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

共 6719 条记录，以下是131-140 订阅

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Effect of Tightening Torque on Bearing Performance of Kevlar Fiber Composite Bolted Joints Produced by Additive Manufacturing 5th

Effect of Tightening Torque on Bearing Performance of Kevlar...

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5th International Symposium on Dynamic Response and Failure of Composite Materials

作者： Ravelli, M. Giorleo, L. Papa, I. Silvestri, A. Mascolo, R. Squillace, A. Univ Brescia Dept Mech & Ind Engn Adv Prototype Lab Brescia Italy Univ Naples Federico II Dept Chem Mat & Prod Engn Naples Italy Staz Sperimentale Ind Pelli & Mat Concianti srl Naples Italy

ISBN: (纸本)9783031776991;9783031776977;9783031776960

Composite materials are common in industries like aerospace, automotive, construction, and wind energy. Understanding the behavior of composite bolted joints is crucial but challenging due to fiber anisotropy and stress concentration. Factors influencing joint efficiency include washer size, bolt torque, and hole-to-edge distance. Studies suggest that higher clamping pressure improves bearing strength and affects failure mechanisms in composites. Additive Manufacturing (AM), particularly using continuous fibers, has enabled new customized composites with enhanced mechanical properties. Fused Filament Fabrication (FFF) is a key method, but there is limited research on the bearing behavior of FFF composites and the role of geometric parameters. While joint failure modes are well studied, data on the effect of torque on bolted joints in additively manufactured composites is scarce. This study investigates the mechanical behavior of these joints under various torques, focusing on bearing behavior, strain fields, and deformation.

关键词： bearing strength composites additive manufacturing bolted joints tightening torque

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Virtual Twin of 3D Printing Deposition in Unity Environment 4th

Virtual Twin of 3D Printing Deposition in Unity Environment

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4th International Conference of the Italian Association of Design Methods and Tools for Industrial engineering

作者： Cantarelli, Simone Santi, Gian Maria Francia, Daniela Giuliani, Francesca Guidotti, Eleonora Liverani, Alfredo Univ Bologna Dept Ind Engn Bologna Italy

ISBN: (纸本)9783031765933;9783031765940

The objective of this project is to address the limitations of conventional slicing and simulation software in the field of 3D printing. The project entails the creation of a comprehensive virtual environment utilising the Unity platform, thereby effectively integrating the capabilities of G-code generation programs with the precision of 3D models. By employing this innovative approach, the project has achieved a high degree of accuracy in simulating the movements of actual printing machinery and accurately representing material deposition processes. A key objective is the creation of a dynamic and interactive framework that can accommodate a wide range of inputs and sensory data in real time. This feature enhances the Virtual Twin technology, transforming it into a highly versatile tool for conducting simulations, improving printing efficiency, and facilitating advanced technical training. The significance of this project lies in its immediate practical applications and its potential to serve as a pioneering model for future developments within the 3D printing industry and beyond. The integration of realtime data and interactive functionalities promises to propel the industry towards more innovative, efficient, and customisable manufacturing processes.

关键词： Virtual Twin 3D Model 3D printing Codification

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Monitoring the Accuracy of Manufacturing Elements of the End Distribution System of a Hydraulic Motor Planetary Type 6th

Monitoring the Accuracy of Manufacturing Elements of the End...

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6th Grabchenko's International Conference on Advanced Manufacturing Processes

作者： Kiurchev, Sergey Kyurchev, Volodymyr Radkevych, Oleksandr Fatyeyev, Oleksandr Hrechka, Iryna Dmytro Motornyi Tavria State Agrotechnol Univ 18 B Khmelnitsky Ave UA-72310 Melitopol Ukraine Natl Acad Educ Sci Ukraine Inst Pedag 52-D Sichovykh Striltsiv Str UA-04053 Kyiv Ukraine Natl Tech Univ Kharkiv Polytech Inst 2 Kyrpycheva St UA-61002 Kharkiv Ukraine

