Assessment of Changes in Technical Systems and their Effects on Cost and Duration based on Structural Complexity

Rebentisch, Eric; Schuh, Günther; Riesener, Michael; Breunig, Stefan; Pott, Alexander; Sinha, Kalyan B.

doi:10.1016/j.procir.2016.07.033

Cited by 8 publications

(9 citation statements)

References 6 publications

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“…It also results in a large number of reworks and leads to a significant increase in the duration of the development tasks. Therefore, it is necessary to analyze how requirement changes affect the development task schedule [13]. Through this research, the product development task implementation process can be described more accurately, and the development task duration can be more accurately estimated.…”

Section: A Backgroundmentioning

confidence: 99%

“…Maier et al [38] explored the combined effects of progressive iteration, rework, and change propagation in the product design process through discrete event simulation models. Based on structural complexity, Rebentisch et al [13] evaluated changes in the technical system for R&D projects and their impact on cost and duration.…”

Section: ) Requirement Change and Its Impact In The Development Processmentioning

confidence: 99%

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Analysis of Impact of Requirement Change on Product Development Progress Based on System Dynamics

2021

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Requirement changes occur frequently during the product development process owing to diverse and personalized customer needs. This necessitates multiple reworks of the development task, causing delays. Therefore, it is necessary to analyze the impact of requirement change on the progress of product development. First, the development task is divided into three phases: concept development, detail design, and pilot production. Reworks that are a result of development error or changes in information are analyzed along with the reworks caused by requirement changes, which are the focus of analysis. Then, development task activities and relationships are quantitatively described, and a simulation model is built based on the system dynamics method. This is combined with a practice case of product development, and the impact of requirement change on the progress of the development task is analyzed. The analysis shows that requirement changes greatly increase the development task duration and uncertainty of the development task schedule. The development task schedule is most sensitive to the deadline for requirement change, and the impact of a requirement change occurring at the later phase is greater.INDEX TERMS product development, requirement change, development progress, system dynamics.

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Section: A Backgroundmentioning

confidence: 99%

Section: ) Requirement Change and Its Impact In The Development Processmentioning

confidence: 99%

Analysis of Impact of Requirement Change on Product Development Progress Based on System Dynamics

2021

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“…Design changes often occur in the R&D process, which can result in schedule or cost overruns. Rebentisch et al, [23] evaluated the impact of changes in the technical systems of R&D projects as well as their impact on costs and duration based on structural complexity.…”

Section: Literature Reviewmentioning

confidence: 99%

Rework Quantification and Influence of Rework on Duration and Cost of Equipment Development Task

2018

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Rework is a sub-task within equipment development tasks that is revised after initial completion to meet task requirements. Some sub-tasks require multiple rework iterations due to their uncertainty and complexity, or the technology and process needs of the overall task, resulting in inefficient task implementation and resource wastage. Therefore, studying the impact of rework iterations on the duration and cost of development tasks is worthwhile. This study divides rework into foreseeable and hidden types and uses several methods to express and quantify their parameters. The main influencing factors in rework iterations—the uncertainty and complexity of the development task—are quantitatively analyzed. Then, mathematical and mapping models of the dependence between sub-tasks, uncertainty, complexity, and rework parameters are established. The impacts of rework type and rework parameters on the duration and cost of equipment development tasks are analyzed via simulation based on the design structure matrix (DSM). Finally, an example is used to illustrate the influence of different rework types and rework parameters on development tasks’ duration and cost. The results show that the duration and cost of development tasks are greater, their volatility range is wider, and the distribution is more dispersed when both foreseeable and hidden rework are considered.

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“…In case an altered requirement cannot be addressed with the available flexibility of the current system, changes or reconfigurations are required [20,54]. Due to the current developments towards shorter innovation and product life cycles [28,48] as well as customer individualization and higher product complexity [44,50], the need for change occurs more and more often. In order to cope with the increasing frequency of changes, efficient change management processes are considered as crucial [26].…”

Section: Introductionmentioning

confidence: 99%

Modular change impact analysis in factory systems

Bauer

Haase

Sippl

et al. 2020

Prod. Eng. Res. Devel.

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Shorter product innovation cycles, high variant products, and demand fluctuation, as well as equipment life cycles and technology life cycles force manufacturing companies to regularly change their manufacturing system. In order to address this challenge, an efficient and structured change management is required. As change causes and factory elements are connected via a complex network of relations and flows, an essential step in change management is the evaluation of considered adjustments with regard to their effects on the current production system. Depending on the context of the application, change impact analysis must process specific inputs and deliver different results. Current approaches, however, each focus only on selected aspects of the versatility of change effects. To address this challenge, this paper presents a modular approach for the individual design of change impact analysis.

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Assessment of Changes in Technical Systems and their Effects on Cost and Duration based on Structural Complexity

Cited by 8 publications

References 6 publications

Analysis of Impact of Requirement Change on Product Development Progress Based on System Dynamics

Analysis of Impact of Requirement Change on Product Development Progress Based on System Dynamics

Rework Quantification and Influence of Rework on Duration and Cost of Equipment Development Task

Modular change impact analysis in factory systems

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