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Designing a warehouse internal layout using a parabolic aisles based method 基于抛物线通道的仓库内部布局设计方法
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.396
Z. Y. Zhang, Y. Liang, Y. Hou, Q. Wang
Refined layout is a basis of warehousing efficiency. Straight aisle is a typical feature of current warehouse internal layouts. The purpose of this paper is to explore the possibility of using curve aisles for warehouse layout. By Choosing typical non-traditional layouts and transforming their inclined cross-aisle trajectory into parabola, two parabolic aisle layouts, parabolic Flying-V and parabolic Fishbone, are constructed. For unit-load warehouses, based on the morphological characteristic analysis and the parabolic types selection, the picking distance model and the cross-aisle length formula are presented. Interval Numerical Simulation Method (INSM) and Genetic Algorithms (GA) are adopted to solve the model respectively in order to verify the results. This research breaks through the realistic situation of straight aisle leading warehouse layout, and enriches the relevant layout theory. The calculation results of 100 warehouses with different sizes show that the picking distance of parabolic Flying-V could be reduced by 0.22-0.62 % compared with the straight layout, and the theoretical possible improvement space has been compressed by 2.42-12.26 %. Its length of cross-aisle is shortened by -0.03-3.10 %. The picking distance of parabolic Fishbone could be only reduced by 0.02-0.04 %. The theoretical possible improvement space has been compressed by 1.27-1.83 %. But its length of cross-aisle will increase by 4.63-19.50 % significantly. We believe that the layout of non-rectangular complex special-shaped warehouses based on curve trajectory aisles would become an important research topic. In addition, after some necessary modifications to the objectives and constraints, the proposed method in this paper may also be used for the arrangement of machines and devices in a workshop in principle.
精细化布局是仓储效率的基础。直通道是当前仓库内部布局的典型特征。本文的目的是探讨在仓库布局中使用曲线通道的可能性。通过选择典型的非传统布局,将其倾斜的跨通道轨迹转化为抛物线,构造了抛物线式Flying-V和抛物线式Fishbone两种抛物线式通道布局。对于单位负荷仓库,在形态特征分析和抛物线型选择的基础上,提出了拣货距离模型和跨通道长度公式。分别采用区间数值模拟方法(INSM)和遗传算法(GA)对模型进行求解,验证结果。本研究突破了直通道超前仓库布局的现实情况,丰富了相关布局理论。对100个不同规模的仓库进行了计算,结果表明,抛物线飞- v的拣货距离比直线布局可缩短0.22 ~ 0.62%,理论可能的改进空间压缩了2.42 ~ 12.26%。其跨通道长度缩短-0.03- 3.10%。抛物面鱼骨的采收距离仅缩短0.02 ~ 0.04%。理论上可能的改进空间被压缩了1.27- 1.83%。但其跨通道长度将显著增加4.63% ~ 19.50%。认为基于曲线轨迹通道的非矩形复杂异形仓库布局将成为一个重要的研究课题。此外,本文提出的方法在对目标和约束条件进行必要的修改后,原则上也可用于车间内机器设备的布置。
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引用次数: 4
Modelling and optimization of sulfur addition during 70MnVS4 steelmaking: An industrial case study 70MnVS4炼钢过程中硫添加的建模与优化:一个工业案例研究
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.398
M. Kovačič, B. Leser, M. Brezocnik
Štore Steel Ltd. is one of the major flat spring steel producers in Europe. Among several hundred steel grades, 70MnVS4 steel is also produced. In the paper optimization of steelmaking of 70MnVS4 steel is presented. 70MnVS4 is a high-strength microalloyed steel which is used for forging of connecting rods in the automotive industry. During 70MnVS4 ladle treatment, the sulfur addition in the melt should be conducted only once. For several reasons the sulfur is repeatedly added and therefore threatening clogging during continuous casting and as such influencing surface defects occurrence and steel cleanliness. Accordingly, the additional sulfur addition was predicted using linear regression and genetic programming. Following parameters were collected within the period from January 2018 to December 2018 (78 consequently cast batches): sulfur and carbon cored wire addition after chemical analysis after tapping, carbon, manganese and sulfur content after tapping, time between chemical analysis after tapping and starting of the casting, ferromanganese and ferrosilicon addition and additional sulfur cored wire addition. Based on modelling results it was found out that the ferromanganese is the most influential parameter. Accordingly, 12 consequently cast batches (from February 2019 to October 2019) were produced with as lower as possible addition of ferromanganese. The additional sulfur addition in all 12 cases was not needed. Also, the melt processing time, surface quality of rolled material and sulfur cored wire consumption did not change statistically significantly after reduction of ferromanganese addition. The steel cleanliness was statistically significantly better.
