A more sustainable industry by considering leftovers in cutting processes under uncertainty
J. F. Oliveira, M. A. Carravilla, B. B. Oliveira, A. Cherri, D. do Nascimento, L. H. Cherri
In cutting processes, one of the strategies to reduce raw material waste is to generate leftovers that are large enough to return to stock for future efficient use, leading to a more sustainable industry. However, in several situations, future demand is unknown and evaluating the best length for the leftovers is challenging.
In this presentation, we approach the cutting stock problem with the possibility of generating leftovers as a two-stage stochastic program with recourse.
When dealing with both the one-dimensional and the two-dimensional variants of the problem, we resort both to mathematical models and meta-heuristics.
We ran computational experiments with randomly generated instances, considering a representative set of scenarios with a varying probability distribution. The results validate the efficiency of the proposed approaches and allow us to derive insights on the value of modeling and tackling uncertainty in this problem.
Keywords: cutting problems, leftovers, stochastic programming, sustainability
Scheduled
Invited Session APDIO-SEIO. Operations Research and Sustainability
June 7, 2022 6:40 PM
A16
Other papers in the same session
A. Barbosa-Povoa
F. Parreño Torres, R. Alvarez-Valdes, C. Parreño-Torres
A. A. Juan, J. Panadero, E. Perez-Bernabeu, J. Faulin, P. Carracedo
I. Giménez Palacios, F. Parreño Torres, R. Alvarez-Valdes, C. Paquay, B. Brito Oliveira, M. A. Carravilla, J. F. Oliveira
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6/8/22
Visit Alhambra
Tomorrow, Thursday, we will visit the Alhambra. 1. At 7:00 p.m., buses will start leaving from the door of the Hotel Granada Center (in front of the door of the Faculty of Sciences) 2. Upon arrival, groups with guides will be organized. 3. There will be groups in English language. These groups will wait at the destination until the arrival of all buses. 4. After the visit to the Alhambra we will walk to the Carmen de los Mártires to have a cocktail. 5. On the way back, we can go back by bus, which will leave from the same place where they left us at the Alhambra. 6. Although the way to the Alhambra by bus seems long, it really is close to the city. We invite you, whoever wishes, to go down for a pleasant walk. 7. Do not forget to take your Alhambra ticket and your identity card or passport. The document must be the same whose number matches the ticket number you have.
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5/31/22
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5/27/22
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5/23/22
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5/16/22
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