulation, and the human-machine interface design. This paper describes how multibody system simulations are used in this virtual environment to support GS vehicle design in the areas of crew visibility studies, crew station design, vehicle interference checking, and electrical power management simulation.

An Architecture for VR-Based Virtual Prototyping of Human-Operated Systems

1998 ◽  
Author(s):  
Sankar Jayaram ◽  
Scott R. Angster ◽  
Sanjay Gowda ◽  
Uma Jayaram ◽  
Robert R. Kreitzer
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Virtual Prototyping ◽  
Product Development Process ◽  
Open Architecture ◽  
Cad System ◽  
Human Modeling ◽  
Cad Cam ◽  
Third Person ◽  
Parametric Cad

Abstract Virtual prototyping is a relatively new field which is significantly changing the product development process. In many applications, virtual prototyping relies on virtual reality tools for analysis of designs. This paper presents an architecture for a virtual prototyping system which was created for the analysis of automotive interiors. This flexible and open architecture allows the integration of various virtual reality software and hardware tools with conventional state-of-the-art CAD/CAM tools to provide an integrated virtual prototyping environment. This architecture supports the automatic transfer of data from and to parametric CAD systems, human modeling for ergonomic evaluations (first person and third person perspectives), design modifications in the virtual environment, distributed evaluations of virtual prototypes, reverse transfer of design modifications to the CAD system, and preservation of design intent and assembly intent during modifications in the virtual environment.

Research on Virtual Prototyping Development of Product Information Modeling Method

2010 ◽  
Vol 129-131 ◽  
pp. 658-663 ◽  
Author(s):  
Tian Chen
Keyword(s):  
Virtual Environment ◽  
Information Exchange ◽  
Product Information ◽  
Virtual Prototyping ◽  
Information Modeling ◽  
Product Development Process ◽  
Design Stage ◽  
Concept Design ◽  
Virtual Design ◽  
Virtual Product

In the heterogeneous environment, fast and real-time information exchange is the requirements of rapid developing and information integrated for mechanical products. Meanwhile, it is also the basis and guarantee of virtual prototyping. This paper analyzes the process of mechanical product design, particularly starts from the concept design stage of virtual product to achieve information sharing and building information models, put forward a software network environment based on objects and STEP standards for integrated information model and the basic PVPIIM framework, application protocol's development, leaf characteristics of the definition and expressions. Furthermore, we proposed a distributed virtual environment in the virtual prototyping development and make it support the whole pump virtual product development process on basis of PVPIIM for an integrated virtual environment, where we use virtual reality modeling language VRML to describe the 3D geometric shape, material, texture, color and virtual design background of pump parts.

scholarly journals VIRTUAL PRODUCT DEVELOPMENT WITHIN A FOURTH YEAR OPTION IN THE MECHANICAL ENGINEERING CURRICULUM

2011 ◽  
Author(s):  
B. Sanschagrin ◽  
C. Fortin ◽  
A. Vadéan ◽  
A. Lakis
Keyword(s):  
Product Development ◽  
Virtual Environment ◽  
Mechanical Engineering ◽  
Process Management ◽  
Product Development Process ◽  
Engineering Curriculum ◽  
Master Program ◽  
Design Review ◽  
Project Assessment ◽  
Detail Design

The Mechanical Engineering Department of École Polytechnique after experimenting for a number of years with a virtual environment option in the Aerospace Master Program, created a new design option in the fourth year of the Mechanical Engineering program. This option is built around a project carried out by a large team working over two semesters where a digital product definition including Product Data Management and Manufacturing Process Management technologies are currently used to foster a concurrent product development process. This orientation contains three courses and the project. A series of laboratory sessions have been developed in each course in order to familiarise the students with the virtual environment and also the various types of analysis that they will have to perform on the product being developed. Professors teaching the three courses participate in the project definition and the project assessment. This approach reinforces the various subjects’ knowledge and integrates it into a practical realm close to an industrial environment. The project assessment includes four reviews. A requirements review and a conceptual review are set in the first semester and a preliminary design review and a critical or detail design review in the second semester. At each review, the students prepare a technical report followed by an oral presentation to a jury composed of four professors of the option, engineers from industry and the professor coordinating the SAE Student Formula. At each review, the students have to evaluate the work completed by each participant to the project. This evaluation impacts on the individual assessment of the project. The vision for this project is to integrate practical building and test experiences by coupling the option courses with an already existing lab course in the last semester. A major part of this lab course is oriented for practical team training (3 - 4 students) on a given number of laboratory experiments. It is planned that some of these labs will be focused on the analysis and testing of sub-assemblies already designed and built during the project of the previous or the current year. This goal is in line with our CDIO (Conceive, Design, Implement, Operate) initiative which aims to include in the engineering curriculum a number of design, build and test experiences.

