Estimating Production Metric for Ship Assembly Based on Geometric and Production Information of Ship Block Model
Estimating Production Metric for Ship Assembly Based on Geometric and Production Information of Ship Block Model
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基于船舶分段模型的几何和生产信息估算船舶装配的生产指标
DOI：
10.3390/jmse9010039
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发表时间：
2021
影响因子：
2.9
通讯作者：
Young
中科院分区：
文献类型：
--
作者：
W. Choi;Dong;Jong;Min;Young
为了确保造船和海工行业的技术竞争力，各种技术的持续应用和发展至关重要。造船厂的高效调度是一项重要的管理任务，它将材料和人力在适当的时间分配到正确的工作空间。尽管一些大型船厂通过采用先进技术的模拟来确保有效的调度和生产管理，但大多数造船行业，包括中小型船厂，仍然使用基于过去经验的指数。然而，这种被称为基本单元的遗留索引涉及较差的工程逻辑；因此，它并不能恰当地反映造船厂的工作环境，因为造船厂的工作环境随着技术的发展而迅速变化。尽管这引发了对基本单元进行改进的需求，但迄今为止尚未提出明确的解决方案。在本研究中，提出了一种计算组装所需工时的方法，这是准备基本单元的基础。首先，对装配过程进行分析，将装配过程中涉及的各个活动进行量化并制定为工作时间，将其定义为生产指标。基于船舶的计算机块模型，尽可能自动生成计算指标所需的几何特性和生产信息；这是为了建立一个方便的生产计量计算系统。所提出的方法通过定制完全适用于新造船厂。它还可以用作预测新船指标或与现有船舶进行比较的工具。
To secure technological competitiveness in shipbuilding and offshore industries, the continuous application and development of various technologies is essential. Efficient scheduling in shipyards is an important management task, whereby materials and manpower are allocated at the appropriate time and to the correct workspace. Although some large shipyards ensure effective scheduling and production management through simulations employing advanced technologies, most shipbuilding industries, including small- and medium-sized shipyards, continue to use an index based on past experiences. However, this legacy index, termed the basic unit, involves poor engineering logic; therefore, it does not appropriately reflect a shipyard’s working environment, which changes rapidly in response to technological developments. Although this has led to a demand for improvements in the basic unit, a clear solution has not been presented thus far. In this study, a method for calculating the man-hours required for assembly, which is the basis for preparing the basic unit, is proposed. First, the assembly process is analyzed, and individual activities involved in the assembly process are quantified and formulated into working hours, which is defined as a production metric. Based on a ship’s computerized block model, the geometric properties and production information required for calculating the metric are generated automatically as far as possible; this is to establish a convenient production metric calculation system. The proposed method features complete applicability in new shipyards through a customization. It also serves as a tool for predicting the metric of new ships or comparisons with those of existing ships.