A Quantitative Analysis of the Evolution of Design Automation Conference Fields

2004 ◽  
Author(s):  
Mounib Mekhilef ◽  
Barthe´lemy Longueville
Keyword(s):  
Design Automation ◽  
Computer Aided Design ◽  
Mechanical Design ◽  
Integrated Design ◽  
Technical Conference ◽  
Point Of View ◽  
Systematic Analysis ◽  
Research Fields ◽  
Pragmatic Analysis ◽  
Aided Design

A quick look to the literature related to “Design” points out the fact that traditional fields are covered by a huge quantity of concepts and sub-topics dealing with various research fields. Some of these fields and related concepts are emerging and others are disappearing. The last two decades provided a large variations in the covered fields—probably because of the computers capacity and the knowledge sharing using the internet- We are convinced that is time now for a global understanding of the evolution of the related preoccupations in order to start a new phase that deals with the next guidelines issues in design. Many researchers and gurus have proposed evolution schemes from an epistemological point of view. However, we believe that we still need a pragmatic analysis of what have been done and what is going on now in the various publications that deals with design, conferences and journals. To do so, we present in this paper an approach that lies on the systematic analysis of the International Design Engineering Technical Conference (IDETC-ASME), the Design Conference, the Integrated Design and Manufacturing in Mechanical Engineering (IDMME) and the International Conference in Engineering Design (ICED). We also consider the major reviews and journals related to design such as Computer-Aided Design, Journal of mechanical design and many others. Our proposition, presents a global overview that shows the time-evolution of the topics, the density production, the emerging areas and concepts. We show then that some topics remain with a great interest and other are in a decreasing period. A specific study of what is going on within the Design Automation Conference is provided and an open discussion is started.

scholarly journals Future Trends in Optimization

1981 ◽  
Vol 103 (4) ◽  
pp. 677-682
Author(s):  
G. E. Johnson
Keyword(s):  
Computer Aided Design ◽  
Mechanical Design ◽  
Design Sensitivity ◽  
Technical Conference ◽  
Columbia University ◽  
Future Trends ◽  
University Of Iowa ◽  
Design Integration ◽  
Aided Design ◽  
The University

The purpose of this article is to provide a permanent record of the major ideas and questions raised during the panel session entitled “Future Trends in Optimization” at the 1980 Design Engineering Technical Conference in Beverly Hills, California. The panel members were Professors D. J. Wilde of Stanford University, E. J. Haug of the University of Iowa, K. M. Ragsdell of Purdue University, J. N. Siddall of McMaster University, and F. Freudenstein of Columbia University. They spoke, respectively, on Optimal Design Under Uncertainty; Computer-aided Design Sensitivity Analysis and Optimization of Dynamic Systems; Optimization: The Future of Design, Integration of Optimization with the Design Process; and Optimization in Mechanisms: Past, Present, and Future. It is hoped that the article will prove useful in guiding future efforts in the area of optimal mechanical design.

scholarly journals Edge Models with the CAD Software: Creating a New Context for Mathematics in Elementary School

2021 ◽  
Author(s):  
Felicitas Pielsticker ◽  
Ingo Witzke ◽  
Amelie Vogler
Keyword(s):  
Elementary Schools ◽  
Digital Media ◽  
Computer Aided Design ◽  
Subjective Experience ◽  
Fourth Graders ◽  
Point Of View ◽  
Toulmin Model ◽  
Geometric Objects ◽  
Design Software ◽  
Aided Design

AbstractDigital media have become increasingly important in recent years and can offer new possibilities for mathematics education in elementary schools. From our point of view, geometry and geometric objects seem to be suitable for the use of computer-aided design software in mathematics classes. Based on the example of Tinkercad, the use of CAD software — a new and challenging context in elementary schools — is discussed within the approach of domains of subjective experience and the Toulmin model. An empirical study examined the influence of Tinkercad on fourth-graders’ development of a model of a geometric solid and related reasoning processes in mathematics classes.