Evolution of generic flight vehicle design synthesis

2010 ◽  
Vol 114 (1159) ◽  
pp. 549-567 ◽  
Author(s):  
B. Chudoba ◽  
W. Heinze
Keyword(s):  
Life Cycle ◽  
Product Development ◽  
Design Space ◽  
Product Development Process ◽  
Mission Design ◽  
Vehicle Design ◽  
Flight Vehicle ◽  
Next Generation ◽  
Design Synthesis ◽  
Manufacturing Testing

AbstractWhen defining a new product like an aircraft, space access vehicle or space mission, the Advanced Projects Group evaluates the available design space and compares it with the design space required to accomplish the specified mission. As with any product development process, the general life-cycle characteristics are established first during the conceptual design (CD) phase, clearly before a design proposal can be released to the follow-on design phases such as preliminary design (PD), detail design (DD), flight test (FT), and finally operation and disposal. As a rule of thumb, it can be assumed that around 80% of the flight vehicle configuration and mission tandem are determined during the CD phase alone, which is the key phase where the initial brainstorming has to take place. Clearly, it is the responsibility of the CD team to simulate the entire life-cycle of the project from ‘cradle to grave’ where the focus is on correctness rather accuracy in order to identify the design space and offer an overall proof of design convergence. Currently, the important primary aerospace vehicle and mission design decisions at CD level are still made using extremely simple analysis and heuristics. A reason for this scenario is the difficulty in synthesising the range of individual design disciplines for both, classical and novel aerospace vehicle conceptual designs, in more than anad hocfashion. Although the CD segment is seen as the most important step in the product development phase due to its pre-defining function, it is the least well understood part of the entire product evolution process due to its level of abstraction. This paper presents the roadmap towards the next generation of aerospace life-cycle synthesis systems, a software and management process capable to immediately calculate cost and time implications while simultaneously linking design, manufacturing, testing, and operation. A historical review of how design has been accomplished until today is presented. The design approaches are categorised and the characteristics of today’s state-of-the-art design synthesis systems are discussed. A specification for the new class of intelligent generic design synthesis systems is presented capable of satisfying the demands imposed by the new breed of high-performance aircraft, space access vehicles, space missions, and others. Finally, the development status of the next generation aerospace vehicle design synthesis (AVDS-PrADO) simulation-based acquisition environment is presented.

Integrated Product Design Using Rapid Prototyping Technology and Rapid Tooling in Concurrent Engineering Approach

2004 ◽  
Vol 471-472 ◽  
pp. 672-676 ◽  
Author(s):  
A.K. Das
Keyword(s):  
Product Development ◽  
Rapid Prototyping ◽  
Product Design ◽  
Concurrent Engineering ◽  
Virtual Prototyping ◽  
Parametric Modeling ◽  
Physical Models ◽  
Product Development Process ◽  
Analytical Models ◽  
Engineering Approach

Advancement and acceptance of Concurrent Engineering to speed up and improve product development process requires a systematic approach to the integrated, simultaneous design of products and their related processes, including manufacture and support [1] and Rapid Prototyping [2] is the one versatile tool that meet this requirement. Rapid Prototyping involves virtual prototyping and provides physical models as an end product. Traditionally initial industrial design concepts are shown as renderings or drawings, that show the look and feel of the product. The construction of mock up is followed after selection of a particular concept and these looks exactly like final product in true form, colour, texture etc. but without working internal components. With the advancement of CAD, 2 types of prototyping are in use in product design for modeling and simulating products performances. (a) Virtual prototyping using Analytical models (b) Physical prototyping making physical models These choices are influenced by variety of reasons. Physical prototypes are used for Communication purpose, Demonstration purpose, Scheduling /milestones, Feasibility study, Parametric modeling and Architectural interfacing. The above uses lead to a number of benefits such as insights into manufacturability and assemblability, accelerating of parallel activities and flexible product choices. In this paper, we are concerned from the point of view of an industrial designer for Integrated Product Development using concurrent engineering approach. Thus this paper highlights the benefits of Rapid Prototyping over conventional prototyping methods.

scholarly journals A survey of virtual prototyping techniques for mechanical product development

2003 ◽  
Vol 217 (4) ◽  
pp. 513-530 ◽  
Author(s):  
F Zorriassatine ◽  
C Wykes ◽  
R Parkin ◽  
N Gindy
Keyword(s):  
Product Development ◽  
Manufacturing Industry ◽  
Virtual Prototyping ◽  
World Market ◽  
Product Development Process ◽  
Research Issues ◽  
Computer Based ◽  
The Difference ◽  
Medium Enterprises ◽  
Near Future

Repeated, efficient, and extensive use of prototypes is a vital activity that can make the difference between successful and unsuccessful entry of new products into the competitive world market. In this respect, physical prototyping can prove to be very lengthy and expensive, especially if modifications resulting from design reviews involve tool redesign. The availability and affordability of advanced computer technology has paved the way for increasing utilization of prototypes that are digital and created in computer-based environments, i.e. they are virtual as opposed to being physical. The technology for using virtual prototypes was pioneered and adopted initially by large automotive and aerospace industries. Small-to-medium enterprises (SMEs) in the manufacturing industry also need to take virtual prototyping (VP) technology more seriously in order to exploit the benefits. VP is becoming very advanced and may eventually dominate the product development process. However, physical prototypes will still be required for the near future, albeit less frequently. This paper presents a general survey of the available VP techniques and highlights some of the most important developments and research issues while providing sources for further reference. The purpose of the paper is to provide potential SME users with a broad picture of the field of VP and to identify issues and information relevant to the deployment and implementation of VP technology.

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