ISBN: (纸本)9783031827488;9783031827464;9783031827457

Currently, the mechanical engineering industry has accumulated quite a lot of experience in producing elements of distribution systems of gear and axial-piston positive displacement hydraulic machines. This experience cannot be used in producing planetary hydraulic machines due to the specific features of their distribution systems, which are designed to create a rotating hydraulic field of the working fluid. The precision of manufacturing of the elements of the liquid system distribution determines the uniformity of the working fluid supply. It has been established that the issues of monitoring the accuracy of manufacturing elements of distribution systems remain open, and the development of measures to control the accuracy of manufacturing distributors is an urgent task. As a result of the research, the controlled parameters of the elements of the contact surfaces of the distributors were substantiated, and a calculation scheme for determining the flow section area was developed. The influence of the accuracy of the location of the holes of the movable distributor on the amplitude and frequency of pulsation of the working fluid in the distribution system has been studied this makes it possible to ensure the stability of the functioning of the hydraulic motor planetary type even at the design stage. A reasonable tolerance of +/- 10' on the angular arrangement of the working holes of the movable distributor makes it possible, with a constant pulsation frequency of the flow area, to limit the increase in its amplitude to 1.3 times.

关键词： contacting surfaces distribution holes high pressure zone low pressure zone corner location

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Qualitative States of Operating Fluid in the Chamber of the Auto-Balancing Device 6th

Qualitative States of Operating Fluid in the Chamber of the ...

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6th Grabchenko's International Conference on Advanced Manufacturing Processes

作者： Drach, Ilona Dykha, Maksym Marchenko, Dmytro Khmelnytskyi Natl Univ 11 Inst St UA-29016 Khmelnytskyi Ukraine Mykolayiv Natl Agrarian Univ 9 Honhadze St UA-54020 Mykolayiv Ukraine

ISBN: (纸本)9783031827488;9783031827464;9783031827457

The rotor is the most important component of the rotating equipment, and the vibration caused by the imbalance of its mass affects the operation of the machine. The article considers an effective balancing technology - rotor balancing using a liquid-type passive automatic balancing device (ABD). Such ABDs are designed as a chamber in the form of a rigid cylindrical ring or torus, partially filled with liquid. To achieve the effect of redistribution of the rotor masses, this technology uses the movement of the operating fluid in the chamber cavity in the direction opposite to the imbalance of the elastic-deformation rotor or the rotor on elastic supports, where there is a phase difference between the direction of the force from the imbalance and the deflection of the rotor or the movement of the rotor. The liquid auto balancer is a direct-action regulator and does not require a power supply and the creation of control systems for moving the correcting fluid. The article presents the results of modeling the movement modes of the operating fluid in the ABD chamber;estimates of the angular speeds of rotation of the rotor system are substantiated. Model verification was performed on the experimental material, which was obtained with the help of unique stands with developed experimental samples of ABD and experimental installations that model rotors on elastic supports with a vertical and horizontal rotation axis and an axis inclined at an angle to the horizon line.

关键词： Rotor Passive Self-balancing Technology Liquid-type Auto-balancing Device (ABD) Operating Fluid Movement Modes

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Architecture of Online Laboratory for Modeling and Studying the Properties of Structurally Heterogeneous Materials 6th

Architecture of Online Laboratory for Modeling and Studying ...

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6th Grabchenko's International Conference on Advanced Manufacturing Processes

作者： Serhieiev, Volodymyr Rud, Viktor Lutsk Natl Tech Univ 75 Lvivska St UA-43018 Lutsk Ukraine

ISBN: (纸本)9783031827488;9783031827464;9783031827457

Structurally heterogeneous materials, both inorganic and organic, are widely used. The development of new materials represents a significant interest in engineering. Simulation-based, computer-aided modeling has proved to be time and cost-saving and has already been used in modeling and studying the properties of different classes of materials. This paper proposes the online laboratory's architecture for modeling and studying the properties of structurally heterogeneous materials. The SDLC methodology designs system modules, Use-Cases and UI/UX framework. As the outcome, the deployment diagram is proposed with a separate Web user interface, backend simulation engine, and persistent data storage. Such web applications could help researchers and students perform simulation experiments using state-of-the-art Monte Carlo methods with the support of classical and quantum computer hardware. As we begin to reach the limits of classical computing methods, quantum computing algorithms could broaden the reach of simulation modeling. The schematics of random number generation according to the normal distribution law using an IBM quantum computer is described as one of the possible improvements to classical Monte Carlo.

关键词： Simulation Monte Carlo Modeling Laboratory Architecture Online Heterogeneous Materials Powder Metallurgy

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Experimental Verification of the Impact of Phase Shift Between Neighboring Waves on the Intensity of Regenerative Oscillations During Continuous Cutting 6th

Experimental Verification of the Impact of Phase Shift Betwe...

