A Study on the Representation of Examples in Learning Engineering Concepts

2012 ◽  
Author(s):  
Olufunmilola Atilola ◽  
Vimal Viswanathan ◽  
Julie Linsey
Keyword(s):  
Pilot Study ◽  
Physical Model ◽  
Computer Aided Design ◽  
Engineering Students ◽  
Design Thinking ◽  
Solution Space ◽  
New Concepts ◽  
Design Representations ◽  
Aided Design

The use of examples in engineering curricula is a commonly used means to teach engineering students new concepts and ideas; these examples play an important role in teaching engineering students how to become technically competent engineers and designers. Being able to learn from examples and avoid fixation to those examples is an important task in that process. Design fixation is a major constraint in design thinking as it limits the solution space where designers search for their ideas. The experiments described in this paper aims to investigate how students fixate to different types of representations. A pilot study comparing sketched and physical representations of examples shows that students are less likely to fixate to the design specifications of examples provided in the form of physical model, this suggests that they are able to better understand the design limitations of examples presented in the form of a physical model. Based on the preliminary results from this pilot experiment, the framework for a follow-up experiment is developed. This second experiment will explore the trend observed in the pilot study further and will compare how students fixate on and derive information between sketched and computer-aided design representations.

Performance atlases of the workspace for planar 3-DOF parallel manipulators

Robotica ◽  
2000 ◽  
Vol 18 (5) ◽  
pp. 563-568 ◽  
Author(s):  
Xin-Jun Liu ◽  
Jinsong Wang ◽  
Feng Gao
Keyword(s):  
Physical Model ◽  
Optimum Design ◽  
Computer Aided Design ◽  
Solution Space ◽  
Parallel Manipulators ◽  
Performance Characteristics ◽  
Performance Criteria ◽  
Computer Aided ◽  
Aided Design

The design of the robotic mechanisms is most important because they determine the performance characteristics of the robots. This paper concerns the issue of computer-aided design (CAD) for planar 3-DOF parallel robotic mechanisms by means of the physical model of the solution space, which can be used systematically to express the relationships between the performance criteria and all link lengths of one type of the robtic mechanism. The performance atlases of the workspace volume for the manipulators are plotted in the physical model of the solution space. The characteristics of the distribution of the workspace shapes in the physical model of the solution space are presented. The results are useful for the optimum design of the robotic mechanisms. This paper proposes a new way for robotic CAD.

Workspace atlases for the computer aided design of the Delta robot

2003 ◽  
Vol 217 (8) ◽  
pp. 861-869 ◽  
Author(s):  
X-J Liu ◽  
J Wang ◽  
H Zheng
Keyword(s):  
Physical Model ◽  
Optimum Design ◽  
Computer Aided Design ◽  
Solution Space ◽  
Parallel Robots ◽  
New Method ◽  
Performance Criteria ◽  
Computer Aided ◽  
Aided Design

Parallel robots lead to complex kinematics equations, so determination of their workspaces is a challenging issue. The workspace of a robot is not fully characterized by its volume alone; the workspace shape is an important aspect as well. In this paper, the geometric determination of the workspace for Delta robots is presented. The workspace (workspace volume and workspace shape) for the robots is studied systematically in ‘the physical model of the solution space’, which is a useful tool to express relationships between the performance criteria and all link lengths of one type of robotic mechanism. Performance atlases of the workspace volume for the robots are plotted in the physical model of the solution space. The characteristics of the distribution of the workspace shapes in the physical model of the solution space are presented as well. The physical model of the solution space presents a new method for the computer aided design (CAD) of robotic mechanisms. The results are very useful for obtaining the optimum design of robotic mechanisms.

