A comparative study of changes across the lifecycle of complex products in a variant and a customised industry

Vianello, Giovanna; Ahmed‐Kristensen, Saeema

doi:10.1080/09544828.2010.542133

Cited by 18 publications

(12 citation statements)

References 16 publications

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“…Yet as discussed by Andreasen & Howard (2012), this process is ill supported by existing methodology. As such, it seems that most late design changes and development lead-time can be traced back to decisions made during embodiment (Vianello et al, 2012). Most optimisation and robust design methods are highly dependent on knowledge that is not necessarily available at an early stage of development and are therefore often applied at least after a preliminary embodiment has been developed (Papalambros & Wilde, 2017), (Ebro & Howard, 2016).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Functional Trade-offs in the Mechanical Design of Integrated Products - Impact on Robustness and Optimisability

Sigurdarson

Eifler

Ebro

2019

Proc. Int. Conf. Eng. Des.

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It is generally accepted in industry and academia that trade-offs between functional design objectives are an inevitable factor in the development of mechanical systems. These trade-offs can have a large influence on the achievable robustness and performance of the final design, with many products only functioning in narrow sweet-spots between different objectives. As a result, the design process of multi- functional products can be prolonged when designers concurrently attempt to find sweet-spots between a number of potentially interdependent trade-offs. This paper will show that designers only have six different approaches available when attempting to manage a trade-off while trying to ensure robustness and a sufficient performance. These fall within one of three categories; accept, optimise, or redesign. Selecting the wrong approach, can result in consequences downstream which can be difficult to predict, amongst others a lack of robustness to geometric variation, constrained performance, and long development lead time. This points to a substantial potential in the synthesis of design methods that support the identification and management of trade-offs in early product development.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Functional Trade-offs in the Mechanical Design of Integrated Products - Impact on Robustness and Optimisability

Sigurdarson

Eifler

Ebro

2019

Proc. Int. Conf. Eng. Des.

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“…Levandowski et al [9] presented a variant design approach for engineering-to-order configuration design. Vianello et al [10] focused on investigating the characteristics of engineering changes. Luh et al [11] proposed an information model to analyze and improve complex design processes and product architecture.…”

Section: Solutions To Customer Requirements (Crs)mentioning

confidence: 99%

Configuration Equilibrium Model of Product Variant Design Driven by Customer Requirements

et al. 2019

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In view of the dynamic change of customer requirements (CRs) during the process of product use, in this paper we propose a Bayesian Nash equilibrium configuration model for product variant design driven by CRs. By analyzing CRs, the complete variant requirements of the products can be obtained. Combined with modularization and parameterization variant design methods, a parametric variant instance is proposed. Since cost and delivery time are affected by the product variant design, firms and customers are established as two decision-making bodies, and Bayesian Nash theory is introduced to the product configuration. The theory takes the product cost and customer satisfaction as the payoff function of the game, and based on the threshold value search of the customer satisfaction it determines the strategy set of the two parties. The Nash equilibrium solution equation is established and solved by a simulated annealing algorithm. The optimal product configuration scheme satisfying the interests of both sides of the game is obtained. Finally, the automatic guided vehicle (AGV) is taken as an example to illustrate the effectiveness and practicability of the method.

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“…During manufacturing process, voids and shrinkage must be avoided. Voids and porosity are one of the most critical problems during the manufacturing process [60,61]. It is proposed, thatprimary structures (wings, fuselage) must be resistant to fatigue and environmental effects (expensive materials).…”

Section: Manufacturing Requirements and Processes For Cfcmentioning

confidence: 99%

Untitled

2018

MSEJ

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The main objective of the paper is to present the main criteria for the selection of carbon fiber composite materials for fighter aircraft. Nowadays, more than ever, customers for fighter aircraft demands a highly maneuverable, agile aircraft that is reliable and easy to maintain. Composite materials are, besides metal alloys, the most important materials for aerospace application. Application of carbon fiber thermosets as airframe materials offersa significant weight and cost reductions in manufacturing process. In the last decades, such materials overcome more than 15% and 50% of the structural weight of civil and military aircraft, respectively. Weak points in the basic materials, i.e. fiber (strain, stiffness) and resin (lowviscosity) are now well known and improvements led to a new generation of carbon fiber composites. Several suppliers are offering in their chemical composition, mechanical properties and processing. This paper describes the selection criteria based on fighter aircraft components with respect to design and manufacturing requirements and presents a comparison of different carbon fiber composites.

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A comparative study of changes across the lifecycle of complex products in a variant and a customised industry

Cited by 18 publications

References 16 publications

Functional Trade-offs in the Mechanical Design of Integrated Products - Impact on Robustness and Optimisability

Functional Trade-offs in the Mechanical Design of Integrated Products - Impact on Robustness and Optimisability

Configuration Equilibrium Model of Product Variant Design Driven by Customer Requirements

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