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检索条件"丛书名=Lecture Notes in Mechanical Engineering"

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Selection of Industry 4.0 Technology to Support Lean Manufacturing from the Perspective of Enterprise Interoperability 32nd

Selection of Industry 4.0 Technology to Support Lean Manufac...

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32nd International Conference on Flexible Automation and Intelligent Manufacturing

作者： Martins, G. R. D. N. Ramos, L. F. P. Loures, E. F. R. Deschamps, F. Loures, L. R. Pontifical Catholic Univ Parana PUC PR Curitiba Parana Brazil

ISBN: (纸本)9783031381645;9783031381652

Faced with paradigm shifts in the global manufacturing context promoted by the Fourth Industrial Revolution, many organizations are seeking to meet customer needs through the integration of Lean Manufacturing (LM) philosophy principles with Industry 4.0 (I4.0) technologies. When there is the integration of technological enablers from I4.0 and deep advances in efficiency and productivity with LM, these systems tend to offer enhanced and more assertive results, since they are complementary concepts. The main goal of this paper is the selection of I4.0 technologies to support the LM system, considering the perspectives and barriers of Enterprise Interoperability (EI) and using multicriteria methods (MCDM) to support decision-making. Using the DEMATEL multicriteria method, it was possible to develop a diagnostic evaluation, analyze the existing influences between the elements of the LM, and support the elicitation of weights in the decisional evaluation, with the FITradeoff method. In this way, the decisional evaluation indicated as the I4.0 technology that must be implemented as a priority to raise the level of organizational maturity in LM is Big Data Analytics. Big Data integrated with Business Analytics (BA) can offer several advantages, such as assertiveness in decision-making;Keeping the company updated about the market;Indicating risks and improving data security;Promotes alignment between marketing and sales, among others.

关键词： Lean Manufacturing Industry 4.0 Enterprise Interoperability MCDM methods

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Study on Continuous Road Friction Measurement Under Various Environmental Conditions 16th

Study on Continuous Road Friction Measurement Under Various ...

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16th International Symposium on Advanced Vehicle Control

作者： Kageyama, Ichiro Watanabe, Atsushi Kuriyagawa, Yukiyo Haraguchi, Tetsunori Kaneko, Tetsuya Nishio, Minoru Consortium Adv Rd Frict Database Sakura Japan Nihon Univ Chiyoda City Japan Osaka Sangyo Univ Daito Japan Absolute Co Ltd Isehara Kanagawa Japan

ISBN: (纸本)9783031703942;9783031703928;9783031703911

This paper deals with a study to construct a road friction characteristic database as the first step in building a system to estimate road friction characteristics ahead, which is one of the major issues in traffic safety. To achieve this goal, we proposed a new method that can continuously measure the peak mu in the mu-s characteristic and showed the measurement results on different road surfaces. Based on these results, in this paper we measure the friction characteristics of snow and ice surfaces at a well-maintained test site and present the continuous mu-s characteristics on the surfaces and the peak mu regions on each surface. Furthermore, measurements are also performed on ordinary roads under snowy conditions, and a comparison with the results from the proving ground, it is shown that we need to examine the dynamics of the mu-s characteristics.

关键词： Road friction Breaking force Measurement Tire characteristics

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Numerical Study of Stream Finishing of a Fairway Golf Club 3rd

Numerical Study of Stream Finishing of a Fairway Golf Club

引用

3rd International Conference on Advanced Surface Enhancement (INCASE)

作者： Wan, Stephen Ma, Shengwei Turangan, Cary Wu, Keni Chih-Hua Tan, Jun Ming Cheng, Wei Shin Tan, Kai Liang ASTAR Inst High Performance Comp IHPC 1 Fusionopolis Way16-16 Connexis Singapore 138632 Singapore ASTAR Adv Remfg & Technol Ctr ARTC 3 Cleantech Loop01-01CleanTech 2 Singapore Singapore

