scholarly journals Extended Sequence Modelling in Design Engineering – Gaining and Documenting Knowledge about Embodiment Function Relations with the C&C2-Approach

2019 ◽  
Vol 1 (1) ◽  
pp. 1483-1492 ◽  
Author(s):  
Sven Matthiesen ◽  
Patric Grauberger ◽  
Lukas Schrempp
Keyword(s):  
Analytical Models ◽  
Design Engineering ◽  
Support Design ◽  
Design Decisions ◽  
Four Dimensions ◽  
Engineering Teams ◽  
Design Engineers ◽  
Embodiment Design ◽  
Extended Sequence ◽  
And Function

AbstractIn embodiment design, functions are implemented in a technical systems embodiment. For doing so, design engineers need to understand the relations of embodiment and function. Many systems change their states during function fulfilment which complicates their relations and leads to ambiguity in design decisions. The challenge for design engineers is that they often need to make important decisions about the design before they can use sophisticated analytical models to investigate them. This contribution presents a structure for the C&C²-Sequence Model as a non-analytical model to support design engineers in modelling embodiment function relations. This structure contains four dimensions that are derived from the state of the art and preliminary work. It enables the structuring of gained knowledge about embodiment function relations and supports their communication in design engineering teams. Two development projects in academic and corporate environment are conducted using the structure to investigate its applicability. In these projects, design engineers were able to document and use gained knowledge about the investigated complicated systems.

scholarly journals Introducing systems oriented design for complex societal contexts in design engineering education

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Jairo da Costa Junior ◽  
Ana Laura Rodrigues dos Santos ◽  
Jan Carel Diehl
Keyword(s):  
Large Scale ◽  
Resource Depletion ◽  
Point Of View ◽  
Design Engineering ◽  
Support Design ◽  
Humanitarian Emergencies ◽  
Study Approach ◽  
Design Engineers ◽  
Problem Solvers ◽  
Societal Problems

As our society faces large-scale wicked problems like global warming, resource depletion, poverty and humanitarian emergencies, problem solvers are required to apply new reasoning models more appropriate to deal with these complex societal problems. Dealing with these problems poses unfamiliar challenges in contexts with poor financial and infrastructural resources. Systems Oriented Design (SOD) has been recognized in the literature as a promising approach, capable to support design engineers to deal with these complex societal problems. This paper explores the application of SOD in the development of Product-Service System (PSS) concepts by student teams in a multidisciplinary master course. The course resulted in twelve concepts that were analysed using a case study approach with the support of protocol analysis. The analysis results in a description of advantages, context- and process-related challenges of using SOD. From an education point-of-view, the results demonstrate that even though SOD provides students with a broad knowledge base and skills to deal with problems in complex societal contexts, there is still the need to introduce the appropriate scope and depth in the design engineering curricula, making the transition from traditional product design, a challenging one.

scholarly journals Exploring how design guidelines benefit design engineers: an international and global perspective

2020 ◽  
Vol 6 ◽  
Author(s):  
Benedikt Reimlinger ◽  
Quentin Lohmeyer ◽  
Ralf Moryson ◽  
Mirko Meboldt
Keyword(s):  
Design Guidelines ◽  
Global Perspective ◽  
Support Design ◽  
Design Guideline ◽  
Benefit Design ◽  
Design Engineers ◽  
Embodiment Design ◽  
Current Engineering ◽  
Different Levels ◽  
Mobile Eye Tracking

A multitude of design guidelines that are intended to support design engineers with knowledge and information during the embodiment design of physical products have been developed back in the 1980s and 1990s. However, since then, the setting in which products are developed and designed has changed and associated tasks and activities are carried out globally rather than locally. Yet, knowledge on the benefit of such design guidelines and their impact on the performance of multinational design engineers from different regions and with different levels of experience is still lacking. To address this, a mobile eye tracking study has been developed and carried out with 47 differently experienced practitioners from Germany, Eastern Europe and Asia. The results show differences in how design engineers from different regions with different levels of experience may benefit from design guidelines and how design guidelines may impact experts’ and novices’ performance, indicate beneficial ways of using them and point out the kind of information and the way of representation that attracts the most attention within a design guideline. The paper concludes that the improvement and development of design guidelines that are intended to support the embodiment design of physical products is needed and proposes to rethink current engineering design guidelines both content-wise and representation-wise.

