| 1. |
- Boart, Patrik, et al.
(författare)
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Enabling variation of manufacturing process parameters in early stages of product development
- 2006
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Ingår i: Proceedings of IMECE 2006. - : American Society of Mechanical Engineers. - 0791847675 ; , s. 1165-1173
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Konferensbidrag (refereegranskat)abstract
- Currently, mechanical design of aero engine structural components is defined by dimensioning of Design Parameters (DP's) to meet Functional Requirements (FR's). FR's are typically loads, geometrical interfaces and other boundary conditions. Parameters from downstream processes are seldom actually seen as DP's. This paper proposes that downstream process parameters are treated as DP's which calls for engineering methods that can define and evaluate these extended set of DP's.Using the proposed approach manufacturing process alternatives can be used as DP's in early stages of product development. Both the capability to quantitatively assess impact of varying manufacturing DP's, and the availability of these design methods are needed to succeed as an early phase design method. One bottleneck is the preparation time to define and generate these advanced simulation models.This paper presents how these manufacturing process simulations can be made available by automating the weld simulation preparation stages of the engineering work. The approach is based on a modular approach where the methods are defined with knowledge based engineering techniques-operating close to the CAD system.Each method can be reused and used independently of each other and adopted to new geometries. A key advantage is the extended applicability to new products, which comes with a new set of DP's.On a local level the lead time to generate such manufacturing simulation models is reduced with more than 99% allowing manufacturing process alternatives to be used as DP's in early stages of product development.
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| 2. |
- Boart, Patrik, et al.
(författare)
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Knowledge enabled pre-processing for structural analysis
- 2006
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Ingår i: Proceedings of the 1st Nordic Conference on Product Lifecycle Management. - Göteborg : Chalmers tekniska högskola. - 9197507938 ; , s. 89-97
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Konferensbidrag (refereegranskat)
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| 3. |
- Boart, Patrik
(författare)
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Life cycle simulation support for functional products
- 2005
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Business to business cooperation is undergoing large changes results in new requirements on how to develop products. This will force companies to optimize their part of the product system relating to the total product system. Aerospace business agreements are being made on a life cycle basis where the actual product ownership often remains with the manufacturer. The revenue for aero engine manufacturers and their engine programs appear late in the engine life cycle, not during market introduction where large discounts are common. An engine developed for the sale of spare parts is not optimized for the owner. The key when owning and producing engines is to develop engines with minimum life cycle cost. As the development of functional (Total Care) products both includes the development of the hardware and accompanying services, people from all areas and their knowledge will be needed to take decisions. This will especially be important in the conceptual engineering design phases where knowledge of the design requirements and constraints usually is imprecise and incomplete and that there exist few support tools that can support this phase. Knowledge Enabled Engineering include Knowledge Based Engineering and other knowledge rich strategies and aim to support or perform engineering activities with the help of available techniques and methods. The purpose of Knowledge Enabled Engineering is to allow automation of engineering work. The Knowledge Enabled Engineering approach presented embeds methods used later (downstream) to simulate effects making information not readily available early on. There exist a number of decision support systems where knowledge from a few disciplines has been modelled. With a life cycle focus this is not enough. The basis needed to make early decisions needs knowledge from all phases of the products life cycle. The work presented shows how a decision support system can be used to capture and present knowledge extracted from performance, manufacturing and maintenance activities creating a better foundation for decisions regarding life cycle issues. The method described shows a way to simulate business scenarios and there product solutions based on a technical basis normally found later (downstream) in the product development process. It is shown how a decisions support system can be used to capture downstream knowledge from design, manufacturing and maintenance activities allowing life cycle effects to be simulated already in the conceptual phase. Engineers can then change the design and directly assess the life cycle cost already in the conceptual phase allowing fast iterations and thereby design the life cycle of a product based on knowledge from design, manufacturing and maintenance disciplines. Optimization in a global perspective will allow the right decision to be made in early phases with a clear understanding of how life cycle issues is affected depending on choices made.
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| 4. |
- Boart, Patrik, et al.
(författare)
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Making cross-company information available in the conceptual phase
- 2006
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Ingår i: Computer-Aided Design and Applications. - : CAD Solutions, LLC. - 1686-4360. ; 3:6, s. 675-682
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Tidskriftsartikel (refereegranskat)abstract
- In new business-to-business relations within the aerospace industry, companies join together in partnership to perform product development, taking full responsibility for their product during its entire life cycle. This paper describes a method on how these downstream effects can be simulated in a cross-company collaborative situation. A case study was conducted where a jet engine component manufacturer and a tool manufacturer used each other's expertise in a collaborative approach to make "holes" in a jet engine component. Ten conceptual jet engine frames were collaboratively evaluated within two working days. The distributed engineering environment creates a new situation for the partnership companies by allowing them to work efficiently within the activities that have been incorporated into the distributed engineering environment. Downstream effects of the overall system can then be evaluated already in the conceptual phase, thus allowing the partners to design the life cycle properties of their common product
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| 5. |
- Boart, Patrik, et al.
(författare)
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Multidisciplinary design tool for conceptual design and evaluation
- 2005
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Ingår i: 15th International Conference on Engineering Design - ICED 05. - Barton : Institution of Engineers, Australia.
