A simulation study of conwip versus MRP at Westinghouse

Roderick, Larry M.; Toland, Joel A.; Rodríguez, Francisco Pascual Caravaca

doi:10.1016/0360-8352(94)90058-2

Cited by 16 publications

(9 citation statements)

References 6 publications

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“…Muckstadt and Tayur [21,22] , Bonvik et al [7] , Jodlbauer and Huber [16] 등의 연구도 Spearman의 주장과 일치하는 분석결과를 제 시하였다. 그러나 이들의 연구결과와는 정반대로 Gstettner and Kuhn [14] 는 [24] 가 납기와 사이클타임 측면에서 CONWIP 을 MRP와 비교했고 Chang and Yih [8] 은 시뮬레이션을 통해 CONWIP을 변형된 MRP와 비교했다.…”

Section: 기존 연구unclassified

Comparison of DBR with CONWIP in a Production Line with Constant Processing Times

Lee¹,

Seo

2012

Journal of the Korea Society for Simulation

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We compared a DBR(drum-buffer-rope) system with a CONWIP(constant work-in-process) system in a production line with constant processing times. Based on the observation that a WIP-controlled line production system such as DBR and CONWIP is equivalent to a m-node tandem queue with finite buffer, we applied a max-plus algebra based solution method for the tandem queue to evaluate the performance of two systems. Numerical examples with 6 workstations were also used to demonstrate the proposed analysis. The mathematical analyses support that CONWIP outperforms DBR in terms of expected waiting time and WIP. Unlike the CONWIP case, sequencing workstations in a DBR affects the performance of the system. Delaying a bottleneck station in a DBR reduces expected waiting time.

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Section: 기존 연구unclassified

Comparison of DBR with CONWIP in a Production Line with Constant Processing Times

Lee¹,

Seo

2012

Journal of the Korea Society for Simulation

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“…A literatura sobre o CONWIP (tanto CNE quanto o H) é relativamente vasta. Dentro desta literatura, merecem destaque a utilização do CONWIP para a gestão da cadeia de suprimentos (OVALLE;MARQUEZ, 2003) e estudos que trazem comparações entre a performance do CONWIP e a de outros SCO, como por exemplo: CONWIP e Kanban (TAKAHASHI; MYRESHKA, 2005;NAKAMURA, 2002); CONWIP e MRP (RODERICK et al, 1994); CONWIP, Kanban e MRP (HUANG et al, 1998); CONWIP, Kanban, estoquebase e combinação Kanban-CONWIP (BONVIK et al, 1997); CONWIP e DBR (KOH; BULFIN, 2004); dentre muitos outros.…”

Section: Sistema Conwip H (Híbrido)unclassified

Sistemas de coordenação de ordens: revisão, classificação, funcionamento e aplicabilidade

Fernandes

Filho

2007

Gest. Prod.

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O foco deste trabalho são os ordering systems, os quais são sistemas de informação que programam ou organizam as necessidades em termos de componentes e materiais e/ou controlam a emissão/liberação das ordens de produção e compra, podendo conter ou não regras de seqüenciamento das ordens. Dentro deste contexto, o presente artigo tem por objetivos: apresentar uma nova nomenclatura para os ordering systems, sistemas de coordenação de ordens de produção e compra (SCO); apresentar uma tipologia que permita classificar os diversos sistemas de forma racional; destacar alguns sistemas altamente promissores em termos de aplicação e que são relativamente desconhecidos no Brasil e, trazer à tona um tema importantíssimo dentro do planejamento e controle da produção (PCP) e que está um tanto esquecido na literatura científica nacional.

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“…The choice of the production system must be in accordance with the performance objectives of the organization; however, each productive environment has its peculiarities, which makes this choice not trivial. Some authors, such as Wolfsgruber and Lichtenegger (2016), Gong et al (2014), Pettersen and Segerstedt (2009), Takahashi and Hirotani (2005), Krishnamurthy et al (2004), Geraghty and Heavey (2003), Huang et al (1998), Bonvik et al (1997), Roderick et al (1994), Spearman and Zananis (1992), Spearman et al (1990), and Lee (1989) proposed comparative experimental studies, pointing out the differences of production systems in specific environments. It is a consensus among the authors that the performance of different systems may be different in each productive environment, although the characteristics pertinent to the type of scheduling are kept similar in all experiments.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of pulled, pushed and hybrid production through simulation: a case study

Pinheiro

Cleto

Zattar

et al. 2019

BJO&PM

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Goal: This work aims to compare performance indicators of the pulled, pushed and hybrid production schedule, with those of a specific production environment of the printing industry, using computational simulation. Design / Methodology / Approach: Through a case study, it was possible to create a conceptual model, from which a computational model that was verified and validated as representative of the real productive system was developed. There are generated fictional models of the production environments to compare cycle time, work in process and attendance to the demand, varying the quantity of orders confirmed by the final clients. Results: The CONWIP (Constant Work in Process) system presented very high cycle times and failure to meeting the demand, although it was kept in the format of the work in process. The actual real system and the pushed system obtained the worst performances regarding the work in process, besides presenting failures to meeting the demand and very high cycle times. The pulled system obtained the best performance to meet the demand, and cycle times adequate to the production requirement and moderate work in process. Limitations of the investigation: The application of the methodology was limited to the study of a single productive system of a print industry and cannot be extended to the entire sector. Practical implications: This work presents a practical application of computer simulation tools applied to Production Planning and Controls which may be replicated by other organizations or educational institutions for system performance analysis in different scenarios. Originality / Value: The original contribution of this work is the application of computational simulation for a production system in a print industry without interference in a real system.

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A simulation study of conwip versus MRP at Westinghouse

Cited by 16 publications

References 6 publications

Comparison of DBR with CONWIP in a Production Line with Constant Processing Times

Comparison of DBR with CONWIP in a Production Line with Constant Processing Times

Sistemas de coordenação de ordens: revisão, classificação, funcionamento e aplicabilidade

Performance evaluation of pulled, pushed and hybrid production through simulation: a case study

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