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KEYWORDS

Distribution network;

Relief items;

Disaster relief logistics;

CO2 Emission;

Robust fuzzy optimization.

Abstract

The present study aims to propose a multi-objective mixed integer mathematical programming model for designing a relief items distribution network in sustainable disaster relief logistics. The first objective function minimizes the total network costs. Which are divided into two parts: 1. Relief costs including (transportation costs, inventory costs and fixed costs of facilities) 2. Social costs (deprivation cost). The second objective function minimizes the amount of pollution generated by the network. Considering the related literature review, this is the first study that to propose a robust fuzzy optimization approach for relief items distribution network design problem considering environmental (CO2 emission), social (deprivation cost) and economic impacts under reliability and uncertainty. Then, the multi-objective model was solved using the multi-choice goal programming. To indicate the validity of the proposed model, a case study was evaluated based on real data (2019 flood in Sari city, Mazandaran province). Using the proposed model, decision-makers and managers are able to make strategic and tactical decisions with the least cost and time, and in relief planning can enhance the structure of distribution networks and inventory and reduce victims' dissatisfaction.

1. Introduction

Natural disasters are uncontrollable conditions that directly affect human lives. Despite research and technological advances, predicting the time or location of natural disasters is not possible [1]. The international disaster database provides the total number of natural disasters and affected people, which have significantly increased since 1900 [2]. Large-scale natural disasters have frequently occurred, including earthquakes and tsunami in Indonesia in 2018, earthquake in Nepal in 2015 that lead to human casualties, financial damages, disruption in the environment, and consequently adverse impacts on sustainable development [3]. Since the number of largescale natural disasters has extremely increased, the vital need for a sustainable disaster supply chain to save human lives, reduce human suffering, and help the development as much as possible has remained an issue [2]. Therefore, it is vital to take the economic, social, and environmental issues into account in the disaster relief logistics problem to reduce the harmful effects of a disaster [4]. During natural disasters, the fundamental issue that has lately caught the attention of many researchers is to decide on the proper location...

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