Contemporary Methods of Designing Rail Vehicle Running Systems with the Use of CAD and CAM Solutions

2020 ◽  
Vol 64 (187) ◽  
pp. 75-80
Author(s):  
Tomasz Antkowiak ◽  
Marcin Kruś
Keyword(s):  
System Design ◽  
Preliminary Design ◽  
Support Design ◽  
Detailed Design ◽  
Final Shape ◽  
Rail Vehicle ◽  
Design Engineers ◽  
Running System ◽  
Cad Cam

The article discusses the process of designing the running system of a rail vehicle using CAD and CAM tools as the solutions supporting the process. It describes the particular stages of design taking its final shape: from a preliminary design, through a detailed design, ending with the stage of production. Each stage includes a presentation of how CAD and CAM tools are used to support design engineers in their practice. Keywords: running system, design, CAD, CAM

Assessing Convergence in Predictions of Periodic-Unsteady Flowfields

2006 ◽  
Author(s):  
J. P. Clark ◽  
E. A. Grover
Keyword(s):  
Cross Correlation ◽  
Unsteady Flows ◽  
Digital Signal ◽  
Design Decisions ◽  
Time Resolved ◽  
Design Engineers ◽  
Cross Correlations ◽  
Parseval’S Theorem ◽  
Hot Streak

Predictions of time-resolved flowfields are now commonplace within the gas-turbine industry, and the results of such simulations are often used to make design decisions during the development of new products. Hence it is necessary for design engineers to have a robust method to determine the level of convergence in design predictions. Here we report on a method developed to determine the level of convergence in a predicted flowfield that is characterized by periodic-unsteadiness. The method relies on fundamental concepts from digital signal processing including the discrete Fourier transform, cross-correlation, and Parseval’s theorem. Often in predictions of vane-blade interaction in turbomachines, the period of the unsteady fluctuations is expected. In this method, the development of time-mean quantities. Fourier components (both magnitude and phase), cross-correlations, and integrated signal power are tracked at locations of interest from one period to the next as the solution progresses. Each of these separate quantities yields some relative measure of convergence that is subsequently processed to form a fuzzy set. Thus the overall level of convergence in the solution is given by the intersection of these sets. Examples of the application of this technique to several predictions of unsteady flows from two separate solvers are given. These include a prediction of hot-streak migration as well as more typical cases. It is shown that the method yields a robust determination of convergence. Also, the results of the technique can guide further analysis and/or post-processing of the flowfield. Finally, the method is useful for the detection of inherent unsteadiness in the flowfield, and as such it can be used to prevent design escapes.

scholarly journals Functional Analysis in Embodiment Design - An Investigation of Embodiment Function Relations in Testing Activities

2019 ◽  
Vol 1 (1) ◽  
pp. 1503-1512
Author(s):  
Patric Grauberger ◽  
Katharina Voß ◽  
Sven Matthiesen
Keyword(s):  
Functional Analysis ◽  
Data Acquisition ◽  
Engineering Design ◽  
Student Development ◽  
Development Project ◽  
Embodiment Design ◽  
Development Literature ◽  
And Function ◽  
Data Acquisition And Processing

AbstractTesting contributes to success of engineering design as it plays an important role in gaining insights about the system in development. Literature indicates that for success in engineering design, gaining insights about relations of embodiment and function is crucial. In this contribution, an investigation of how insights about embodiment function relations are gained in testing, is conducted. For this, the testing documentation in a student development project is analysed. The results show a correlation of gaining insights about embodiment function relations to success in engineering design. Potential for improvement in data acquisition and processing is uncovered, which will be used in a succeeding study to investigate this issue in more detail.

scholarly journals WHAT IS SUSTAINABLE DESIGN ENGINEERING (SDE)? PERSPECTIVES FROM A PROBLEM-BASED LEARNING EDUCATION: M.SC. IN SDE AT AALBORG UNIVERSITY COPENHAGEN

2020 ◽  
Vol 1 ◽  
pp. 1825-1834
Author(s):  
A. F. Valderrama Pineda ◽  
M. Niero
Keyword(s):  
Sustainable Design ◽  
Problem Based Learning ◽  
Research Field ◽  
Design Engineering ◽  
Design Engineers ◽  
Master Thesis ◽  
Research Questions ◽  
Pbl Model

AbstractSustainable Design Engineering (SDE) is an emerging research field and the development of programmes aiming at educating sustainable design engineers is very limited. One example is the SDE program at the Aalborg University in Copenhagen, which is based on a Problem Based Learning (PBL) model. In this article we aim to address the following three research questions: i) why Sustainable Design Engineering? ii) what is Sustainable Design Engineering? iii) How can Sustainable Design Engineering be implemented? By means of two examples from master thesis projects in the building and food sectors.

scholarly journals Multibody dynamics analysis of the human upper body for rotorcraft–pilot interaction

2020 ◽  
Vol 102 (3) ◽  
pp. 1517-1539
Author(s):  
Andrea Zanoni ◽  
Alessandro Cocco ◽  
Pierangelo Masarati
Keyword(s):  
Aircraft Design ◽  
Upper Body ◽  
Support Design ◽  
Design Decisions ◽  
Detailed Model ◽  
Strong Base ◽  
Handling Qualities ◽  
Multibody Model ◽  
Scaling Procedure ◽  
Spine Model

