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Modelling and Simulation in Engineering最新文献

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A Study on Wind Pressure Characteristics of a Large-Span Membrane Structure under the Fluctuating Wind in a Vertical Direction Based on a Large Eddy Simulation 基于大涡模拟的垂直脉动风作用下大跨度膜结构风压特性研究
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-11-14 DOI: 10.1155/2022/8209487
Fangjin Sun, Haoxuan Tang, Mingjin Lu, Daming Zhang, Chen Lu
{"title":"A Study on Wind Pressure Characteristics of a Large-Span Membrane Structure under the Fluctuating Wind in a Vertical Direction Based on a Large Eddy Simulation","authors":"Fangjin Sun, Haoxuan Tang, Mingjin Lu, Daming Zhang, Chen Lu","doi":"10.1155/2022/8209487","DOIUrl":"https://doi.org/10.1155/2022/8209487","url":null,"abstract":"This paper reports the wind pressure characteristics on long-span roofs under fluctuating wind in a vertical direction based on a large eddy simulation (LES). Three types of roofs, i.e., saddle, wavy, and continuous arch roofs, are tested. First, the membrane structure canopy is measured, and the model is established for numerical simulation. The computational models and methods are verified by comparing the obtained wind pressure distributions on the roof with the measured results and numerical simulation results under other methods. Next, a numerical simulation is performed to understand not only the wind pressure and the wind speed time series but also the wind vibration responses and fluid-solid coupling. The effects of lateral fluctuating wind at different wind speeds on the wind-induced vibration response and wind pressure distribution of different membrane structures are studied. Based on the results, the wind pressure zones of the roofs are discussed. Furthermore, the original structures are optimized and numerically simulated considering the streamlined design concept to study the influence mechanism of fluctuating wind on the roof in more detail.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"28 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80321446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Numerical Simulation Study of Progressive Collapse of Reinforced Concrete Frames with Masonry Infill Walls under Blast Loading 爆破荷载作用下砌体填充墙钢筋混凝土框架连续倒塌数值模拟研究
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-11-11 DOI: 10.1155/2022/1781415
Qinghua Xu, Xuezhi Zhen, Yu Zhang, Mengjun Han, Wenkang Zhang
{"title":"Numerical Simulation Study of Progressive Collapse of Reinforced Concrete Frames with Masonry Infill Walls under Blast Loading","authors":"Qinghua Xu, Xuezhi Zhen, Yu Zhang, Mengjun Han, Wenkang Zhang","doi":"10.1155/2022/1781415","DOIUrl":"https://doi.org/10.1155/2022/1781415","url":null,"abstract":"The influence of masonry infill walls on the progressive collapse performance of reinforced concrete (RC) frame structures was investigated in this paper, using a nonlinear dynamic analysis approach. Based on ANSYS/LS-DYNA finite element software, two finite element models of RC frame structures with and without masonry infilled walls were established. Then, the collapse modes of the two RC frame structure models were analyzed for different scaled distance blast loads, different locations of column damage, and different span numbers. The results show that with the increase of explosive amount, the collapse degree of the structure is more serious in the same time. Under the condition of destroying the outermost central column, the degree of progressive collapse of the RC frame model with infilled walls in the same time is lower than that of the RC frame model without infilled walls. The RC frame model with infilled walls is more resistant to collapse when the outermost side columns are damaged. With the increase of span number, the structure is more likely to be damaged and collapsed.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"2 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90992297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Low-Frequency Analytical Model of Superconducting Magnet Impedance 超导磁体阻抗的低频解析模型
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-11-07 DOI: 10.1155/2022/2105847
M. Martino
{"title":"Low-Frequency Analytical Model of Superconducting Magnet Impedance","authors":"M. Martino","doi":"10.1155/2022/2105847","DOIUrl":"https://doi.org/10.1155/2022/2105847","url":null,"abstract":"A superconducting magnet for particle accelerators is often modeled as an ideal inductor, as it indeed exhibits a completely negligible resistance; this is fully satisfactory, as an example, for control purposes, as the time constant formed by the magnet inductance and the resistance of normal conducting cables connecting it to the power converter accurately describe the essentially dominant dynamics of the circuit. Such a model would however fail to correctly represent the noise attenuation mechanism at play in practical superconducting magnets, which also include a vacuum pipe or a beam screen in the inner part of the aperture, an iron yoke on the outer part, and, potentially, a stainless steel or aluminum collar in between. Even at relatively low frequencies, a more accurate model is therefore needed. A sufficiently general one is proposed and illustrated.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"32 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79227654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On Wiener Process Degradation Model for Product Reliability Assessment: A Simulation Study 产品可靠性评估的Wiener过程退化模型仿真研究
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-11-07 DOI: 10.1155/2022/7079532
Herbert Hove, Farai Mlambo