scholarly journals Characterisation of the Filler Fraction in CAD/CAM Resin-Based Composites

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1986
Author(s):  
Andreas Koenig ◽  
Julius Schmidtke ◽  
Leonie Schmohl ◽  
Sibylle Schneider-Feyrer ◽  
Martin Rosentritt ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Point Of View ◽  
Specific Information ◽  
Dental Resin ◽  
X Ray ◽  
Computer Aided ◽  
Cad Cam ◽  
Filler Fraction ◽  
The Individual ◽  
Aided Design

The performance of dental resin-based composites (RBCs) heavily depends on the characteristic properties of the individual filler fraction. As specific information regarding the properties of the filler fraction is often missing, the current study aims to characterize the filler fractions of several contemporary computer-aided design/computer-aided manufacturing (CAD/CAM) RBCs from a material science point of view. The filler fractions of seven commercially available CAD/CAM RBCs featuring different translucency variants were analysed using Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Micro-X-ray Computed Tomography (µXCT), Thermogravimetric Analysis (TG) and X-ray Diffractometry (XRD). All CAD/CAM RBCs investigated included midifill hybrid type filler fractions, and the size of the individual particles was clearly larger than the individual specifications of the manufacturer. The fillers in Shofu Block HC featured a sphericity of ≈0.8, while it was <0.7 in all other RBCs. All RBCs featured only X-ray amorphous phases. However, in Lava Ultimate, zircon crystals with low crystallinity were detected. In some CAD/CAM RBCs, inhomogeneities (X-ray opaque fillers or pores) with a size <80 µm were identified, but the effects were minor in relation to the total volume (<0.01 vol.%). The characteristic parameters of the filler fraction in RBCs are essential for the interpretation of the individual material’s mechanical and optical properties.

scholarly journals Strategy for the engineering integration of the ESS accelerator

2016 ◽  
Vol 44 ◽  
pp. 1660208
Author(s):  
Nikolaos Gazis ◽  
David McGinnis ◽  
Stephen Molloy ◽  
Eugene Tanke ◽  
Carl-Johan Hardh ◽  
...  
Keyword(s):  
Information Exchange ◽  
Computer Aided Design ◽  
Mechanical Design ◽  
Technical Information ◽  
Technical Requirements ◽  
Key Issues ◽  
Spallation Source ◽  
Engineering Integration ◽  
Under Construction ◽  
Aided Design

The European Spallation Source (ESS), currently under construction in Lund, Sweden, will be the world’s most powerful source of neutrons. The goal is to deliver neutrons to users in 2019 and reach full power sometime in the middle of the following decade. One of the key issues for ESS is to develop a strategy, along with the proper innovative tools, to efficiently communicate and smoothly collaborate between divisions and groups inside ESS and with its outside collaborators, so-called In-Kind Contributors (IKC). Technical requirements related to the scope to be delivered are among the most important technical information to be exchanged. This information exchange is facilitated by using a commercial requirements management database that is accessible through the web. The physics multidisciplinary needs are linked with the engineering integration through LinacLego, which is a tool that provides all updated lattice data for the accelerator. The lattice information is then gathered and utilized to control the physical positioning of the mechanical engineering components for the accelerator. The precision for this operation is provided by a dedicated mechanical design skeleton in a Computer Aided Design (CAD) environment. Finally, the realization of all these steps is supervised in detail and continuously evaluated. In this way the required ESS machine design can be delivered, both in terms of the engineering and the physics aspects.