Building a Design-Centered STEAM Course

2021 ◽  
pp. 416-427
Author(s):  
Antonios Karampelas
Keyword(s):  
Computer Aided Design ◽  
Industrial Revolution ◽  
Design Thinking ◽  
Computational Thinking ◽  
Community Schools ◽  
Learning Goals ◽  
Architectural Engineering ◽  
Online Setting ◽  
And Mathematics ◽  
Aided Design

This chapter presents the blended-learning, project-based high school STEAM (science, technology, engineering, art, and mathematics) course that has been developed and delivered at the American Community Schools (ACS) Athens. The STEAM course fosters data literacy; critical, creative, and computational thinking; and problem-solving. The topics range from the internet of things, artificial intelligence, and data-based investigations to an introduction to aerospace, electrical, and architectural engineering, in the context of the Fourth Industrial Revolution. Computer-aided design software and the design thinking methodology are the major creative tools students use to experience immersive STEAM learning. The content of the course is described in terms of learning goals, instruction, and assessments, accompanied by instructional material. The transition of the STEAM course to an online setting is also discussed, and the author's reflections are shared.

First Steps Towards an All Embracing Relations-Based Modeling

2004 ◽  
Author(s):  
Zolta´n Rusa´k ◽  
Imre Horva´th ◽  
Wilfred van der Vegte
Keyword(s):  
Conceptual Design ◽  
Computer Aided Design ◽  
Conceptual Modeling ◽  
Detail Design ◽  
Functional Aspects ◽  
New Concepts ◽  
Generic Modeling ◽  
Concept Of Information ◽  
Mathematical Definitions ◽  
Aided Design

The focus in computer-aided design is shifting from geometric aspects to functional aspects and from the detail design to a multi-aspect conceptual design. As a consequence, new concepts are emerging and being tested, for instance, for comprehensive geometric and functional modeling in conceptual design. This paper introduces a new approach, which has been called relations-based design. Relations are existential, manifestation and behavioral associations, dependencies and interactions between human, artifacts and environments. Nucleus is introduced as a generic modeling entity, which includes two regions of one or two objects that are interconnected by a system of relations in a particular situation. A design concept (or an artifact) is conceived as a purposeful composition of specific instances of nuclei. The nucleus can be instantiated at multiple levels such as entity, component, subassembly and assembly. A set of relations has been predefined to express qualitative and quantitative associations, dependencies and interactions between objects in a parameterized form on these levels. As a modeling entity, the nucleus offers many advantages in multi-aspect conceptual modeling by integrating incomplete and uncertain geometric, structural, physical and behavioral modeling. The paper introduces the foundational theories, the most important mathematical definitions, and the concept of information management. Finally, it points at some advantages of relations based modeling in the context of application cases comparing it with the physical modeling offered in a commercial system.

scholarly journals EDUCATING ENGINEERS ABOUT PRODUCT DESIGN METHODOLOGY

2011 ◽  
Author(s):  
Paul M. Kurowski ◽  
George K. Knopf
Keyword(s):  
Product Design ◽  
Computer Aided Design ◽  
Design Methodology ◽  
Engineering Students ◽  
Design Project ◽  
Structured Design ◽  
Modern Computer ◽  
Development Methodology ◽  
Actual Design ◽  
Aided Design

A successful product designer must combine natural creativity with the systematic use of structured design methodology and modern computer-aided design tools. Practice without proper instruction and formal guidance fails to recognize the vast knowledge of the design process developed by successful professionals. However, designing a product solely by theory without the experience derived from practice is ineffective because many subtleties and exceptions are learned by working on actual design project. In this paper, the authors discuss how formal lectures on product design and development methodology can be effectively combined with a hands-on design project leading to viable solutions by novice engineering students to open-ended problems.

scholarly journals Monitoring Alveolar Ridge Remodelling Post-Extraction Using Sequential Intraoral Scanning over a Period of Four Months

2020 ◽  
Vol 17 (18) ◽  
pp. 6638
Author(s):  
Khaled E. Ahmed
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Dimensional Changes ◽  
Intraoral Scanning ◽  
Computer Aided ◽  
Potential Applications ◽  
Cad Cam ◽  
Aided Design ◽  
2D And 3D

The potential applications of computer-aided design/computer-aided manufacturing (CAD/CAM) and intraoral scanning exceed the delivery of standard prosthodontic interventions. The aim of this study was to clinically present a developed assessment technique, that relies on the use of sequential intraoral scanning, three-dimensional superimposition, and 2D and 3D deviation analyses based on a standardised protocol, as an auxiliary tool in monitoring dimensional changes of residual ridge post-extraction with a follow-up period of four months.

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