Cognitive Challenges for Teamwork in Design

2017 ◽  
pp. 55-75 ◽  
Author(s):  
Ju Hyun Lee ◽  
Michael J. Ostwald ◽  
Ning Gu
Keyword(s):  
Experimental Data ◽  
Design Theory ◽  
Spatial Representation ◽  
Parametric Design ◽  
Design Strategy ◽  
Design Teams ◽  
Design Cognition ◽  
Cognitive Space ◽  
Design Experiments ◽  
Cognitive Challenges

This chapter combines experimental data and established design theory to examine four issues associated with design cognition that contribute to an improved understanding of creativity and teamwork in design. Drawing on data developed from two parametric design experiments undertaken by the authors, this chapter investigates the implications of (i) cognitive space, (ii) design strategy, (iii) design productivity and (iv) spatial representation, for individuals, and by inference, for groups and educators. Through this process the chapter develops a deeper understanding of the cognitive challenges facing design teams and educators of those teams.

scholarly journals Heterogeneous Simulated Annealing Teams: An Optimizing Search Algorithm Inspired by Engineering Design Teams

2018 ◽  
Author(s):  
Christopher McComb ◽  
Jonathan Cagan ◽  
Kenneth Kotovsky
Keyword(s):  
Simulated Annealing ◽  
Engineering Design ◽  
Simulated Annealing Algorithm ◽  
Search Algorithm ◽  
Random Search ◽  
Design Teams ◽  
Design Cognition ◽  
Gradient Based ◽  
Multi Agent ◽  
Annealing Algorithms

Although insights uncovered by design cognition are often utilized to develop the methods used by human designers, using such insights to inform computational methodologies also has the potential to improve the performance of design algorithms. This paper uses insights from research on design cognition and design teams to inform a better simulated annealing search algorithm. Simulated annealing has already been established as a model of individual problem solving. This paper introduces the Heterogeneous Simulated Annealing Team (HSAT) algorithm, a multi-agent simulated annealing algorithm. Each agent controls an adaptive annealing schedule, allowing the team develop heterogeneous search strategies. Such diversity is a natural part of engineering design, and boosts performance in other multi-agent algorithms. Further, interaction between agents in HSAT is structured to mimic interaction between members of a design team. Performance is compared to several other simulated annealing algorithms, a random search algorithm, and a gradient-based algorithm. Compared to other algorithms, the team-based HSAT algorithm returns better average results with lower variance.

A Design Process Model That Unifies General Design Theory and Empirical Findings

1995 ◽  
Author(s):  
Tetsuo Tomiyama
Keyword(s):  
Design Process ◽  
Design Theory ◽  
Process Model ◽  
Theoretical Work ◽  
Process Models ◽  
General Design ◽  
Cad System ◽  
Design Process Model ◽  
Theoretical Results ◽  
Design Experiments

Abstract This paper proposes a new design process model that unifies theoretical results of General Design Theory (GDT) and empirical findings obtained from design experiments. It first reviews the design process models that were developed within theoretical work on GDT. Then, we describe experimental work on design based on protocol analysis, which resulted in a cognitive design process model from which further a computable design process model was derived. While these experimental results are supposed to support the theoretical conclusions obtained from GDT, we could also find out incompatibilities. We then propose a new design process model, called the refinement design process model, that can unify both theoretical results of GDT and experimental finding obtained from design experiments. The refinement model has better agreements with experimental findings and suggests various issues as a guiding principle to develop a future, advanced CAD system that helps a designer to focus on functional information. We propose and illustrate the concepts of such an advanced CAD system equipped with intensive design knowledge, called a computational framework for knowledge intensive engineering.

An Extended Linearized Inverse Theory for Fully Cavitating Hydrofoil Section Design

1979 ◽  
Vol 23 (04) ◽  
pp. 260-271
Author(s):  
Blaine R. Parkin ◽  
Joe Fernandez
Keyword(s):  
Design Theory ◽  
Parametric Design ◽  
Lift Coefficient ◽  
Design Procedure ◽  
Cavitation Number ◽  
Inverse Theory ◽  
Cavity Surface ◽  
Moment Coefficient ◽  
Section Design ◽  
Cavity Thickness

A new design theory for fully cavitating hydrofoils is based upon a linearized inverse theory of two-dimensional cavity flows at arbitrary cavitation number. The cavity surfaces are assumed to originate at the leading and trailing edges of the wetted surface. This paper reviews and completes the basic theory, which leads to a parametric design technique. In the resulting design procedure, one specifies the design lift coefficient, the cavitation number and the upper cavity thickness at two points along the profile chord. A prescribed pressure distribution shape is also selected. These quantities determine the profilelesgn, which consists of the upper cavity and wetted surface contours, the design angle of attack, the cavity length, the drag coefficient, the moment coefficient and the lift-to-drag ratio. The chief new feature of the third design procedure is that the designer can now prescribe two points on the cavity surface instead of one as heretofore. Although the designer must observe certain constraints when he specifies these two values of cavity thickness, the new procedure is still found to be more general and more flexible than design procedures studied previously.