A CAD System for Designers’ Decision Making: An Approach With 2D and 3D Integrated and Hierarchical Assembly Models

1991 ◽  
Author(s):  
S. Minami ◽  
T. Ishida ◽  
S. Yamamoto ◽  
K. Tomita ◽  
M. Odamura
Keyword(s):  
Decision Making ◽  
Computer Aided Design ◽  
Mechanical Design ◽  
Prototype System ◽  
Dimensional Model ◽  
3 Dimensional ◽  
Hierarchical Assembly ◽  
Cad System ◽  
Aided Design ◽  
2D And 3D

Abstract A concept for the initial stage of the mechanical design and its implementation in the computer-aided design (CAD) are presented. The process of decision making in design is: (1) determining an outline of the whole assembly using a 2-dimensional model that is easy to operate; (2) checking the outline using a 3-dimensional model in which it is easy to identify the spatial relationships; (3) determining details of its sub-assemblies or their components using the 2-dimensional model; and (4) checking the details using the 3-dimensional model. The CAD system must provide consistent relationships through all the steps. For that, following functions are implemented in our prototype system: (1) a 2D and 3D integrated model for consistency between 2- and 3-dimensional shapes, (2) a hierarchical assembly model with dimensional constraints for consistency within an assembly and their components, and (3) a check on constraints for consistency between shapes and designers’ intentions. As a result, the system can provide an environment well fitted to the designers’ decision making process.

scholarly journals Are Two Heads Better Than One For Computer-Aided Design?

2021 ◽  
pp. 1-38
Author(s):  
Vrushank Phadnis ◽  
Hamza Arshad ◽  
David Wallace ◽  
Alison Olechowski
Keyword(s):  
Computer Aided Design ◽  
Mechanical Design ◽  
Major Effect ◽  
Pair Programming ◽  
Digital Modeling ◽  
Computer Aided ◽  
Model Instance ◽  
Parallel Mode ◽  
Aided Design ◽  
Pair Work

Abstract With the availability of cloud-based software, ubiquitous internet and advanced digital modeling capabilities, a new potential has emerged to design physical products with methods previously embraced by the software engineering community. One such example is pair programming, where two coders work together synchronously to develop one piece of code. Pair programming has been shown to lead to higher quality code and designer satisfaction. Cutting-edge collaborative Computer-aided Design (CAD) technology affords the possibility to apply synchronous collaborative access in mechanical design. We test the generalizability of findings from the pair programming literature to the same dyadic configuration of work in CAD, which we call pair CAD. We performed human subject experiments with 60 participants to test three working styles: individuals working by themselves, pairs sharing control of one model instance and input, and pairs able to edit the same model simultaneously from two inputs. We compare the working styles on speed and quality, and propose mechanisms for our observations via interpretation of patterns of communication, satisfaction, and user cursor activity. We find that on a per-person basis, individuals were faster than pairs due to coordination and overhead inefficiencies. We find that pair work, when done with a single shared input, but not in a parallel mode, leads to higher quality models. We conclude that it is not Industry 4.0 technologies alone that influence designer output; choices regarding work process have a major effect on design outcomes, and we can tailor our process to suit project requirements.

Systematic Derivation of a Standard Set of Declarative Constraints for Shape Definition in CAD

1999 ◽  
Author(s):  
Bernie Bettig ◽  
Jami Shah
Keyword(s):  
Computer Aided Design ◽  
Data Exchange ◽  
Mechanical Design ◽  
Constraint Solving ◽  
Mathematical Basis ◽  
Parametric Data ◽  
Geometrical Constraints ◽  
Standard Set ◽  
Aided Design ◽  
Systematic Derivation

Abstract This paper describes the derivation of a consistent and comprehensive set of geometrical constraints for shape definition in Computer-Aided Design. These are needed to enable compatibility in parametric data exchange and to promote both standard capabilities and predictable solutions from constraint solving software kernels. The paper look at the mathematical basis for constraints present in the literature and elaborates about all types of constraints that can be described by the same mathematical basis. The approach considers all combinations of distance and angle constraints, on one point or all points of curves and surfaces, as well as transformations and mappings that are required in mechanical design.

