Concurrent optimization of process parameters and product design variables for near net shape manufacturing processes

Daniele Marini () and Jonathan R. Corney
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Daniele Marini: University of Strathclyde
Jonathan R. Corney: University of Strathclyde

Journal of Intelligent Manufacturing, 2021, vol. 32, issue 2, No 17, 631 pages

Abstract: Abstract This paper presents a new systematic approach to the optimization of both design and manufacturing variables across a multi-step production process. The approach assumes a generic manufacturing process in which an initial near net shape (NNS) process is followed by a limited number of finishing operations. In this context the optimisation problem becomes a multi-variable problem in which the aim is to optimize by minimizing cost (or time) and improving technological performances (e.g. turning force). To enable such computation a methodology, named conditional design optimization (CoDeO) is proposed which allows the modelling and simultaneous optimization of process parameters and product design (geometric variables), using single or multi-criteria optimization strategies. After investigation of CoDeO’s requirements, evolutionary algorithms, in particular Genetic Algorithms, are identified as the most suitable for overall NNS manufacturing chain optimization The CoDeO methodology is tested using an industrial case study that details a process chain composed of casting and machining processes. For the specific case study presented the optimized process resulted in cost savings of 22% (corresponding to equivalent machining time savings) and a 10% component weight reduction.

Keywords: Manufacturing optimization; Process optimization; Design optimization; Near net shape; Genetic algorithm; Machining parameters optimization (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s10845-020-01593-y

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