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Finite element analysis of smart waste container

AIP conference Proceedings 2024年第1期3002卷

作者： Amal Hassan Raheem Hatam Kareem Kadhom Ahmed Abdulqader Hussein Electromechanical Engineering Department University of Technology Baghdad Iraq

The overarching goal of the Medical Waste Management Plan is to avoid and/or reduce the detrimental impacts of medical waste on human health and the environment. Design is the method through which humans achieve their intended results. The design of the Smart waste container is quite sophisticated since the Smart waste container operates in a very complicated environment. To acquire the best and most suitable design of Smart waste container to withstand various stresses and pressures, finite element analysis with Solidworks suggests the minimal design standard. Pro/Engineer Solidworks 2018 for finite element analysis is used for this purpose. Optimization is a procedure that delivers the optimum choice and outcome. Following observation and modelling, an optimization study was carried out. It is concerned with weight comparison and minimizing the size of the Smart waste container by analyzing numerous elements that impact performance, such as stress. The purpose of doing this research was to demonstrate the Container behaviour impacted by fatigue phenomena owing to fatigue tests and to examine the results for additional time and cost, as two extremely important metrics related to production. The analysis shows that with totally continual loading, it is possible to predict the lifespan of a Smart Waste container but also identify the crucial spots when crack formation is most likely to occur. The fatigue results we obtained for the improved design were Alternating Stress (1.72E+05 N/m^2) Cycles 1.00E+06 Which shows that the design is good and has a long service life.

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modelling social interaction between humans and service robots in large public spaces

Modelling social interaction between humans and service robo...

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2020 IEEE/RSJ International conference on Intelligent Robots and Systems (IROS)

作者： Bani Anvari Helge A Wurdemann Transportation Research Group Civil Maritime and Environmental Engineering and Science Boldrewood Innovation Campus University of Southampton UK Centre for Transport Studies University College London UK University College London UK

ISBN: (数字)9781728162126

ISBN: (纸本)9781728162133

With the advent of service robots in public places (e.g., in airports and shopping malls), understanding socio-psychological interactions between humans and robots is of paramount importance. On the one hand, traditional robotic navigation systems consider humans and robots as moving obstacles and focus on the problem of real-time collision avoidance in human-Robot Interaction (HRI) using mathematical models. On the other hand, the behavior of a robot has been determined with respect to a human. Parameters for human-human interaction have been assumed and applied to interactions involving robots. One major limitation is the lack of sufficient data for calibration and validation procedures. This paper models, calibrates and validates the socio-psychological interaction of the human in HRIs among crowds. The mathematical model is an extension of the Social Force Model for crowd modelling. The proposed model is calibrated and validated using open source datasets (including uninstructed human trajectories) from the Asia and Pacific Trade Center shopping mall in Osaka (Japan).In summary, the results of the calibration and validation on the multiple HRIs encountered in the datasets show that humans react to a service robot to a higher extend within a larger distance compared to the interaction range towards another human. This microscopic model, calibration and validation framework can be used to simulate HRI between service robots and humans, predict humans' behavior, conduct comparative studies, and gain insights into safe and comfortable human-robot relationships from the human's perspective.

关键词： Service robots Navigation Real-time systems Calibration mathematical model Collision avoidance Robots

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Fracture strength estimation of l3-l4 intervertebral disc using fea 41

Fracture strength estimation of l3-l4 intervertebral disc us...

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41st International conference on Vibroengineering

作者： Raj Arjun, S.I. Chandrashekara, C.V. Goplani, Parth Department of Mechanical Engineering PES University Bangalore India

Mechanical stress and fracture analysis of the human lumbar intervertebral discs are important in assessing disorders related to lower back pain and ageing. Finite element modelling and simulation approaches assist in easier prediction of the disc behaviour under different load conditions. The causes of mechanical failure and morphological changes still remain partially speculative. The present study addresses the issue by developing a finite element model of an L3-L4 lumbar intervertebral disc subjected to different axial compressive loadings. The morphological deformations and stress concentration regions within the disc are analyzed and reported. A mathematical relation is established to estimate the breaking strength of an L3-L4 intervertebral disc, thus indicating the risk of disc failure based on the applied load. © 2019 Raj Arjun S I, et al.

关键词： Finite element method

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Hydrological modelling and Detention Ponds Evaluation at Paranoa Lake - Brazil 11th

Hydrological Modelling and Detention Ponds Evaluation at Par...