Štore钢铁有限公司是欧洲主要的平板弹簧钢生产商之一。在数百种钢种中,还生产70MnVS4钢。本文介绍了70MnVS4钢的炼钢工艺优化。70MnVS4是一种高强度微合金钢,用于汽车行业连杆的锻造。70MnVS4钢包处理过程中,熔体加硫应只进行一次。由于多种原因,在连铸过程中反复添加硫会造成堵塞,从而影响表面缺陷的发生和钢的清洁度。据此,利用线性回归和遗传规划对硫的添加量进行了预测。在2018年1月至2018年12月期间(共78个铸造批次)收集了以下参数:攻丝后化学分析后添加硫和碳芯线,攻丝后碳、锰和硫含量,攻丝后化学分析与开始铸造之间的时间,添加锰铁和硅铁以及添加额外的硫芯线。根据模拟结果,发现锰铁是影响最大的参数。因此,在2019年2月至2019年10月的12个铸造批次中,锰铁的添加量尽可能低。在所有12种情况下,都不需要额外添加硫。减少锰铁添加量后,熔体加工时间、轧制材料表面质量和硫包芯线材消耗无统计学意义的变化。钢的洁净度有统计学上的显著改善。
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引用次数: 2
Change impact analysis of complex product using an improved three-parameter interval grey relation model 基于改进三参数区间灰色关联模型的复杂产品变更影响分析
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.393
W. Yang, C. D. Li, Y. H. Chen, Y. Yu
Change impact evaluation of complex product plays an important role in controlling change cost and improving change efficiency of engineering change enterprises. In order to improve the accuracy of engineering change impact evaluation, this paper introduces three-parameter interval grey number to evaluate complex products according to the data characteristics. The linear combination of BWM and Gini coefficient method is used to improve the three-parameter interval grey number correlation model. It is applied to the impact evaluation of complex product engineering change. This paper firstly constructs a multi-stage complex network for complex product engineering change. Then the engineering change impact evaluation index system is determined. Finally, a case analysis was carried out with the permanent magnet synchronous centrifugal compressor in a large permanent magnet synchronous centrifugal unit to verify the effectiveness of the proposed method.
复杂产品变更影响评价对工程变更企业控制变更成本、提高变更效率具有重要意义。为了提高工程变更影响评价的准确性,根据数据特点,引入三参数区间灰数对复杂产品进行评价。采用BWM与基尼系数的线性组合方法对三参数区间灰数关联模型进行了改进。将其应用于复杂产品工程变更的影响评价。本文首先构建了复杂产品工程变更的多阶段复杂网络。进而确定了工程变更影响评价指标体系。最后,以某大型永磁同步离心机组的永磁同步离心压缩机为例进行了算例分析,验证了所提方法的有效性。
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引用次数: 1
Bone drilling with internal gas cooling: Experimental and statistical investigation of the effect of cooling with CO2 on reduction of temperature rise due to drill bit wear 内气冷却骨钻:CO2冷却对降低钻头磨损温升效果的实验与统计研究
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.394
E. Shakouri, H. H. Hassanalideh, S. Fotuhi
Bone drilling is a major stage in immobilization of the fracture site. During bone drilling operations, the temperature may exceed the allowable limit of 47 °C, causing irrecoverable damages of thermal necrosis and seriously threatening the fracture treatment. One of the parameters affecting the temperature rise of the drilling site is the frequency of applying the drill bit and its extent of wear. The present study attempted to mitigate the effect of drill bit wear on the bone temperature rise through the internal gas cooling method via CO2 and to reduce the risk of incidence of thermal necrosis. To this end, drilling tests were conducted at three rotational speeds 1000, 2000, and 3000 r·min-1 in two states of without cooling and with internal gas cooling by CO2 through an internal coolant carbide drill bit, along with six drill bit states (new, used 10, 20, 30, 40, and 50 times) on a bovine femur bone. The results indicated that in the internal gas cooling state, as the number of drill bit applications increased from the new state to more than 50 times, the temperature of the hole site increased on average by ΔT = 2-3 °C (n = 1000 r·min-1), ΔT = 5-8 °C (n = 2000 r·min-1), and ΔT = 5-7 °C (n = 3000 r·min-1). Furthermore, the internal gas cooling method was able to significantly reduce the effect of the drill bit wear on the temperature rise of the drilling site and to resolve the risk of incidence of thermal necrosis regardless of the process parameters for drilling operations.