ISBN: (纸本)9789819986422;9789819986439

The present study extends a previously calibrated rheology and wall slip model to computational fluid dynamics (CFD) simulations of material removal distribution over the surface of a fairway golf club undergoing the stream finishing process. Simulations were undertaken for the cases of the golf club immersed in a stream finishing drum, fixed for two different orientations and with the drum rotated either clockwise or counterclockwise. Owing to the complex media flow over the golf club resulting from the interaction between the media and the three-dimensional surface of the golf club, predicted values of wall pressure and slip velocity distributions span over a wide range of magnitudes, implying that achieving uniform material removal would be a particularly interesting challenge. Lastly, insights gained from the present study will inform a careful design of the physical experiments, which are meant to further improve the stream finishing material models.

关键词： finishing Computational fluid dynamics Three dimensional surface Material removal prediction

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A Modified Frolich Magnetic Hysteresis Model for a ε-Fe2O3 Iron Ferrite 10th

A Modified Frolich Magnetic Hysteresis Model for a ε-Fe2O3 ...

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10th International Conference on Design and Modeling of mechanical Systems (CMSM)

作者： Hergli, Khaoula Marouani, Haykel Univ Gafsa Gafsa Preparatory Inst Engn Studies Gafsa Tunisia Univ Monastir LGM Monastir Tunisia Univ Monastir Natl Engn Sch Monastir LGM Monastir Tunisia

ISBN: (纸本)9783031650062;9783031650079

As bulk magnetic behaviors are different from those of nanomaterials, the well-known classical models are not appropriate to simulate the magnetization-induction curves. In this work, a novel formulation for modeling the hysteresis loop of an iron ferrite nanomaterial is presented. Three adapted models are tested, based on the Rayleigh, the Potter and the Frolich expressions. Results show a non-satisfying fitting curve. An improved model, based on the Frolich one, is then expressed. The added model coefficients facilitate an accurate non-linearity representation of nanomaterials magnetic response, thus resulting in a good agreement between simulated and measured hysteresis loop. To accomplish this goal, the appropriate values of these parameters have to be identified. Then, a constrained optimization approach is used. The generalized reduced gradient is adopted for the optimization process. The new model is verified. Thus, its numerical hysteresis loop shows a better fitting compared to the experimental curve. The root mean square error is reduced from 2.519 to 2.022. Furthermore, it demonstrates better magnetic response description of the epsilon-Fe2O3 nano-iron-ferrite material than the other models.

关键词： Magnetism hysteresis nanomaterial modeling Frolich

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A Comprehensive Method for Computing Suspension Elasto-kinematics With Non-linear Compliance 16th

A Comprehensive Method for Computing Suspension Elasto-kinem...

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16th International Symposium on Advanced Vehicle Control

作者： Magri, Paolo Gadola, Marco Chindamo, Daniel Sandrini, Giulia Candela, Andrea Univ Brescia Dept Mech & Ind Engn I-125123 Brescia Italy

ISBN: (纸本)9783031703942;9783031703928;9783031703911

Since flexible bushings are used as the interface between the suspension arms and the chassis, the extra degrees of freedom make the design process a complex task. While the use of a multi-body model is common practice in the industry, a dedicated computational tool can be more practical and straightforward, especially when undertaking the design of a new suspension concept from the ground up. This paper presents a quasi-static method for calculating suspension compliance under the action of forces and moments, enabling real-time simulations. The algorithm proposed in this paper was devised with a threefold purpose: integrating elasto-kinematics into the kinematic design tool previously created by the authors, integrating real-time vehicle dynamics simulation, and overcoming the limitations of the traditional approach based on the superposition principle. Finally, a comparison of the proposed model with one based on the lookup-table and superposition principle is presented.