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11th International conference on Urban Drainage modelling (UDM)

作者： de Souza, Fernanda Pereira Leite Costa, Maria Elisa Koide, Sergio Univ Brasilia Fac Technol Brasilia DF Brazil

ISBN: (纸本)9783319998671;9783319998664

Paranoa Lake is an urban lake and since last year Brasilia started to use its waters for human consumption. Until the 1990's algae and cyanobacteria blooms occurred and improvements on wastewater treatment plants brought the water quality to very good conditions in the 2000's. Recently water quality is starting to deteriorate mainly due to diffuse pollution. Thus, the evaluation of urban drainage waters entering the lake and the proposition of technological alternatives to minimize impacts are important for the analysis of diffuse urban pollution flowing into the lake. Quantitative and qualitative behaviour of the urban drainage waters were analysed by means of monitoring the precipitation amount and runoff flow and quality. mathematical modelling using the SWMM and PCSWMM programs was carried out, and good results were obtained for flow modelling. However, in water quality simulations, poorer response was obtained. It was also evaluated the implementation of 13 alternatives of detention ponds to study the effects of their location on the removal of pollutants, as well as influences on the network flow support. It was observed that ponds allocated in the downstream part of the network are more efficient, but requireconstruction in environmentally and urbanistically problematic areas and high commercial value. Alternatives with smaller volumes in areas areas near the center of the basin can meet flood-damping needs of the presently constructed drainage network.

关键词： LID SWMM Detention basis

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modelling of the Impact of the Retention Reservoir on the Flood Protection of the City - A Case Study for the City of Kalisz (Central Poland) 4

Modelling of the Impact of the Retention Reservoir on the Fl...

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4th World Multidisciplinary Civil engineering-Architecture-Urban Planning Symposium ( WMCAUS)

作者： Laks, Ireneusz Walczak, Zbigniew Poznan Univ Life Sci Piatkowska 94E PL-60649 Poznan Poland

Floods are natural phenomena related to the circulation of water in nature and they cannot be avoided. Despite the methods of predicting floods, technological development and civilization progress, the flood risk has been still increasing. The relevant hydrotechnical advancement, rational spatial development and optimal water management have a significant impact on reducing the consequences of flooding. Particularly retention reservoirs are decisive to rising flood safety and living conditions of urban residents who are at risk of flooding. The construction of a retention reservoir is a serious engineering, economic and eco-scale challenge. It must be preceded by numerous studies and analyses necessary to carry out the entire construction process and subsequent operation in an optimal way. At present, a number of engineering and environmental analyses are supported by the use of forecasting and computational tools based on the mathematical description of a given physical phenomenon. With their use, it is possible to determine, at the design level, the impact of a technical facility on various elements of the natural or the human environment. The paper presents the impact analyses of a planned retention reservoir located on the Prosna river in the flood protection system in Kalisz (Poland). The flood protection system is insufficient in Kalisz and its weakness was demonstrated, among others, by flood in May, 2010. Analyses were based on data received from the unsteady flow numerical modelling system and optimisation methods to support the management process of retention reservoir resources for extreme periods. The formulated task of dynamic optimisation due to its non-linearity was simplified to a static task by discretisation of an independent variable.

关键词： Floods

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Simulation of water turbine with oscillating blades

Simulation of water turbine with oscillating blades

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Energy Efficiency and Agricultural engineering (EE&AE), International conference on

作者： Rositsa Velichkova Detelin Markov Iskra Simova Peter Stankov Radostina A. Angelova Wandong Zheng Guanyi Chen Centre for Research and Design in Human Comfort Energy and Environment (CERDECEN) Technical University of Sofia Sofia Bulgaria School of Environmental Science and engineering Tianjin University Tianjin China

ISBN: (数字)9781728103624

ISBN: (纸本)9781728103631

The paper presents a numerical simulation of the design of a water turbine with oscillating blades. Due to the complexity of the turbine details given in the physical model, simplifications were proposed and applied in the modelling process. The problems and limitations met during the modelling and meshing the turbine runner were discussed. Numerical simulations were performed for six time-regimes. The predicted results showed the complexity of the swirling flor formation and the interaction between the turbine and the flow. Problems of further work in the field were also discussed.

关键词： Turbines Numerical models Blades Computational modeling Wheels mathematical model Energy efficiency

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Simulating the human-building interaction: Development and validation of an agent-based model of office occupant behaviours. 8

Simulating the human-building interaction: Development and v...

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8th Windsor conference 2014: Counting the Cost of Comfort in a Changing World

作者： Langevin, Jared Wen, Jin Gurian, Patrick L. Department of Civil Architectural and Environmental Engineering Drexel University PhiladelphiaPA United States

ISBN: (纸本)9780992895709

This paper develops and validates an agent-based model (ABM) of occupant behaviour using data from a one-year field study in a mid-sized, air-conditioned office building. The full ABM is presented in detail using a standard protocol for describing this type of model. Validation of the ABM assigns simulated occupant "agents" the personal characteristics and environmental context of real office occupants in the field study;executes the model;and compares the model's ability to predict observed fan, heater, and window use to the predictive abilities of several other behaviour modelling options. The predictive performance of the full ABM compares favourably to that of the other modelling options on both the individual and aggregate outcome levels. The full ABM also appears capable of reproducing more familiar regression relationships between behaviour and the local thermal environment. © 2014 Proceedings - Windsor conference 2014: Counting the Cost of Comfort in a Changing World. All rights reserved.

