Design for Lifecycle-Flexibility: Design Objectives that Enhance Coping with Uncertainties Throughout Product Lifecycles

2020 ◽  
Author(s):  
Oliver Moerth-Teoa ◽  
Lukas Schwarz ◽  
Christian Ramsauera
Keyword(s):  
Flexibility Design

Crystal Flexibility Design through Local and Global Motility Cooperation

2020 ◽  
Author(s):  
Ping Wang ◽  
Ken-ichi Otake ◽  
Nobuhiko Hosono ◽  
Susumu Kitagawa
Keyword(s):  
Flexibility Design

Study on using generative and topology design for feature enrichment in Mars Rovers

2021 ◽  
pp. 87-93
Author(s):  
Abhijith Ram C ◽  
D Ajith
Keyword(s):  
Additive Manufacturing ◽  
Solar System ◽  
Weight Reduction ◽  
Topology Design ◽  
Space Travel ◽  
Design For Additive Manufacturing ◽  
And Topology ◽  
Flexibility Design ◽  
The Origin Of Life ◽  
The Universe

Space travel has always been a crucial task. Exploration and experimenting on Planets in our solar system will help us understand the universe better and also, we could find the origin of life. Rovers play an important role in finding these answers. The problem we have at present is not only with technology to explore the universe but also the ability of our rockets to carry rovers to other rocks. Since a large amount of fuel is required for Space travel, we end with very little cargo that can be sent to explore. As additive manufacturing started to play a vital part in Mechanical Science, we are going to try to use that tool to build a Generative design that helps in parts consolidation, weight reduction, increase flexibility, design optimisation and cost consolidation. Since weight is an important aspect, we could reduce the present rover weight and add additional scientific tools to the rover to increase its scope of search and applications. This project focuses on features enrichment in Rovers by optimizing rover weight and design using Design for Additive Manufacturing concept.

A problem-adjusted genetic algorithm for flexibility design

2013 ◽  
Vol 141 (1) ◽  
pp. 56-65 ◽  
Author(s):  
Michael Schneider ◽  
Jörn Grahl ◽  
David Francas ◽  
Daniele Vigo
Keyword(s):  
Genetic Algorithm ◽  
Flexibility Design

Process flexibility: design, evaluation, and applications

2008 ◽  
Vol 20 (1-2) ◽  
pp. 59-94 ◽  
Author(s):  
Mabel C. Chou ◽  
Chung-Piaw Teo ◽  
Huan Zheng
Keyword(s):  
Design Evaluation ◽  
Process Flexibility ◽  
Flexibility Design

Compensating for Dynamic Supply Disruptions: Backup Flexibility Design

2016 ◽  
Vol 64 (2) ◽  
pp. 390-405 ◽  
Author(s):  
Soroush Saghafian ◽  
Mark P. Van Oyen
Keyword(s):  
Supply Disruptions ◽  
Flexibility Design

scholarly journals An Improved L-Shaped Method for Solving Process Flexibility Design Problems

2016 ◽  
Vol 2016 ◽  
pp. 1-15
Author(s):  
Huasheng Yang ◽  
Jatinder N. D. Gupta ◽  
Lina Yu ◽  
Li Zheng
Keyword(s):  
Design Problem ◽  
Stochastic Program ◽  
Design Problems ◽  
Process Flexibility ◽  
Response Dimension ◽  
Flexibility Design ◽  
Different Types ◽  
Effectiveness And Efficiency ◽  
First Time ◽  
Long Chain

Process flexibility, where a plant is able to produce different types of products, is introduced to mitigate mismatch risk caused by demand uncertainties. Thelong chain designproposed by Jordan and Graves in 1995 has been shown to be able to reap most benefits of full-flexibility structure (where each plant is able to produce all products) in balanced systems (where the numbers of products and plants are equal). However, when systems are not balanced or asymmetric or when response dimension is taken into consideration, long chain design may not be the best configuration. Therefore, this paper models the process flexibility design problem in more general settings. The paper considers both balanced and unbalanced systems with asymmetric plants considering response dimension. The problem is formulated as a two-stage stochastic program which is solved by an adapted L-shaped method, combining it with several enhancements. To the best of our knowledge, this is the first time L-shaped method is used to solve the process flexibility design problem. The effectiveness and efficiency of the proposed method and enhancements are evaluated. Finally, the comparison between design methods proposed in this paper and in existing literature shows the superiority of the former.