关键词： Suspension Kinematics Elasto-kinematics Bushing Compliance Simulation Vehicle Dynamics

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Two-Mesh Method for Coupled Conduction-Radiation Computations in Multi-layer Systems 14th

Two-Mesh Method for Coupled Conduction-Radiation Computation...

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14th International Conference on Computational Heat and Mass Transfer (ICCHMT)

作者： Rogozynski, Maciej Lapka, Piotr Warsaw Univ Technol Fac Power & Aeronaut Engn Warsaw Poland

ISBN: (纸本)9783031666087;9783031666094

The study aimed to develop a new method for coupled conductive-radiative heat transfer computations in multi-layer systems, potentially reducing the computational cost with as little as possible loss of accuracy. The analysis focused on the accuracy of obtained predictions without aiming at simulation time. The general concept of the proposed two-mesh method is to use separate grids of different densities (number of elements) to solve the radiative transfer equation (coarser mesh) and other equations, e.g., energy equation (finer mesh). Due to the coupling of equations, the appropriate data transfer methods were proposed. The temperature field from the energy equation solution needed as input for the thermal radiation model was provided using volume averaging. A much more sophisticated approachwas developed to provide information on radiation incident intensity, which is the output from the radiation model. An approximation using radial basis functions was used with an appropriate normalization to ensure the conservativeness of the approach. The finite volume method was applied to solve the energy and radiation transfer equations for a non-gray, multi-layer medium, accounting for the optical phenomena on interfaces. An extended analysis of the implemented method was conducted considering the effects of the share of thermal radiation in the total heat transfer, the optical thickness of the medium, the occurrence of optical phenomena at boundaries, the type of boundary conditions, and thewavelength dependence of thermal radiation. The improvement of solution accuracy using the proposed approach over coarse mesh computations was most pronounced close to the cold wall.

关键词： Conductive-Radiative Heat Transfer Numerical Solution Two-Mesh Method

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Effect of Combination Pile Raft Soil Structure Interaction on Seismic Investigation of Nuclear Reactor Containment Structure 15th

Effect of Combination Pile Raft Soil Structure Interaction o...

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15th International Conference on Vibration Problems (ICoVP)

作者： Thakur, Bhairav Desai, Atul Shah, Hemal Patel, Deepam SVNIT Dept Civil Engn Surat Gujarat India

ISBN: (纸本)9789819959211;9789819959228

Nuclear Power plants (NPP) are one of the distinctive components of a country's vital infrastructure system that provides for its energy needs. In India, several nuclear power stations (NPPs) are being built on a combined piled-raft foundation (CPRF) in soft soil conditions, notably a top alluvium in an active seismic zone. No research has been published so far that takes the nonlinearity of the soil for NPP buildings built on CPRF into account while considering seismic loads. The current study aims to explore, using a nonlinear finite element model, the dynamic reactions of the raft, pile with a raft, and CPRF of NPP. Furthermore, for a realistic simulation, it is critical to consider the various aspects of ground motion during time history analysis. The current work is focused on examining the seismic response of a nuclear containment structure employing a distributed array of inelastic springs, dashpots, and gap components to mimic the soil foundation interface using a nonlinear Winkler-based technique. Consequently, a specific 3D finite element numerical model of the nuclear structure was built and compared to the findings of earlier studies for nonlinear seismic analysis. In this article, investigations were done to consider the numerical analysis and combined pile and raft foundations to diminish the risk of NPPs caused by earthquakes. The findings demonstrate that soil structure interaction is the critical regulating factor that determines the now seismically resistant building.

关键词： Combined pile raft foundation Nonlinear Nuclear power plant Soil structure interaction

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Driver Behaviour Characterization Using an Instrumented Steering Wheel Conscious/Unconscious Muscle Activation 16th

Driver Behaviour Characterization Using an Instrumented Stee...