{"title":"On Wiener Process Degradation Model for Product Reliability Assessment: A Simulation Study","authors":"Herbert Hove, Farai Mlambo","doi":"10.1155/2022/7079532","DOIUrl":"https://doi.org/10.1155/2022/7079532","url":null,"abstract":"This paper examines the application of the Wiener process as a degradation model. Its appropriateness as a degradation model is discussed and demonstrated with the aid of Monte Carlo simulations. In particular and for monotonically degrading systems, this paper demonstrates that the irreversible accumulation of damage can be modelled by the Wiener maximum process. First passage times of the Wiener and its maximum process are also revealed to coincide. Practical advantages of assessing system reliability from degradation data are highlighted by applying the Wiener process model to a real gallium arsenide (GaAs) laser data for telecommunication systems. The real data application results demonstrate that degradation analysis allows for conclusions about system reliability to be reached earlier without compromising estimation accuracy—a major practical advantage.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"31 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74952128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Case Study on Analyses of Slope Riverbank Failure 边坡河堤破坏分析实例研究
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-10-26 DOI: 10.1155/2022/1965224
N. Taha, M. Shariff, M. A. Ladin
{"title":"Case Study on Analyses of Slope Riverbank Failure","authors":"N. Taha, M. Shariff, M. A. Ladin","doi":"10.1155/2022/1965224","DOIUrl":"https://doi.org/10.1155/2022/1965224","url":null,"abstract":"A slope riverbank failure is a natural event that occurs globally on each riverbank, and a drawdown event usually causes slope riverbank failure. This case study is aimed at analysing slope riverbank failures by evaluating the seepage and slope stability of the riverbank under slow and rapid drawdown. The riverbank in this case study is located at KM 3.49, Jalan Pantai Luagan in the Sipitang district (N 4° 59\u0000 \u0000 ′\u0000 \u0000 12.9\u0000 \u0000 \u0000 \u0000 \u0000 ″\u0000 \u0000 \u0000 \u0000 E 115° 31\u0000 \u0000 ′\u0000 \u0000 13.3\u0000 \u0000 \u0000 \u0000 \u0000 ″\u0000 \u0000 \u0000 \u0000 ). A literature review was conducted to view the current study pattern and retrieve a methodology based on the current study pattern. GeoStudio is a commercial finite element software. The data obtained from the borehole log report and online resources were utilised to create the riverbank model in software. The phreatic line shows a slow change over time, indicating that the riverbank takes a long time to stabilise after the drawdown. The FOS value decreases during the drawdown occurrence and slowly increases after the drawdown has ended. In conclusion, the drawdown event can cause slope riverbank failure, and the seepage and stability analysis using GeoStudio can show the condition of the riverbank during the drawdown event.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"23 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84493195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Rayleigh Flexible Weibull Extension (RFWE) Distribution with Applications to Real and Simulated Data 新型瑞利柔性威布尔扩展(RFWE)分布及其在真实和模拟数据中的应用
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-10-22 DOI: 10.1155/2022/7718284
Muneeb Javed, S. M. Asim, A. Khalil, Said Farooq Shah, Z. Almaspoor
{"title":"New Rayleigh Flexible Weibull Extension (RFWE) Distribution with Applications to Real and Simulated Data","authors":"Muneeb Javed, S. M. Asim, A. Khalil, Said Farooq Shah, Z. Almaspoor","doi":"10.1155/2022/7718284","DOIUrl":"https://doi.org/10.1155/2022/7718284","url":null,"abstract":"The Rayleigh flexible Weibull extension (RFWE) distribution, a new three-parameter model introduced in this paper, is a generalization of the flexible Weibull extension. This model produces best fit for failure time of electronic device obtained from power-linkage voltage spikes during electronic storms. We derive the statistical properties of the RFWE distribution. The parameters of this new distribution are estimated using the maximum likelihood method, which also yielded asymptotic confidence bounds. This model is examined using both real and simulated data. Under various priors, an additional Bayesian estimate is also carried out. The Bayes estimates and other posterior results are calculated using simulations.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"49 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72884657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mathematical Modeling and Performance Evaluation of 3D Ferroelectric Negative Capacitance FinFET 三维铁电负电容FinFET的数学建模与性能评价
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-10-19 DOI: 10.1155/2022/8345513
S. Alam, Rukon Uddin, M. J. Alam, Ahamed Raihan, S. Mahtab, Subrata Bhowmik
{"title":"Mathematical Modeling and Performance Evaluation of 3D Ferroelectric Negative Capacitance FinFET","authors":"S. Alam, Rukon Uddin, M. J. Alam, Ahamed Raihan, S. Mahtab, Subrata Bhowmik","doi":"10.1155/2022/8345513","DOIUrl":"https://doi.org/10.1155/2022/8345513","url":null,"abstract":"Ferroelectric negative capacitance materials have now been proposed for lowering electronics energy dissipation beyond basic limitations. In this paper, we presented the analysis on the performance of negative capacitance (NC) FinFET in comparison with conventional gate dielectrics by using a separation of variables approach, which is an optimal quasi-3D mathematical model. The result has been signified steeper surface potential (ψ), lower threshold voltage (Vth), 1.2 mA of on-state current (Ion), and enhanced immunity of negative capacitance FinFET against short channel effects (SCE’s) like 35.3 mV/V of drain-induced barrier lowering (DIBL), 60 mV/dec of subthreshold swing (SS) along with smallest off state current (Ioff) among another conventional gate dielectric. Hence, NC FinFET can be a potential candidate for low power and high-performance device.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87315844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation of the Industrial Oil Adsorption Purification Process for Automation Tasks 面向自动化任务的工业油吸附净化过程仿真