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6th Grabchenko's International Conference on Advanced Manufacturing Processes

作者： Tryshyn, Pavlo Vnukov, Yuriy Dyadya, Serhiy Kozlova, Olena Natl Univ Zaporizhzhia Polytech 64 Zhukovsky St UA-69063 Zaporizhzhia Ukraine

ISBN: (纸本)9783031827488;9783031827464;9783031827457

This study presents experimental findings regarding the influence of phase shift between adjoining waves on the cutting surface and its impact on the intensity of regenerative self-oscillations during continuous cutting without the influence of coordinate coupling. The study was conducted using an original design of a cutter-oscillator with one degree of freedom. The importance of the obtained results lies in the possibility of verifying the fundamental principles of regenerative oscillation theory, presented by developers in the past century, which could not previously be confirmed due to limitations in experimental capabilities. The study revealed the absence of a connection between the magnitude of the remainder from the whole wave and the phase shift of adjoining waves, as well as the absence of influence of these parameters on the intensity of regenerative self-oscillations. These results contradict previously accepted notions and indicate the need to refine theoretical models. However, a significant correlation was found between the frequency of regenerative self-oscillations and the phase shift of adjoining waves. This suggests that vibration during continuous cutting is a self-organizing process. It is noted that the obtained results pertain only to continuous cutting conditions, and further research is planned to expand the investigation to intermittent conditions, such as turning with longitudinal grooves or protrusions, for a more comprehensive understanding of the influence of cutting parameters on oscillation processes. The results of the experimental verification are valuable for optimizing cutting processes to enhance efficiency and processing quality. The article aims to experimentally verify two fundamentally important statements formulated by the developers of the theory of regenerative oscillations for continuous cutting.

关键词： Vibration Turning Regenerative Self-oscillations Cutter-oscillator Amplitude Frequency Phase Shift

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Contribution of Artificial Intelligence and Simulation to Building Evacuation 6th

Contribution of Artificial Intelligence and Simulation to Bu...

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6th Grabchenko's International Conference on Advanced Manufacturing Processes

作者： Ferreira, Luis P. Costa, Catarina Ramos, A. L. Valero, M. R. Polytech Porto ISEP Rua Dr Antonio Bernardino Almeida P-4249015 Porto Portugal Assoc Lab Energy Transports & Aerosp LAETA INEGI Rua Dr Roberto Frias 400 P-4200465 Porto Portugal Univ Aveiro GOVCOPP DEGEIT Campus Univ Santiago P-3810193 Aveiro Portugal Univ Bristol Sch Elect Elect & Mech Engn Queens Bldg Bristol BS8 1TR Avon England

ISBN: (纸本)9783031827488;9783031827464;9783031827457

Evacuation procedures in buildings during emergencies demand advanced systems capable of ensuring swift and safe evacuations amidst increasingly complex (e.g., factories) and densely populated (e.g., urban) environments. Integrating advanced simulation and artificial intelligence (AI) algorithms into decision support systems (DSS) for evacuation processes has emerged as a promising approach to optimize and customize evacuation plans according to specific situational and people's needs. This paper analyses the role, main challenges, and opportunities of AI and simulation in building evacuation. In the context of DSS, AI enables dynamic adaptation of evacuation strategies in real-time, considering psychological and social factors in decision-making, whereas advanced simulation models facilitate the evaluation and refining of evacuation strategies by identifying critical points and optimal approaches. While challenges such as algorithm accuracy, managing large data volumes, and privacy concerns remain, this study shows how technological developments such as smart sensors, autonomous emergency vehicles, and communication technologies hold significant promise in supporting the integration of AI to enhance evacuation efficiency and inclusivity, thereby improving overall building safety.

关键词： Decision-Making Support Systems Security engineering Design engineering Optimization

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A Strategy Towards In Situ Monitoring and Quality Assessment of 3D Components Manufactured by FDM: Preliminary Features 4th

A Strategy Towards In Situ Monitoring and Quality Assessment...