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16th International Symposium on Advanced Vehicle Control

作者： Akutain, Xabier Carrera Comolli, Francesco Gobbi, Massimiliano Mastinu, Giampiero Radaelli, Giovanni Toyota Motor Europe Zaventem Belgium Politecn Milan Milan Italy

ISBN: (纸本)9783031703942;9783031703928;9783031703911

The paper presents an Instrumented Steering Wheel (ISW) that measures the forces and moments that the driver applies at each hand. The ISW is equipped with two six-axis load cells and has the same inertia of a reference steering wheel fitted on normal production cars. The ISW is used to assess the conscious or unconscious application of forces at the steering wheel during a set of manoeuvres. The conscious steering actions refer both to sinusoidal steering input and handling circuit driving. A statistical analysis is performed to characterize the conscious driver behaviour. Referring to unconscious activation of muscles, a kick-plate pass-by manoeuvre is studied. Several drivers are employed for such tests. Typical behavioural patterns are found, describing how drivers apply forces and moments in conscious steering actions. The unconscious moment applied during a kick-plate manoeuvre may be even 20% of the maximum torque applied during counter-steering. The results can be used to develop new driver models, additionally, the ISW is proposed as a tool for properly defining the ADAS intervention logic to reduce the intrusiveness feeling felt by the driver and increase safety in case of unconscious steering actions.

关键词： Driver-Vehicle Systems ADAS Sensors and Actuators

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A Study on the Control of Handling and Stability of a Four Wheel Independent Steering Electric Vehicle 16th

A Study on the Control of Handling and Stability of a Four W...

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16th International Symposium on Advanced Vehicle Control

作者： Wu, Zhihao Zhang, Ning Li, Pu Li, Zihong Zhang, Jianrun Southeast Univ Sch Mech Engn Nanjing 211189 Peoples R China

ISBN: (纸本)9783031703942;9783031703928;9783031703911

The path-tracking control of electric vehicles with four wheel independent steering (FWIS) is crucial for enhancing vehicle stability. This paper aims to address the issue of multi-actuator redundancy by coordinating the control allocation of multiple actuators, thereby improving the handling stability and path tracking performance of FWIS vehicles. First, a model of FWIS electric vehicle is developed, taking into account both the nonlinear tyre and motor actuator characteristics. Subsequently, a path tracking model is established and a hierarchical control architecture is designed. The upper-level controller computes the generalized tracking force and the lower-level control force is distributed based on the principle of optimal tyre utilization rate. Finally, the simulation results demonstrate the effectiveness of the proposed control scheme in terms of tracking accuracy and handling and stability.

关键词： Four Wheel Independent Steering Electric Vehicle Motor Characteristics Handling and Stability Path Tracking

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IoT-Based Monitoring the Level of Sustainable Production: A Case of Energy Consumption in Turning Process 1

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8th International Scientific-Technical Conference (MANUFACTURING)

作者： Patalas-Maliszewska, Justyna Losyk, Hanna Dostatni, Ewa Klos, Slawomir Univ Zielona Gora Licealna 9 PL-65417 Zielona Gora Poland Poznan Univ Tech M Sklodowskiej Curie 5 PL-60965 Poznan Poland

ISBN: (数字)9783031564741

ISBN: (纸本)9783031564765;9783031564741

Sustainable production can be treated as the activities within manufacturing for creating sustainable and economic value. Nowadays managers are looking for new solutions to reduce production costs by increasing energy efficiency. It is possible to improve energy efficiency by managing the machining process based on collected data using the Internet of Things (IoT). To better understand the energy consumption of the machine as Computer Numerical Control (CNC), this article provides research to monitor the energy consumption in real-time using IoT-based sensors on the example of the turning process. The research focuses on the total power consumption of a representative machine CNC within a defined production process. Next, the relationship between energy consumption within the analysed production process and the outdoor and indoor temperature of the production hall was analysed. The recommendations for production managers were defined as an IoT-based energy efficiency monitoring and management system.

关键词： energy consumption Internet of Things (IoT) monitoring sustainability sustainable production turning process

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