Pengembangan Model Operasional Crossdocking untuk Distribusi Produk Sayur Segar Mempertimbangkan Pengaturan Temperatur dan Peletakan Produk di Dalam Kendaraan Berpendingin

Chandra Bhuana, Afifah Fianda Utami (2017) Pengembangan Model Operasional Crossdocking untuk Distribusi Produk Sayur Segar Mempertimbangkan Pengaturan Temperatur dan Peletakan Produk di Dalam Kendaraan Berpendingin. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Produk sayur segar merupakan salah satu jenis agri perishable product. Oleh karena itu, tingkat kesegaran produk sayur segar merupakan tolak ukur dalam menilai kualitas yang dimiliki oleh produk tersebut. Semakin tinggi tingkat kesegaran produk akan berpengaruh terhadap semakin tinggi nilai jual produk tersebut. Tingkat kesegaran produk sayur segar secara signifikan dipengaruhi oleh durasi waktu dan temperatur lingkungan selama proses pendistribusian produk. Dilatarbelakangi hal tersebut, penelitian ini mengembangkan model operasional cross-docking untuk distribusi produk sayur segar dengan mempertimbangkan pengaturan temperatur secara dinamis dan peletakan produk di dalam kendaraan berpendingin. Penelitian ini bertujuan untuk meminimasi biaya distribusi yang dipengaruhi oleh biaya penggunaan kendaraan berpendingin, biaya transportasi, biaya penurunan kualitas produk, biaya energi, dan biaya pinalti. Secara umum, model dalam penelitian ini terdiri dari 3 tahapan penyelesaian. Tahap I bertujuan untuk mencari rute terbaik dari pusat cross-docking ke titik customer, serta jadwal keberangkatan dari masing – masing kendaraan tersebut. Berdasarkan rute yang terbentuk, maka secara simultan akan diperoleh keputusan konsolidasi order yang dikirimkan oleh beberapa supplier di dalam pusat cross docking. Tahap II bertujuan untuk mencari jadwal keberangkatan kendaraan dari supplier menuju pusat cross-docking yang dapat meminimasi waktu tunggu tiap order akibat proses konsolidasi di pusat cross-docking. Dan tahap terakhir betujuan untuk mencari pengaturan dan peletakan order pada tiap kendaraan, baik dari supplier ke pusat cross-docking, maupun dari pusat cross-docking menuju customer. Pada penelitian ini dilakukan sinkronisasi jadwal keberangkatan kendaraan dari supplier menuju pusat cross-docking dan dari pusat cross docking menuju lokasi order. Selain itu, penelitian ini juga mengembangkan model VRP-TW untuk mencari rute pengiriman order terbaik dari pusat cross-docking ke titik customer. Algoritma penyelesaian tersebut diselesaikan dengan pendekatan optimasi menggunakan software LINGO 16.0. Dari penelitian ini, didapatkan bahwa keputusan terbaik yang dihasilkan sangat bergantung pada komposisi biaya dari fixed-vehicle, biaya transportasi, biaya konsumsi energi, dan harga produk. ====================================================================================== Fresh vegetables product is the one of agri-perishable product type. Hence, the freshness level of vegetables comes to be the measurement of its quality. The higher freshness level of a vegetable, the higher its price will be. The freshness level of vegetables are influenced by distribution time and set temperature during distribution process. So that, in a common practice fresh vegetables products were delivered by refrigerated vehicle to maintain product’s quality. In the other hand, refrigerated vehicle is more costly than common vehicle because there is an energy cost as the impact of cooling system in refrigerated vehicle. The higher temperature set in refrigerated vehicle, the higher its energy cost will be. It will be more complicated if product carried in a vehicle are varies and has different standard temperature. It becomes some trade-off between energy cost and quality-deterioration cost in temperature set decision. Therefore, this research aims to develop a novel model of cross-docking system to distribute fresh vegetables by considering dynamic temperature setting during distribution process and product positioning in refrigerated vehicle. The objective of the proposed model is to minimize total distribution cost that consists of fixed-vehicle cost, transportation cost, quality-deterioration cost, energy cost, and penalty cost. Generally, this proposed model consists of three steps of completion. The first step aims to determine vehicle routing and its departure time from cross-docking center to customer simultaneously. From the obtained route, decision about customer’s order consolidation that supplied by several suppliers at cross docking center will be obtained as well. Second step aims to determine vehicle departure time from supplier to cross-docking center which could minimize order waiting time due to consolidation activity in cross-docking center. And the last step aims to determine optimum set temperature and order position in each vehicle, both from supplier to cross-docking center and from cross-docking center to customer. This research accommodate synchronization of vehicle departure schedule which bring customer’s order both from suppliers to cross-docking center and from cross-docking center to customers. This research also determine optimum vehicle routing from cross-docking center to customer under VRP-TW model. This research used optimization method and considered those problem in mixed integer non-linear programming. Lingo 16.0 was used to solve the problem. The result shows that the best decision is very depend on the price configuration among fixed-vehicle cost, transportation cost, energy cost, and product price.

Item Type: Thesis (Masters)
Uncontrolled Keywords: agri perishable product, dynamic temperature, posisi produk, model operasional cross-docking, VRP-TW
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Industrial Technology > Industrial Engineering > (S2) Master Theses
Depositing User: - AFIFAH FIANDA UTAMI CHANDRA BHUANA
Date Deposited: 31 Mar 2017 02:39
Last Modified: 31 Mar 2017 02:39
URI: http://repository.its.ac.id/id/eprint/2643

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