Integration of single and dual command operations in non-traditional warehouse design

Abstract

Non-traditional warehouses rise as effective solutions to shorten the travelled distances to store and retrieve unit loads, adding aisles crossing the parallel racks. Multiple warehouse configurations are proposed by the literature discussing the enhancements toward standard layouts. In previous contributions, the authors introduced the diagonal cross-aisle model, concluding about its positive impact on the handling performances under single command operations. This paper extends the previous works, integrating dual command operations, through an original analytic model supporting the design of non-traditional warehouses with a couple of symmetric straight diagonal cross-aisles and random storage assignment strategy. The closed-form expressions to compute the expected cycle travel distances are provided, optimising the aisle position. An industrial case study applies the model, getting distance savings ranging from 11 to 17%, compared to standard layout and further considering the loss of storage space due to the presence of the additional aisles.

Transformative Experiences in Cycling Tourism: A Conceptual Framework

“…The inclusion criteria were predefined, based on research questions and objectives, focusing on the relevance of the articles to the objective of identifying the core elements that could possibly be shared between TT and CT (articles that specifically addressed or explored the dimensions of both were considered relevant). The third eligibility phase consisted of an evaluation of full texts of articles in which irrelevant articles were excluded, which included research on topics other than those desired to be outlined, such as research on improvements in the performance of automated warehousing systems [50] or warehousing designs [51]. Any endeavour that does not suggest relevant publications that emphasise the characteristics of TT or CT is deemed irrelevant and, therefore, excluded from the study.…”

Evaluating the shape and the mid-cross-aisle location in a multi-dock unit-load warehouse design

“…Bortolini ve diğ. [46] tek-ve çift-komutlu operasyonların herhangi bir kombinasyonu için diyagonal koridorun optimum pozisyonu belirlemek için modeller oluşturmuşlardır. Bortolini ve diğ.…”

Performance Analysis of Picking Routing Strategies in the Leaf Layout Warehouse

“…Clark et al [48] Fling-V, fishbone Single Jiang et al [74] Fishbone Single Öztürko glu et al [30] Chevron Single Bortolini et al [31] V-shaped Single Mesa [75] Diamond Single Öztürko glu et al [49] Leaf Single Accorsi et al [76] V-shaped Single Bortolini et al [21] V-shaped Single Zhang et al [50] Twin leaf Single Bortolini et al [77] V-shaped Integration of single and dual Kocaman et al [45] Chevron Single…”