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Konferensbidrag (refereegranskat)abstract
- The actual product ownership often remains with the manufacturer as functional (total care) products emerge in aerospace business agreements. The business risk is then transferred to the manufacturer why downstream knowledge needs to be available in the concept phase to consider all product life cycle aspects. The aim of this work is to study how a multidisciplinary design tool can be used to embed downstream processes for conceptual design and evaluation allowing simulation of life cycle properties. A knowledge enabled engineering approach was used to capture the engineering activities for design and evaluation of jet engine component flanges. For every design change, cost of manufacturing operations, maintenance and performance aspects can be directly assessed. The design tool assures that the engineering activities are performed accordingly to company design specification which creates a better control over the process quality. It also creates a better understanding enabling the engineers to optimize the concept in real time from an overall product life cycle view. The new tool will be the base for optimize the total product system and will be used not only between companies but also between product development departments in large global companies.
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| 6. |
- Boart, Patrik
(författare)
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The enabling of product information in the conceptual phase
- 2007
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- It is implied that Functional Products fundamentally change how the product development process is performed in global settings. An extended product definition together with the need to evaluate product properties earlier creates new demands on engineering methods and tools needed during the product development process. A trend is for the customer to want to buy extended solutions provided by many companies in a network. The companies are then forced to cooperate as early as possible in the product development phase to minimize the business risks. Functional products increase the amount of design parameters considered in the conceptual phase. Hardware, manufacturing, service and business parameters are all essential. However, there is a lack of methods to vary the extended set of design parameters in the conceptual design stage. The aerospace industry as well as other manufacturing companies with an increased product complexity develops their offers together globally, meaning that a design parameter can be distributed between several partners. Changing a parameter forces each partner to perform the necessary activities and share the result to gather the overall view. Inserting the functional product perspective into the aerospace industry creates totally new demands on the product development process with a life cycle perspective. Design parameters not normally involved in the early phases should now be considered. The purpose of this research is to develop a method that can enable this extended set of design parameters to be evaluated and manipulated in the early stages of product development. The research strategy is to combine participatory action research process with a case study approach and to verify the approach close to technology and product development activities in industries. The research approach is to combine KBE, CAD and CAE technologies to create a more generative product model, which can automate activities in the conceptual phase of the product development process. Using a generative technical product model that adapts different design parameter settings extends the set of product properties to be evaluated. The generative model can also be used globally and distributed, enabling the evaluation of an extended set of design parameters in a global and distributed conceptual phase. With an increased ability to generate different models more product life cycle properties can be simulated and increase the conceptual information basis. This improves the ability to address product life cycle properties for functional product offers already in the conceptual phase.
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| 7. |
- Larsson, Tobias, et al.
(författare)
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Project: Functional Jet Engine Components - NFFP
- 2007
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Annan publikation (populärvet., debatt m.m.)abstract
- National Aviation Engineering Research Programme Project: NFFP490 - Functional Jet Engine Components When selling a product today it contains much more than just hardware. Without a service part the product would be of no value for the customer. To be able to evaluate and choose the best concept the overall package need to be reconsidered. The aim for this project is to develop a methodology that reconsider both hardware and service in the conceptual phase of jet engine component
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| 8. |
- Sandberg, Marcus, et al.
(författare)
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Functional product life-cycle simulation model for cost estimation in conceptual design of jet engine components
- 2005
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Ingår i: Concurrent Engineering - Research and Applications. - : Sage Science Press (UK). - 1063-293X .- 1531-2003. ; 13:4, s. 331-342
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Tidskriftsartikel (refereegranskat)abstract
- As functional (total care) products emerge in the jet engine industry, the need for product life-cycle models capable of definition and evaluation of life cycle properties increases, since functional products (FP) includes both hardware and service. Recent life-cycle models are intended for hardware products and mostly handle design and manufacturing knowledge. The aim of this article is to present a design approach that extends the evaluation capabilities beyond classical hardware design and manufacturing evaluation. The focus has been to introduce evaluation of manufacturing and post-manufacturing activities in evaluation of conceptual designs. For this purpose, a model has been proposed to handle the information flow between teams when developing structural jet engine components. A case study, in which the proposed model was used in cooperation with a jet engine component manufacturer, is presented. Aspects concerning design, manufacturing, performance, and maintenance of jet engine flanges were included in the example by means of a knowledge based engineering (KBE)-system coupled to databases and spreadsheets. The model is more suitable than recent work for the development of hardware parts of functional products (HFP), since knowledge from more product development disciplines is included. As the engineer changes the design and directly assesses the life-cycle cost (LCC) and how the changes impact the interface to other jet engine components, more knowledge on the impact of design decisions is available at hand for the engineering designer than without the model
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| 9. |
- Sandberg, Marcus, et al.
(författare)
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Projekt: Strukturell konceptuell konstruktion och analys av helajetmotorer - en METodik för OPtimering, Integration och Automatisering (METOPIA)
- 2009
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Annan publikation (populärvet., debatt m.m.)abstract
- Detta projekt är en fortsättning på förstudieprojektet NFFP4202 - Helmotormodell för systemanalys av mekaniska egenskaper där en plattform, samt en pilot som demonstrerade plattformens förmåga i ett industriellt sammanhang, utvecklades. Detta projekt fokuserar på vidareutveckling av den framtagna plattformen med optimeringsteknologi och simuleringsdriven produktutvecklingsmetodik för att via produktdefinitionen (jetmotorkomponenterna) balansera flera olika funktionsbehov (t ex strukturdynamiska, aerodynamiska, termodynamiska) och skapa möjligheter till effektivare analyser av helmotorkoncept. Resultatet är en metodik innefattande systemangreppssätt, modelluppbyggnad, modellarkitektur samt analys, som tillämpas på ett realistiskt scenario genom en pilot.
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