Three-axes rotation algorithm for the relaxed 3L-CVRP
The purpose of this work is to present a developed three-axes rotation algorithm to improve the solving methodology for the relaxed 3L-CVRP (Three-Dimensional Capacitated Vehicle Routing Problem). Although there are reported works on solving approaches for the relaxed 3L-CVRP that consider produ...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2021
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| Online Access: | http://journalarticle.ukm.my/16475/1/07.pdf http://journalarticle.ukm.my/16475/ https://www.ukm.my/jkukm/volume-331-2021/ |
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| Summary: | The purpose of this work is to present a developed three-axes rotation algorithm to improve the solving methodology for
the relaxed 3L-CVRP (Three-Dimensional Capacitated Vehicle Routing Problem). Although there are reported works on
solving approaches for the relaxed 3L-CVRP that consider product rotation to optimize load capacity, rotation on the
three axes has not been thoroughly studied. In this aspect, the present work explicitly explores the three-axes rotation and
its impact on load capacity optimization. In order to improve the relaxed 3L-CVRP problem, a two-phase solution was
developed. The first phase consists of finding the solution for the CVRP problem, using a demand previously obtained with
a heuristic developed to convert the 3L-CVRP demand into CVRP demand. The second phase is to obtain the loading of the
vehicle using a heuristic developed to load the items using rules to obtain the rotation of the items. The proposed approach
was able to improve the load assignment in 48.1% of well-known 3L-CVRP instances when compared to similar approaches
on the relaxed 3L-CVRP. The outcomes of this research can be applied to transportation problems where package rotation
on the z-axis is an option, and there are not fragile items to load in the vehicles. |
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