骨钻孔是骨折部位固定的主要步骤。在骨钻孔作业中,温度可能超过47℃的允许极限,造成不可恢复的热坏死损伤,严重威胁骨折治疗。影响钻井现场温升的参数之一是钻头的使用频率和磨损程度。本研究试图通过CO2内部气体冷却的方法来减轻钻头磨损对骨温升的影响,降低热坏死的发生风险。为此,在1000、2000和3000 r·min-1的三种转速下,在无冷却和通过内部冷却剂碳化物钻头通过CO2进行内部气体冷却两种状态下,以及在牛股骨上进行了六种钻头状态(新、使用10次、20次、30次、40次和50次)的钻探试验。结果表明,在内部气体冷却状态下,随着钻头使用次数从新状态增加到50次以上,孔位温度平均升高ΔT = 2-3℃(n = 1000 r·min-1), ΔT = 5-8℃(n = 2000 r·min-1), ΔT = 5-7℃(n = 3000 r·min-1)。此外,内部气体冷却方法能够显著降低钻头磨损对钻井现场温升的影响,并解决了在任何钻井作业工艺参数下发生热坏死的风险。
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引用次数: 2
Hybrid ANFIS-Rao algorithm for surface roughness modelling and optimization in electrical discharge machining 电火花加工表面粗糙度建模与优化的混合anfiss - rao算法
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.390
N. Agarwal, N. Shrivastava, Mohan K. Pradhan
Advanced modeling and optimization techniques are imperative today to deal with complex machining processes like electric discharge machining (EDM). In the present research, Titanium alloy has been machined by considering different electrical input parameters to evaluate one of the important surface integrity (SI) parameter that is surface roughness Ra. Firstly, the response surface methodology (RSM) has been adopted for experimental design and for generating training data set. The artificial neural network (ANN) model has been developed and optimized for Ra with the same training data set. Finally, an adaptive neuro-fuzzy inference system (ANFIS) model has been developed for Ra. Optimization of the developed ANFIS model has been done by applying the latest optimization techniques Rao algorithm and the Jaya algorithm. Different statistical parameters such as the mean square error (MSE), the mean absolute error (MAE), the root mean square error (RMSE), the mean bias error (MBE) and the mean absolute percentage error (MAPE) elucidate that the ANFIS model is better than the ANN model. Both the optimization algorithms results in considerable improvement in the SI of the machined surface. Comparing the Rao algorithm and Jaya algorithm for optimization, it has been found that the Rao algorithm performs better than the Jaya algorithm.
先进的建模和优化技术是当今处理复杂加工过程如电火花加工(EDM)所必需的。在本研究中,考虑不同的电输入参数对钛合金进行加工,以评估重要的表面完整性(SI)参数之一表面粗糙度Ra。首先,采用响应面方法进行实验设计和生成训练数据集。利用相同的训练数据集,建立并优化了Ra的人工神经网络模型。最后,建立了Ra自适应神经模糊推理系统(ANFIS)模型。采用最新的优化技术Rao算法和Jaya算法对ANFIS模型进行了优化。不同的统计参数,如均方误差(MSE)、平均绝对误差(MAE)、均方根误差(RMSE)、平均偏置误差(MBE)和平均绝对百分比误差(MAPE),说明ANFIS模型优于ANN模型。这两种优化算法都显著提高了加工表面的SI。将Rao算法与Jaya算法进行优化比较,发现Rao算法的性能优于Jaya算法。
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引用次数: 2
A multi-objective optimal decision model for a green closed-loop supply chain under uncertainty: A real industrial case study 不确定条件下绿色闭环供应链的多目标最优决策模型:一个实际工业案例研究
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.391
I. Fang, W.T. Lin
Green closed-loop supply chain management is an important topic for business operations today because of increasing resource scarcity and environmental issues. Companies not only have to meet environmental regulations, but also must ensure high quality supply chain operation as a means to secure competitive advantages and increase profits. This study proposes a multi-objective mixed integer programming model for an integrated green closed-loop supply chain network designed to maximize profit, amicable production level (environmentally friendly materials and clean technology usage), and quality level. A scenario-based robust optimization method is used to deal with uncertain parameters such as the demand of new products, the return rates of returned products and the sale prices of remanufactured products. The proposed model is applied to a real industry case example of a manufacturing company to illustrate the applicability of the proposed model. The result shows a robust optimal resource allocation solution that considers multiple scenarios. This study can be a reference for closed-loop supply chain related academic research and also can be used to guide the development of a green closed-loop supply chain model for better decision making.
