Consideration of Uncertainty in Virtual Product Design

Author(s):  
Lucia Mosch ◽  
Andre´ Sprenger ◽  
Reiner Anderl

In design, manufacturing and usage of technical products uncertainty arises according to process properties and results in influence of products properties. In current CAD-systems, where products and product properties are presented, uncertainty is not considered yet. In this paper, we propose a new enhanced concept for the visualization of information about uncertainty in CAD-systems. The presentation of uncertainty is realized on basis of three-dimensional parametric models in a CAD-system and an implemented uncertainty-browser. The uncertainty-browser acts as a graphical user interface to categorize information about uncertainty, the processes and product properties. Beyond that, information about uncertainty will be visualized as annotations referring to chosen properties. Being aware of information about uncertainty during product design, the engineer is able to improve his product. The representation of uncertainty is based on an ontology based information system for supporting the collection and categorization of information about processes, products and uncertainty.

2010 ◽  
Vol 447-448 ◽  
pp. 442-446
Author(s):  
Sonken Ando ◽  
Ryo Ikeda ◽  
Hideki Aoyama ◽  
Norihito Hiruma

Three-dimensional CAD systems contribute considerably to the detailed design processes of products. They are applied to the construction of 3D design models which are also utilized for design evaluation using a CAE system and for NC data generation using a CAM system. Since the functions of 3D CAD systems for constructing 3D models are increasingly being enhanced, they enable designers to easily construct 3D product models without design expertise. In detailed design work, designers are required not only to exactly define product shapes but also to assign attribute information such as dimensional tolerance, geometrical tolerance, roughness, machining process to be performed etc., which are essential for the manufacturing process. However, inexperienced designers often find it extremely hard to determine optimum attribute values and design values. In addition, it is more difficult to construct the required die/mold from the desired product shape taking into account forming errors caused by shrinkage during plastic injection and springback during press forming. This paper proposes a method to automatically assign required attribute information to each part of a designed product, to assist the model construction of a die/mold from a product shape, and to provide design support information on each part of a designed product to a designer. The proposed method is realized by assigning a Function Feature to each part; all the function features proposed in this paper are original. A CAD system based on the proposed method for injection molding and press forming was developed, and results of simple design experiments confirmed the usefulness of the CAD system and function features


2011 ◽  
Vol 44 (6) ◽  
pp. 1281-1284 ◽  
Author(s):  
Christian B. Hübschle ◽  
George M. Sheldrick ◽  
Birger Dittrich

ShelXleis a graphical user interface forSHELXL[Sheldrick, G. M. (2008).Acta Cryst.A64, 112–122], currently the most widely used program for small-molecule structure refinement. It combines an editor with syntax highlighting for theSHELXL-associated .ins (input) and .res (output) files with an interactive graphical display for visualization of a three-dimensional structure including the electron density (Fo) and difference density (Fo–Fc) maps. Special features ofShelXleinclude intuitive atom (re-)naming, a strongly coupled editor, structure visualization in various mono and stereo modes, and a novel way of displaying disorder extending over special positions.ShelXleis completely compatible with all features ofSHELXLand is written entirely in C++ using the Qt4 and FFTW libraries. It is available at no cost for Windows, Linux and Mac-OS X and as source code.


Author(s):  
Karthik Sundaram ◽  
Abhishek Chakravarty ◽  
Katie Grantham Lough ◽  
Derek Ditch

This paper introduces RED (Risk in Early Design) software developed by the R.I.S.K by Design Lab at University of Missouri-Rolla. The RED software is a risk analysis tool that enables failure prevention to begin during the conceptual phase of product design. The main focus of the paper is describing the software architecture and application. Its unique graphical user interface allows designers to simply select the functions of the system being designed and the software immediately generates a risk analysis report. This analysis categorizes risk likelihood and consequence elements for a product by translating the recorded information about function and failure. An example describing the software’s use in the design process is also presented.


2002 ◽  
Vol 41 (05) ◽  
pp. 411-413 ◽  
Author(s):  
D. Keller ◽  
W. J. Schaller ◽  
J. S. K. Wong ◽  
P. C. de Groen

Summary Objectives: Electronic medical record systems permit collection of large amounts of medical information. Usually, information is presented in a fixed format, either as text or tables. Health care providers have to navigate this fixed format in order to find information useful for a specific patient-provider interaction. The main objective of this work was to allow the provider immediate access to specific laboratory information through the development of a highly customizable, graphical user interface to the Mayo Clinic laboratory information system. Methods – Results: Here we describe this platform-independent, World-Wide-Web-based graphical user interface that allows the provider to see all or a predetermined panel of essential laboratory data in graphical format. Advantages include availability at internet-based workstations, immediate recognition of trends over time, ability to zoom in and out of specific periods of time, and detailed analysis of patient values in relationship to normal values. Conclusions: Web browser-based user interface allowing graphical display of laboratory data using Java technology was described. The connection to the Mayo Clinic laboratory information system combines cross-platform support for use on virtually any networked machine, interaction through a Web browser for ease of use, and a combination of the Perl and Java languages for powerful data processing and interactivity.


1995 ◽  
Vol 1995 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Mark Reed ◽  
Henrik Rye

ABSTRACT A comprehensive model of the dynamic, three-dimensional physical fates of contaminants in the marine environment has been developed. For oil spills, dissolution of aromatics from surface slicks and entrained oil droplets are the source of potential effects for biota in the water column. Oil on the surface and along shorelines provides the basis for evaluation of impacts on birds, marine mammals, and recreational activities. A graphical user interface couples the model to a variety of environmental databases and tools to facilitate specific applications and viewing of simulation results.


Author(s):  
Mitchell J. Kelley ◽  
David W. Rosen

CAD systems have powerful features for creative technical design, yet these features are exposed through highly restrictive user interfaces. We argue that CAD users would be more productive and creative if they had greater control over their interface configuration. We propose and specify a feature set for a reconfigurable CAD user interface system. We review our prototype implementation of the proposed system and several use cases where a reconfigurable user interface would be beneficial. We present insights from our experience with popular CAD systems, various reconfigurable text editors, and our prototype CAD system. This work focuses on enhancing the utility of mice and keyboards but can be extended to any input device. Planned user studies are presented.


Sign in / Sign up

Export Citation Format

Share Document