Pressure Drop of Impingement Air Cooled Plate Fin Heat Sinks

2006 ◽  
Vol 129 (2) ◽  
pp. 190-194 ◽  
Author(s):  
Zhipeng Duan ◽  
Y. S. Muzychka
Keyword(s):  
Experimental Data ◽  
Pressure Drop ◽  
Parametric Design ◽  
Reynolds Numbers ◽  
Fundamental Solutions ◽  
Heat Sinks ◽  
Momentum Balance ◽  
Rectangular Channels ◽  
Flow Pressure ◽  
Constitutive Components

The performance of impingement air cooled plate fin heat sinks differs significantly from that of parallel flow plate fin heat sinks. A simple impingement flow pressure drop model based on developing laminar flow in rectangular channels is proposed. The model is developed from simple momentum balance and utilizes fundamental solutions from fluid dynamics to predict its constitutive components. To test the validity of the model, experimental measurements of pressure drop are performed with heat sinks of various impingement inlet widths, fin spacings, fin heights, and airflow velocities. The accuracy of the pressure drop model was found to be within 20% of the experimental data taken on four heat sinks and other experimental data from the published literature at channel Reynolds numbers less than 1200. The simple model is suitable for impingement air cooled plate fin heat sinks parametric design studies.

Elliptical Gears Parametric Design and Motion Simulation

2010 ◽  
Vol 139-141 ◽  
pp. 1206-1210 ◽  
Author(s):  
Chi Bing Hu ◽  
Fang Yong Tian ◽  
Yan Cang Jiang
Keyword(s):  
Design Theory ◽  
Parametric Design ◽  
Parametric Modeling ◽  
Motion Simulation ◽  
Improve Design ◽  
Operation Process ◽  
Development Cycle ◽  
Complex Design ◽  
Quality Of Products

Based on the design theory of non-circular gears, using Visual Basic 6.0 Programming language secondary developed SolidWorks software, a system of elliptical gears parametric design and motion simulation was developed. 3D parametric modeling and motion simulation of elliptical gears can be achieved by this system. The development process of system is introduced in detail, and an example which designed a transmission with two identical three rank elliptical gears was given to illustrate the system operation process in detail. Using elliptical gears pair ratio cyclical curves acquired, compared with theoretical transmission ratio can verify design whether meet the requirements. Complex design and calculation and difficult 3D modeling problems of elliptical gears are solved, and this system can also improve design precision, shorten the development cycle, and guarantee the quality of products.

scholarly journals Drawing Inspiration From Human Design Teams for Better Search and Optimization: The Heterogeneous Simulated Annealing Teams Algorithm

2016 ◽  
Vol 138 (4) ◽  
Author(s):  
Christopher McComb ◽  
Jonathan Cagan ◽  
Kenneth Kotovsky
Keyword(s):  
Simulated Annealing ◽  
Computational Model ◽  
Engineering Design ◽  
Search Strategies ◽  
Design Teams ◽  
Design Cognition ◽  
Team Members ◽  
Structure Interaction

Insights uncovered by research in design cognition are often utilized to develop methods used by human designers; in this work, such insights are used to inform and improve computational methodologies. This paper introduces the heterogeneous simulated annealing team (HSAT) algorithm, a multiagent simulated annealing (MSA) algorithm. HSAT is based on a validated computational model of human-based engineering design and retains characteristics of the model that structure interaction between team members and allow for heterogeneous search strategies to be employed within a team. The performance of this new algorithm is compared to several other simulated annealing (SA) based algorithms on three carefully selected benchmarking functions. The HSAT algorithm provides terminal solutions that are better on average than other algorithms explored in this work.