AbstractThe study of the biodynamic response of helicopter passengers and pilots, when excited by rotorcraft vibrations that are transmitted through the seat and, for the latter, the control inceptors, is of great importance in different areas of aircraft design. Handling qualities are affected by the proneness of the aircraft to give rise to adverse interactions, an unwanted quality that can be captured by the so-called biodynamic feedthrough. On the other hand, the transmissibility of vibrations, especially from the seat to the head, affects the comfort of pilots and passengers during flight. Detailed and parametrised multibody modelling of the human upper body can provide a strong base to support design decisions justified by a first-principles approach. In this work, a multibody model of the upper body is formed by connecting a previously developed detailed model of the arms to a similarly detailed model of the spine. The whole model can be adapted to a specific subject, identified by age, gender, weight and height. The spine model and the scaling procedure have been validated using the experimental results for seat to head transmissibility. The coupled spine-arms model is used to evaluate the biodynamic response in terms of involuntary motion induced on the control inceptors, including the related nonlinearities.

scholarly journals Design Rules for Hybrid Additive Manufacturing Combining Selective Laser Melting and Micromilling

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5753
Author(s):  
David Sommer ◽  
Babette Götzendorfer ◽  
Cemal Esen ◽  
Ralf Hellmann
Keyword(s):  
Additive Manufacturing ◽  
Selective Laser Melting ◽  
High Speed ◽  
Hybrid Approach ◽  
Laser Melting ◽  
Support Design ◽  
Design Rules ◽  
Geometrical Accuracy ◽  
Design Engineers ◽  
A Charge

We report on a comprehensive study to evaluate fundamental properties of a hybrid manufacturing approach, combining selective laser melting and high speed milling, and to characterize typical geometrical features and conclude on a catalogue of design rules. As for any additive manufacturing approach, the understanding of the machine properties and the process behaviour as well as such a selection guide is of upmost importance to foster the implementation of new machining concepts and support design engineers. Geometrical accuracy between digitally designed and physically realized parts made of maraging steel and dimensional limits are analyzed by stripe line projection. In particular, we identify design rules for numerous basic geometric elements like walls, cylinders, angles, inclinations, overhangs, notches, inner and outer radii of spheres, chamfers in build direction, and holes of different shape, respectively, as being manufactured by the hybrid approach and compare them to sole selective laser melting. While the cutting tool defines the manufacturability of, e.g., edges and corners, the milling itself improves the surface roughness to Ra < 2μm. Thus, the given advantages of this hybrid process, e.g., space-resolved and custom-designed roughness and the superior geometrical accuracy are evaluated. Finally, we exemplify the potential of this particular promising hybrid approach by demonstrating an injection mold with a conformal cooling for a charge socket for an electro mobile.

Comparative Study of Representation Structures for Modeling Function and Behavior of Mechanical Devices

2001 ◽  
Author(s):  
Joshua D. Summers ◽  
Noé Vargas-Hernández ◽  
Zuozhi Zhao ◽  
Jami J. Shah ◽  
Zoé Lacroix
Keyword(s):  
Design For Manufacturing ◽  
Graph Grammars ◽  
Bond Graphs ◽  
Function Representation ◽  
Cad Systems ◽  
Embodiment Design ◽  
Different Types ◽  
Mechanical Devices ◽  
And Function ◽  
And Behavior

Abstract Engineering design is focussed on the development of artifacts and systems to satisfy specified functions. Current CAD systems provide little support integrating the modeling of the function, behavior, and form of designed artifacts throughout the design process. The focus of this paper is to investigate four representations for use in function representation for conceptual design, embodiment design, and design for manufacturing. These four representations include: Graph Grammars, Exemplars, Bond Graphs, and Function Converters. It is shown that different representations are more suited for different phases of design depending upon required design tasks and for representing different types of function knowledge. Finally, an approach for integration of these representations is proposed, synthesizing a hybrid representation based upon the strengths of the four identified strategies.

Conceptual Stress and Conceptual Strength for Functional Design-for-Reliability

2008 ◽  
Author(s):  
Zhaofeng Huang ◽  
Yan Jin
Keyword(s):  
Theoretical Work ◽  
Design Stage ◽  
Future Research ◽  
Functional Design ◽  
Interference Theory ◽  
Design For Reliability ◽  
Embodiment Design ◽  
Parametric Reliability ◽  
Function Design ◽  
And Function

Stress and Strength Interference Theory (SSIT) is a fundamental theory for reliability assessment. It has been widely used as a foundation for design-for-reliability (DFR). However, SSIT and associated methodology and tools, that require detailed definitions of constructional and form structure, are only applicable to an embodiment design. As many researchers have attempted to push DFR upfront to a conceptual and functional design stage, SSIT loses its usefulness, while other equivalent theory and tools for conceptual and functional design-for-reliability do not exist. Therefore, DFR for conceptual and function design becomes ad-hoc that lacks a systematic approach and parametric reliability quantification. In this paper, we first review the literature on stress and strength interference, and then extend the concepts of stress and strength to conceptual stress and conceptual strength that are relevant to conceptual and functional designs. Based on the conceptual stress and conceptual strength, we introduce a Conceptual Stress and Conceptual Strength Interference Theory (CSCSIT) and discuss how it can be applied to support conceptual and function design-for-reliability. We illustrate our theoretical work with a conceptual and function design example. We conclude the paper with a discussion of the future research to further define and substantiate the CSCSIT work.

Sign in / Sign up

Export Citation Format

Share Document