scholarly journals Co-housing as the way to achieve a good density in the cities – Warsaw case study

2017 ◽  
Vol 8 (3) ◽  
pp. 31-39
Author(s):  
Katarzyna Kosk
Keyword(s):  
Urban Space ◽  
Urban Areas ◽  
Urban Life ◽  
Local Context ◽  
Residential Areas ◽  
Main Hypothesis ◽  
Insufficient Attention ◽  
Flexibility Design ◽  
Architectural Planning ◽  
The Individual

Constant population growth in urban areas is one of the main global problems, and its importance grows with the depletion of non-renewable resources. The efficient, effective and responsible use of land is supposed to be an aim, the achievement of which will profit cities. The crucial question is, how cities can achieve this aim. The author of this article intends to discuss the individual problems which prevent achieving an appropriate density in Warsaw, and find ways of solving or reducing these problems. A proposed main hypothesis is, that the introduction of an alternative type of housing, namely co-housing can become a way to obtain a good density in the cities. Confirmation of this hypothesis is derived on the basis of the analysis of residential estates created following the rules of co-housing developed in Germany, in relation to similar problems. The purpose of the article was also to remind that Warsaw has a rich tradition in creating social efforts developments. The main social ideas was presented on the basic of the project of Polish housing estate designed in the Rakowiec district in Warsaw by H. and Sz. Syrkus, which was established in 1934-1938 The research part of the article was conducted through a comparison of spatial elements of Warsaw, employing the same criteria, which were adopted based on the several, selected characteristics of good density published in the ULI report, such as: mixed use of land, planned, cohesive, liveable, spacious, flexibility, design, green. The conducted comparison demonstrates, that Warsaw has a lot of different problems with obtaining a good density. These are: mono-functional areas in the suburbs, social disparity, the housing market dominated by developers, lack of enough, well-arranged public spaces combined with residential areas, lack of identity neighborhoods, insufficient attention to the local context in the process of designing new buildings, insufficient attention to the environment in terms of creation of buildings, too little green spaces and gardens in the inner city. The presented analyses show that the introducing concept of co-housing can help Warsaw with obtaining a good density. In order to obtain a high quality of the urban space, decisions regarding it should therefore be made simultaneously on three scales: spatial planning, urban planning and architectural planning. Architecture must cooperate with the existing urban fabric. All users of urban life should participate in its creation: development companies, municipal authorities that are responsible for spatial order, architects and residents.

scholarly journals Development of evaporative intercooler heat exchanger for vehicle charge air enhancement using CFD simulation

2019 ◽  
Vol 13 (4) ◽  
pp. 6195-6217
Author(s):  
Pshtiwan M. Sharif ◽  
A. Aziz Hairuddin ◽  
Azizan As'ary ◽  
Khairil Anas Md Rezali ◽  
M. M. Noor ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Pressure Drop ◽  
Cfd Simulation ◽  
Engine Performance ◽  
Cooling Capacity ◽  
Tube Length ◽  
Cooling Load ◽  
Shell Size ◽  
Flexibility Design ◽  
Geometry Configuration

Nowadays, the concern of vehicle manufacturers towards improving engine performance, reducing fuel consumption and exhaust emissions that can cause the pollution of the atmosphere, concerns of strict emission pollution control regulations. Intercooler heat exchanger devices are used for engine charge air temperature improving for engine performance and emissions reduction. This paper introduces a new add-on technology of intercooler heat exchanger- (IHE) developed for utilizing in intake charge air density enhancement in engine combustion for better performance. Presenting a challenge in contributing a framework process for geometry designing development procedure for accurate and reliable scale design size of an air-vapour gas shell-and-tube IHE type, used refrigerant coolant medium. The process presents effective IHE in design time consumption, accurate in scale with higher performance and reliability operation in all environment weather due to reversibility system. A selected design geometry of 60 bunches of tubes with 7.53 mm inner diameter and 150 mm long placed. Effectiveness and design parameter geometry calculation are conditions of the IHE dependent relations of the shell size to tube length in condition of engine space availability control. Pressure drop and cooling capacity of IHE configuration design are proportional to the availability of design space or pressure drop control by the engine. Numerical and simulation results expressed a significant ability of IHE of 2–13 kW cooling load and process applicability for qualified design geometry configuration for selected IHE type. The developments present significant geometry flexibility design with the ability of cooling load or heating effect if reversible system, which offered multipurpose use in widely all vehicle types.

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