scholarly journals Computer-Aided Design of Microfluidic Circuits

2020 ◽  
Vol 22 (1) ◽  
pp. 285-307 ◽  
Author(s):  
Elishai Ezra Tsur
Keyword(s):  
Computer Aided Design ◽  
Integrated Design ◽  
Optimization Methods ◽  
Performance Requirements ◽  
Computer Aided ◽  
Paper Based Microfluidics ◽  
Specification Synthesis ◽  
Description Languages ◽  
Aided Design

Microfluidic devices developed over the past decade feature greater intricacy, increased performance requirements, new materials, and innovative fabrication methods. Consequentially, new algorithmic and design approaches have been developed to introduce optimization and computer-aided design to microfluidic circuits: from conceptualization to specification, synthesis, realization, and refinement. The field includes the development of new description languages, optimization methods, benchmarks, and integrated design tools. Here, recent advancements are reviewed in the computer-aided design of flow-, droplet-, and paper-based microfluidics. A case study of the design of resistive microfluidic networks is discussed in detail. The review concludes with perspectives on the future of computer-aided microfluidics design, including the introduction of cloud computing, machine learning, new ideation processes, and hybrid optimization.

Effects of Immersion on Virtual Reality Prototype Design Reviews of Mechanical Assemblies

2018 ◽  
Author(s):  
Luis de Casenave ◽  
José E. Lugo
Keyword(s):  
Computer Aided Design ◽  
Virtual Prototype ◽  
Point Of View ◽  
Human Computer Interface ◽  
Design Decisions ◽  
Mechanical Assemblies ◽  
Accurate Design ◽  
Virtual Prototypes ◽  
Aided Design ◽  
Prototype Design

The proficiency of Computer Aided Design (CAD) to save, communicate and render realistic virtual prototypes allows for easier communication and review of proposed design decisions via design reviews. However, the use of virtual prototypes is limited by the realism of the human computer interface. This paper builds on previous research investigating if increasing the realism of input and output interactions between subjects and virtual prototypes will affect user’s ability to analyze an assembly for errors. For this end, two experiments were conducted which asked participants to perform design reviews on assembly models and identify errors in the assembly. The first experiment tested virtual prototype output display factors through subject point of view movement and virtual prototype rotation. The second experiment tested human input factors using different controller setups. It is expected the more realistic virtual prototype rendering and controller input experience will result in more accurate design reviews.

Geometric Modelling and Computer-Aided Design

2009 ◽  
pp. 1-31
Author(s):  
Xun Xu
Keyword(s):  
Computer Aided Design ◽  
Data Exchange ◽  
Geometric Model ◽  
Point Of View ◽  
Geometric Modelling ◽  
Cad Systems ◽  
Cad System ◽  
Wire Frame ◽  
Computer Aided ◽  
Aided Design

One of the key activities in any product design process is to develop a geometric model of the product from the conceptual ideas, which can then be augmented with further engineering information pertaining to the application area. For example, the geometric model of a design may be developed to include material and manufacturing information that can later be used in computer-aided process planning and manufacturing (CAPP/CAM) activities. A geometric model is also a must for any engineering analysis, such as finite elopement analysis (FEA). In mathematic terms, geometric modelling is concerned with defining geometric objects using computational geometry, which is often, represented through computer software or rather a geometric modelling kernel. Geometry may be defined with the help of a wire-frame model, surface model, or solid model. Geometric modelling has now become an integral part of any computer-aided design (CAD) system. In this chapter, various geometric modelling approaches, such as wire-frame, surface, and solid modelling will be discussed. Basic computational geometric methods for defining simple entities such as curves, surfaces, and solids are given. Concepts of parametric, variational, history-based, and history-free CAD systems are explained. These topics are discussed in this opening chapter because (a) CAD was the very first computer-aided technologies developed and (b) its related techniques and methods have been pervasive in the other related subjects like computer-aided manufacturing. This chapter only discusses CAD systems from the application point of view; CAD data formats and data exchange issues are covered in the second chapter.

Sign in / Sign up

Export Citation Format

Share Document