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4th International Conference of the Italian Association of Design Methods and Tools for Industrial engineering

作者： Gloria, Antonio Di Bernardo, Romolo Fuscone, Alessandra Papallo, Ida Speranza, Domenico Acerra, Francesco Gatta, Davide Maria Cannizzaro, Davide Martorelli, Massimo Univ Naples Federico II Dept Ind Engn Fraunhofer JL IDEAS Naples Italy Univ Cassino & Southern Lazio Dept Ind Engn Cassino FR Italy Leonardo SpA Rome Italy

ISBN: (纸本)9783031765964;9783031765971

The design of lightweight devices is a paramount goal in the industrial field. Great challenges involve the development of high-quality components manufactured by Fused Deposition Modeling (FDM). Accordingly, the aim of the study was to report preliminary features in the development of a strategy towards in situ monitoring and quality assessment of 3D printed parts. Blockshaped specimens were manufactured using FDM and polyethylene terephthalate glycol-modified (PETG) filament. Printing temperature, second deposition angle and printing speed were varied at three levels to evaluate their influence on the vibrations and on the flexural performance. The motions produced by a 3D printer were investigated, and suitable sensors were chosen and/or adapted as measuring systems. The vibrations produced during the FDM process were monitored by means of a customized sensor systems. The values for the three axes were produced in acceleration, and some examples of the amplitudes recorded over time were reported. Three-point bending tests were carried out on the 3D printed PETG. A potential correlation among the acceleration patterns and the mechanical properties (i.e., flexural modulus and strength) of the 3D printed parts was preliminarily studied.

关键词： Design for additive manufacturing In situ monitoring Sensor measurements Design of experiments mechanical measurements

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Methodology for Design Optimization of Silicone-Based Pneumatic Soft Bending Actuators for Agrifood Applications 4th

Methodology for Design Optimization of Silicone-Based Pneuma...

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4th International Conference of the Italian Association of Design Methods and Tools for Industrial engineering

作者： Ostuni, Benedetta Maria Vita Grazioso, Stanislao Caporaso, Teodorico Lanzotti, Antonio Univ Naples Federico II Dept Ind Engn Ple Tecchio 80 I-80125 Naples Italy Univ Bergamo Dept Management Informat & Prod Engn Via Salvecchio 19 I-24129 Bergamo Italy

ISBN: (纸本)9783031765964;9783031765971

In this paper a methodology for the optimization of design parameters of silicone-based pneumatic soft actuators is presented. The objective is to provide a useful tool in the early design phases of soft grippers made of silicone pneumatic actuators, which are particularly suitable for the manipulation of agrifood products. The methodology presented can be used for the optimal selection of geometric parameters and/or materials to be used for the realization of the actuators, by minimizing the material used while maximizing the tip force exerted by the actuators. This force should guarantee the stable grasp without causing damage on the objects.

关键词： Soft robotics gripper pneumatic soft actuators fiber-reinforced soft actuators optimization design parameters sustainability

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Physics-Informed Neural Networks for Industrial Applications: A Case Study in Thermal Power Prediction of an AHU for a Topcoat Process 4th

Physics-Informed Neural Networks for Industrial Applications...

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4th International Conference of the Italian Association of Design Methods and Tools for Industrial engineering

作者： Ciampi, Francesco Giuseppe Rega, Andrea Diallo, Thierno M. L. Patalano, Stanislao Univ Naples Federico II Dept Ind Engn I-80125 Naples Italy ISAE Supmeca Quartz Lab EA7393 F-93400 St Ouen France

ISBN: (纸本)9783031765964;9783031765971

Modelling approaches for industry are typically classified into data-driven and physics-based models. The first type often struggles to interpret the complexities of physical systems and require enough data to capture patterns, while the second type depends on detailed information, which might be only partially available or subject to uncertainty. The recent methodology of Physics-Informed Neural Networks (PINNs) is investigated as a hybrid approach that integrates neural network flexibility with the definition of physical constraints. The work focuses first on a review of PINNs applications in industry, highlighting their advantages over traditional methods in terms of efficiency and versatility. Then, methods and tools for PINN implementation are described and a general mathematical formulation is provided. In order to validate the model, a case study concerning the prediction of the thermal power of an industrial Air Handling Unit (AHU) is proposed, detailing the implementation process. The results show good performance compared to traditional data-driven techniques, highlighting the main advantages of this hybrid approach, such as the efficiency even with simple physical models and a smaller amount of training data. Future research directions include the implementation of variants of PINNs with different neural network models or different forms of integration of physical knowledge.

关键词： Industrial engineering Energy Systems Prediction Models Scientific Machine Learning Physics-Informed Neura Networks

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