Parametric Design of Grid Plate Type Peanut Picking Machine

2013 ◽  
Vol 380-384 ◽  
pp. 87-90
Author(s):  
Jun Ming Hou ◽  
De Xu Yang ◽  
Yan Tao Qu ◽  
Lian Xing Gao
Keyword(s):  
Design Theory ◽  
Parametric Design ◽  
Main Structure ◽  
Damage Rate ◽  
Grid Plate ◽  
Section Type ◽  
Plate Type

According to the design theory, two section type peanut harvesting characteristics is studied. A suitable northeast harvesting peanut picking machine is developed. It is applied with half feeding form according to the Liaoning advocate. A division 'Tangyou' series peanut harvesting style is applied for the design. The calculation of correlative parameters is made, the organization form defined, and the main structure was analyzed. The results show that the design of machines meets the peanut picking requirements. And in the fruit picking process to achieve the low damage rate, it can completely adapt to the requirements of the rural northeast.

Potential Limitations of Verbal Protocols in Design Experiments

2010 ◽  
Author(s):  
I. Chiu ◽  
L. H. Shu
Keyword(s):  
Cognitive Processes ◽  
Methodological Approach ◽  
Experimental Methodology ◽  
Verbal Protocol ◽  
Design Cognition ◽  
Verbal Protocols ◽  
Design Studies ◽  
Practical Tool ◽  
Future Work ◽  
Design Experiments

Contradictory results of a recent design stimulation and creativity experiment prompted us to re-examine our chosen methodological approach, namely the use of verbal protocols. We used verbal protocols to study design cognition associated with stimulus use. Our results showed that use of stimuli did not increase concept creativity, contradicting much of the design literature. After eliminating other possible errors, we re-examined the experimental methodology to identify potential design-specific limitations associated with verbal protocols. Many researchers have used verbal protocol experiments, also known as talk-out-loud experiments, to study cognitive processes, as there are few other methods to study internal cognition. While verbal protocols are a widely debated method, research has been done to validate them, and precautions can be taken to mitigate associated risks. Based on reviewing the literature and our own experiences, we have developed design-specific guidelines for the use of verbal protocols. We also outline future work required to explore and understand the suitability of verbal protocols for design studies. Despite potential limitations, verbal protocols remain a valuable and practical tool for studying design cognition and therefore should not be discarded.

Design and Fabrication of Nanocomposite Tool Materials

2010 ◽  
Vol 29-32 ◽  
pp. 1758-1761
Author(s):  
Fa Zhan Yang ◽  
Jian Qiang Zhou ◽  
Guang Yao Meng ◽  
Jun Zhao ◽  
Chang He Li
Keyword(s):  
Experimental Data ◽  
Mechanical Properties ◽  
Design Theory ◽  
Design Method ◽  
Materials Design ◽  
Interface Debonding ◽  
Phase Content ◽  
Tool Materials

Nanocomposite tool materials are very important in engineering field for their advantage in mechanical properties and have a good foreground in the coming years. However, there are lots of puzzles in the materials design theory. So in this paper, a new nanocomposite tool materials design method is proposed based on the interface debonding theory. The wild phase content can be fixed by calculating the debonding interface rate and the strength requirement of the tool materials. Therefore, an experiment is carried out to fabricate WC based nanocomposite tool materials under the guider of the interface debonding theory. Results show that the experimental data is in accordance well with the calculation and the model is proved to be correct.

Design Method and Parameters Matching of Electric Motors for Hybrid Construction Equipment

2014 ◽  
Vol 950 ◽  
pp. 160-164
Author(s):  
Fan Wei Meng ◽  
Yong Biao Hu
Keyword(s):  
Electric Drive ◽  
Calculation Method ◽  
Design Theory ◽  
Parametric Design ◽  
Design Method ◽  
Simulation Software ◽  
Theory And Practice ◽  
Electric Motors ◽  
Hybrid Electric ◽  
Hybrid Construction

Design methods of electric motors and reasonable parametric design principles for hybrid electric construction equipments are proposed. In accordance with the power performance, economical efficiency and electric transmission features of construction equipments, the new design method of electric motors which is an advanced application-centric design process are analyzed, and the design theory and calculation method of main parameters are discussed, so that theoretical basis is provided for the research and design of new electric drive construction equipments. Parametric design of a typical dozer drive train is conducted applied the proposed new design method and calculation method. Major components of the power train are modeled using the simulation software Simulink. Based on power track control strategy, the simulation results show that the proposed new design method and parameter design theory of electric motors for hybrid construction equipments are reasonable. It has significance in both theory and practice for the research and development of hybrid electric drive construction equipments.

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