由于资源短缺和环境问题日益严重,绿色闭环供应链管理是当今企业经营的一个重要课题。企业不仅要符合环境法规,还必须确保高质量的供应链运作,以确保竞争优势和增加利润。本研究提出了以利润最大化、友好生产水平(环保材料和清洁技术的使用)和质量水平最大化为目标的集成绿色闭环供应链网络的多目标混合整数规划模型。采用基于场景的鲁棒优化方法处理新产品需求、退货率和再制造产品销售价格等不确定参数。将该模型应用于某制造企业的实际工业案例,以说明该模型的适用性。结果显示了考虑多种场景的鲁棒最优资源分配解决方案。本研究可为闭环供应链相关的学术研究提供参考,也可用于指导绿色闭环供应链模型的发展,以更好地进行决策。
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引用次数: 9
Joint distribution models in fast-moving consumer goods wholesale enterprise: Comparative analysis and a case study 快速消费品批发企业联合配送模式:比较分析与案例研究
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-06-25 DOI: 10.14743/apem2021.2.395
L. Wang, X. Chen, H. Zhang
Joint distribution means multiple clients were provided distribution services together by only one third-party logistics company. It is a unified plan and implementation used in distribution centres and a distribution activity implemented by multiple consortia. Many problems in distribution can be solved through the joint use of distribution warehouse, vehicles and reasonable logistics business, so as to optimize the overall logistics node and route arrangement. This paper mainly discusses the model of joint distribution of fast moving consumer goods, proposes three types of the optimization model of joint distribution system with Chaopi as an example. We draw the conclusion that Chaopi Trading Co., Ltd. is a joint distribution system optimization business model. This paper puts forward several basic distribution models and analyzes them in combination with practical applications, which has strong practical significance. Although the development of public distribution in China is not very fast, it is an inevitable trend. Through the efforts and explorations of the governments of various countries, there will be more and more choices of public distribution models.
联合配送是指多个客户由一家第三方物流公司共同提供配送服务。它是在配送中心使用的统一计划和实施,是由多个财团实施的配送活动。通过联合使用配送仓库、车辆和合理的物流业务,可以解决配送中的许多问题,从而优化整体物流节点和路线安排。本文主要讨论了快速消费品的联合配送模型,并以超皮为例,提出了三种类型的联合配送系统优化模型。我们得出的结论是,朝皮贸易有限公司是一个联合分销系统优化的商业模式。本文提出了几种基本分布模型,并结合实际应用进行了分析,具有较强的现实意义。虽然公共分销在中国的发展不是很快,但这是一个必然的趋势。通过各国政府的努力和探索,公共分配模式的选择将会越来越多。
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引用次数: 2
Optimization of a multi-objective location model of manufacturing base considering cooperative manufacturing capabilities and service benefits 考虑协同制造能力和服务效益的多目标制造基地选址模型优化
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-03-26 DOI: 10.14743/APEM2021.1.388
J. Sun, Q. Zhang, Y. Yu
Improving customer satisfaction and shortening the manufacturing cycle have become common concerns of current manufacturers. This paper presents a multi‐objective location model considering the maximization of collaborative manufacturing capabilities and service benefits. This method first uses the two dimensions of customer share and market consumption to segment cus‐ tomers, and identify the weight of various customer groups. Secondly, the space vector model (VSM) is used to calculate the matching between manu‐ facturing capabilities and manufacturing requirements. Then build a multi‐ objective location model based on the two goals of collaborative manufactur‐ ing capabilities and service benefits. Finally, the model was tested with simu‐ lation data, which proved the validity and feasibility of the model. According to the simulation results, managers can accurately select the optimal manu‐ facturing base from multiple candidate manufacturing bases with regard to less costs, shorter lead times, better manufacturing capabilities, better service benefits. In this paper, Fuzzy theory, Logit model and VSM are combined to salve the problem of manufacturing base location. Considering resources and service benefits of each manufacturing base, it is helpful to optimize the loca‐ tion of enterprises. From the academic and practical points, this study pro‐ vides a new perspective for the location problem.
