Mathematical optimization of the tactical allocation of machining resources for an efficient capacity utilization in aerospace component manufacturing
Paper in proceeding, 2019

In the aerospace industry, with low volumes and many products, there is a critical need to efficiently use available manufacturing resources. Currently, at GKN Aerospace, resource allocation decisions that in many cases will last for several years are to some extent made with a short-term focus so as to minimize machining time, which results in a too high load on the most capable machines, and too low load on the less capable ones. This creates an imbalance in capacity utilization that leads to unnecessary queuing at some machines, resulting in long lead times and in an increase in tied-up capital. Tactical resource allocation on the medium to long-range planning horizon (six months to several years) aims to address this issue by allocating resources to meet the predicted future demand as effectively as possible, in order to ensure long range profitability. Our intent is to use mathematical optimization to find the best possible allocations.



Tactical resource allocation

Multi-objective optimization.

Resource loading


Capacity utilization

Mixed Integer Linear Programming



Sunney Fotedar

Chalmers, Mathematical Sciences, Applied Mathematics and Statistics

Torgny Almgren

GKN Aerospace Sweden

Stefan Cedergren

GKN Aerospace Sweden

Ann-Brith Strömberg

Chalmers, Mathematical Sciences, Applied Mathematics and Statistics

Michael Patriksson

Chalmers, Mathematical Sciences, Applied Mathematics and Statistics

Proceedings of the 10th Aerospace Technology Congress

1650-3686 (ISSN) 1650-3740 (eISSN)

183-188 10.3384/ecp19162021
978-91-7519-006-8 (ISBN)

AEROSPACE TECHNOLOGY Congress 2019. Sustainable aerospace innovation in a globalised world
Stockholm, Sweden,

Tactical resource allocation for efficient capacity Utilization

VINNOVA (2017-04845), 2017-11-10 -- 2022-12-31.

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Production Engineering, Human Work Science and Ergonomics

Computational Mathematics

Other Mathematics

Discrete Mathematics

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