关键词： Office buildings

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modelling Optogenetic Subthreshold Effects 41

Modelling Optogenetic Subthreshold Effects

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41st Annual International conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Luo, Jun wen Nikolic, Konstantin Degenaar, Patrick Newcastle Univ Sch Engn Newcastle Upon Tyne NE1 7RU Tyne & Wear England Imperial Coll London Inst Biomed Engn London SW7 2AZ England

ISBN: (纸本)9781538613115

We develop a system-level approach to modelling optogenetic-neurons firing behaviour in in-vivo conditions. This approach contains three sub-modules: 1) a Mie/Rayleigh scattering mode of light penetration in tissue;2) a classic likelihood Poisson spiking train model;3) a 4-state model of the Channelrhodopsin-2 (ChR2) channel added to a CA3 neuron Hodgkin-Huxley model. We first investigate opto-neurons light-to-spike mechanisms in an in-vivo model: the background noise (synaptic currents) play a dominant role in generating spikes rather than light intensities as for in-vitro conditions (Typically the required light intensity is less than 0.3 mW/mm(2) for in-vivo). Then the spiking fidelity is analyzed for different background noise levels. Next, by combining light penetration profiles, we show how neuron firing rates decay as tissue distance increases, for a 2D dimensional cross-section. This preliminary data clearly demonstrate that at given light stimulation protocol, the maximum effected distance in-vivo is 250 pm with small frequency decay rates, while for in-vitro is 50 mu m with considerable frequency decay rates. Therefore, the developed model can be used for designing sensible light stimulation strategies in-vivo and opto-electronics systems.

关键词： Neurons Ions Firing Scattering Brain modeling mathematical model Noise measurement

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Conventional controllers and fuzzy-PID controllers for speed control of DC-servo motor

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AIP conference Proceedings 2023年第1期2477卷

作者： S. H. Suresh Kumar Budi P. Maheshwara Rao V. Likith Mohan Assistant professor CMR Technical Campus Medchal Hyderabad Telangana India Assistant professor Dept. of EEE Visakha Institute of Engineering & Technology Visakhapatnam Andhra Pradesh India Assistant professor Dept. of EEE Raghu Engineering College Visakhapatnam Andhra Pradesh India

Automated control systems play’s a major role in our everyday life applications and in industrial applications like speed control, position control, automated cruise control to reduce complexness and which makes simple to human existence life. DC servo is one of the components mainly used in automatic systems. Actuator module that can be utilized in programmed frameworks to perform system actual functions [13]. DC motor is one of the fundamental parts which is regularly utilized as actuator to play out the undertakings in the automatic system [1]. Present work is to investigate mathematical modelling and transfer function for speed control of DC servo motor with conventional controller and Fuzzy-PID controller [9].model that represents virtually all practical systems [3].DC servo motor’s mathematical model and equation were extracted and created Simulink model in MATLAB for speed control using proportional integral derivative. In order to obtain more compact speed control, Fuzzy logic controller is used and the proposed control strategy improves the performance of DC-servo motor as the load on the motor suddenly changes and compare the controller results that gives the fuzzy logic controller is more beneficial in DC servo motor position control and speed control when comparing with the conventional controller.

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modelling and Simulation of Pneumatic Sources for Soft Robotic Applications

Modelling and Simulation of Pneumatic Sources for Soft Robot...

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IEEE/ASME (AIM) International conference on Advanced Intelligent Mechatronics

作者： Matheus S. Xavier Andrew J. Fleming Yuen K. Yong School of Electrical Engineering and Computer Science The University of Newcastle Callaghan NSW Australia

ISBN: (数字)9781728167947

ISBN: (纸本)9781728167954

The mathematical models for two widely used pneumatic systems in the soft robotics community are presented: syringe pumps and compressed air systems. These models enable prediction and optimisation of performance of soft actuators under pressurisation, allowing the user to select pneumatic components for a desired behaviour. Analytical models are confirmed with simulations developed using SimScape Fluids and SimScape Electrical within Simulink/MATLAB. By using a polytropic law, the models show agreement with the simulations with less than 10% discrepancy for the typical pressures used with soft actuators. Syringe pumps are shown to be much slower compared to the compressed air systems. In the latter, the addition of an air receiver allows very short actuation time.

关键词： mathematical model Atmospheric modeling Actuators Receivers Soft robotics Analytical models Pneumatic systems

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