提高客户满意度,缩短制造周期已成为当前制造商普遍关注的问题。提出了一种考虑协同制造能力和服务效益最大化的多目标定位模型。该方法首先利用客户份额和市场消费两个维度对客户进行细分,并确定各个客户群体的权重。其次,利用空间向量模型(VSM)计算制造能力与制造需求之间的匹配关系。然后,以协同制造能力和服务效益为目标,建立了多目标定位模型。最后用仿真数据对模型进行了验证,验证了模型的有效性和可行性。根据仿真结果,管理者可以从多个候选制造基地中准确选择成本更低、交货期更短、制造能力更强、服务效益更好的最佳制造基地。本文将模糊理论、Logit模型和VSM模型相结合,解决了制造基地选址问题。综合考虑各制造基地的资源效益和服务效益,有利于企业的区位优化。本研究从理论和实践两方面为研究城市选址问题提供了新的视角。
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引用次数: 1
A new management approach based on Additive Manufacturing technologies and Industry 4.0 requirements 基于增材制造技术和工业4.0要求的新管理方法
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-03-26 DOI: 10.14743/APEM2021.1.389
J. Patalas-Maliszewska, M. Topczak
Nowadays, it is necessary to formulate and implement a development strate‐ gy in manufacturing enterprises, in line with the assumptions of the Industry 4.0 concept. In this context, a gap in the research has been observed in effec‐ tive management methods, in order to gain a competitive advantage through the implementation and use of Additive Manufacturing (AM) technologies. The main purpose of the study is to build a new approach to management, based on the implementation of new AM technologies and good practice. This paper uses the detailed literature studies and results from the empirical re‐ search of some 250 Polish manufacturing enterprises; this material contains a sample thereof, processed into a new approach. The major contributions of the work are as follows: (1) identification of current management areas in which manufacturing companies focus their activities, in the context of Indus‐ try 4.0, (2) the establishment of the correlation between gaining a competitive advantage and implementing AM technologies in the context of Industry 4.0, (3) Defining the so‐called AM4.0CARD as a new management approach, based on AM technologies and the requirements of Industry 4.0. Managers of manu‐ facturing enterprises, thanks to the use of the proposed approach, may take a strategic decision, regarding the implementation of AM technologies, due to the possibility of forecasting the impact of such an investment on the im‐ provement of the company's competitive advantage.
如今,制造业企业有必要制定和实施符合工业4.0概念假设的发展战略。在这种背景下,为了通过实施和使用增材制造(AM)技术获得竞争优势,在有效的管理方法方面观察到研究中的空白。该研究的主要目的是建立一种新的管理方法,基于新的AM技术和良好实践的实施。本文采用详细的文献研究和对250家波兰制造企业的实证研究结果;本材料包含其样品,加工成一种新的方法。该工作的主要贡献如下:(1)在工业4.0的背景下,确定制造公司关注其活动的当前管理领域;(2)在工业4.0的背景下,建立获得竞争优势与实施增材制造技术之间的相关性;(3)根据增材制造技术和工业4.0的要求,将所谓的AM4.0CARD定义为一种新的管理方法。由于使用了所提出的方法,制造企业的管理者可以就增材制造技术的实施做出战略决策,因为有可能预测这种投资对公司竞争优势改善的影响。
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引用次数: 16
A dynamic job-shop scheduling model based on deep learning 基于深度学习的作业车间动态调度模型
IF 3.6 3区 工程技术 Q2 ENGINEERING, MANUFACTURING Pub Date : 2021-03-26 DOI: 10.14743/APEM2021.1.382
W. Tian, H. Zhang
Ideally, the solution to job-shop scheduling problem (JSP) should effectively reduce the cost of manpower and materials, thereby enhancing the core competitiveness of the manufacturer. Deep learning (DL) neural networks have certain advantages in handling complex dynamic JSPs with a massive amount of historical data. Therefore, this paper proposes a dynamic job-shop scheduling model based on DL. Firstly, a data prediction model was established for dynamic job-shop scheduling, with long short-term memory network (LSTM) as the basis; the Dropout technology and adaptive moment estimation (ADAM) were introduced to enhance the generalization ability and prediction effect of the model. Next, the dynamic JSP was described in details, and three objective functions, namely, maximum makespan, total device load, and key device load, were chosen for optimization. Finally, the multi-objective problem of dynamic JSP scheduling was solved by the improved multi-objective genetic algorithm (MOGA). The effectiveness of the algorithm was proved experimentally.
理想情况下,作业车间调度问题(job-shop scheduling problem, JSP)的解决方案应有效地降低人力和材料成本,从而提高制造商的核心竞争力。深度学习(DL)神经网络在处理具有大量历史数据的复杂动态jsp方面具有一定的优势。为此,本文提出了一种基于深度学习的作业车间动态调度模型。首先,以长短期记忆网络(LSTM)为基础,建立了动态作业车间调度的数据预测模型;引入Dropout技术和自适应矩估计(ADAM),增强了模型的泛化能力和预测效果。其次,对动态JSP进行了详细的描述,并选择了最大完工时间、总设备负载和关键设备负载三个目标函数进行优化。最后,采用改进的多目标遗传算法(MOGA)求解动态调度的多目标问题。实验证明了该算法的有效性。
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引用次数: 13
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Advances in Production Engineering & Management
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