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-10-14 DOI: 10.1155/2022/2738654
Liudmyla Yaroshchuk, Yevheniia Tiurina
{"title":"Simulation of the Industrial Oil Adsorption Purification Process for Automation Tasks","authors":"Liudmyla Yaroshchuk, Yevheniia Tiurina","doi":"10.1155/2022/2738654","DOIUrl":"https://doi.org/10.1155/2022/2738654","url":null,"abstract":"Objective reasons associated with an increase of transport quantity and the volume of industrial goods and energy service production lead to the accumulation of used oils and greases. These substances can be reused in the case of their purification. Such resource saving is facilitated by the development of technologies, in particular, adsorption purification and efficient systems for their automation. The article carried out a detailed analysis of the continuous adsorption purification technological system and indicated its significant differences from the point of view of control systems with special preparation of raw materials. The conclusion about the presence of nonstationarity and stochasticity sources of continuous adsorption as a control object is substantiated, which made it possible to impose requirements on the properties of the control model. The existing methods of adsorption mathematical description are analyzed within their use for continuous control. Structures of dynamic models based on a combination of analytical and experimental methods are proposed. Analytical models are based on mass balances of substances, known forms of approximations for describing equilibrium conditions and adsorption kinetics are studied, and experimental and statistical modeling is carried out to determine possible structures of the connection between technological variables during control. A structural-parametric scheme of the model and a scheme for its adaptation in control systems have been formed. An example of an adsorption simulation model formation using MATLAB+Simulink is shown. The results can be used to develop software for control systems of continuous adsorption and to test control algorithms.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"2 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79438895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Designing of Fiber Bragg Gratings for Long-Distance Optical Fiber Sensing Networks 远距离光纤传感网络中光纤Bragg光栅的设计
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-10-05 DOI: 10.1155/2022/8331485
J. Braunfelds, Elvis Haritonovs, U. Seņkāns, I. Kurbatska, I. Murans, J. Porins, S. Spolitis
{"title":"Designing of Fiber Bragg Gratings for Long-Distance Optical Fiber Sensing Networks","authors":"J. Braunfelds, Elvis Haritonovs, U. Seņkāns, I. Kurbatska, I. Murans, J. Porins, S. Spolitis","doi":"10.1155/2022/8331485","DOIUrl":"https://doi.org/10.1155/2022/8331485","url":null,"abstract":"Most optical sensors on the market are optical fiber Bragg grating (FBG) sensors with low reflectivity (typically 7-40%) and low side-lobe suppression (SLS) ratio (typically SLS <15 dB), which prevents these sensors from being effectively used for long-distance remote monitoring and sensor network solutions. This research is based on designing the optimal grating structure of FBG sensors and estimating their optimal apodization parameters necessary for sensor networks and long-distance monitoring solutions. Gaussian, sine, and raised sine apodizations are studied to achieve the main requirements, which are maximally high reflectivity (at least 90%) and side-lobe suppression (at least 20 dB), as well as maximally narrow bandwidth (FWHM<0.2 nm) and FBGs with uniform (without apodization). Results gathered in this research propose high-efficiency FBG grating apodizations, which can be further physically realized for optical sensor networks and long-distance (at least 40 km) monitoring solutions.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"52 6 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89444666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Anaerobic Co-Digestion of Human Feces with Rice Straw for Biogas Production: A Case Study in Sunyani 人类粪便与稻草厌氧共消化产沼气:以苏亚尼为例
IF 3.2
Modelling and Simulation in Engineering Pub Date : 2022-09-15 DOI: 10.1155/2022/2608045
Irédon Adjama, N. Derkyi, F. Uba, G. Akolgo, Richard Opuko
{"title":"Anaerobic Co-Digestion of Human Feces with Rice Straw for Biogas Production: A Case Study in Sunyani","authors":"Irédon Adjama, N. Derkyi, F. Uba, G. Akolgo, Richard Opuko","doi":"10.1155/2022/2608045","DOIUrl":"https://doi.org/10.1155/2022/2608045","url":null,"abstract":"The choice of feedstock for biogas production should not only be limited to organic waste like agricultural products, food, and animal waste. Human feces could also be considered a source of biogas production. The ever-increasing cost of fossil fuels and environmental pollution threats are forcing the search for alternative energy sources. Several types of research have to unlock the mysteries behind the difficulties of producing biogas from human feces, especially the production of more HN3, which is a greenhouse gas because of its low C:N ratio. This research experimentally investigated how to reduce their amount using rice straw with a high C:N ratio. Several combinations were made between the human waste and the rice straw at different ratios during the experiment. The result shows that the optimal outcome for methane production fell on the 50% HF and 50% RS combination due to the actions of both aerobic and anaerobic processes.","PeriodicalId":45541,"journal":{"name":"Modelling and Simulation in Engineering","volume":"46 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85391606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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