Vibroengineering PROCEDIA最新文献_第5页

Non-linear analysis of eccentric compression of steel and steel fiber reinforced high strength concrete column 钢及钢纤维增强高强混凝土柱偏心受压非线性分析

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23544

Zhe Li, Fuchun Li, Yuhang Zhao, Shuai Zhang

{"title":"Non-linear analysis of eccentric compression of steel and steel fiber reinforced high strength concrete column","authors":"Zhe Li, Fuchun Li, Yuhang Zhao, Shuai Zhang","doi":"10.21595/vp.2023.23544","DOIUrl":"https://doi.org/10.21595/vp.2023.23544","url":null,"abstract":"To improve the ductility of high-strength concrete and enhance the ductility and load-bearing capacity of steel reinforced high-strength concrete (SRHSC) columns, steel fibers were added to SRHSC to prepare steel and steel fiber reinforced high-strength concrete (SSFRHSC) columns. In order to study the eccentric compression of SSFRHSC columns, based on the experimental study of the eccentric compression of SSFRHSC columns, finite element model specimens of SSFRHSC eccentric columns were established using ABAQUS software, and the accuracy of the model was verified by combining the test results. On the basis of the experiments, the parameters such as steel fiber volume rate, concrete strength and eccentricity distance were further changed to extend the study. The results show that: with the increase of the volume rate of steel fiber from 0.5 % to 3 % and the concrete strength from C40 to C90, the ultimate bearing capacity of the specimen increases by 40.81 % and 58.69 % respectively; at the same time, when the eccentric distance increases from 0 mm to 100 mm, the ultimate bearing capacity of the specimen decreases by 66.76 %, and when the eccentric distance When the eccentricity distance was increased from 0 mm-40 mm to 60 mm-100 mm, the structural damage form changed from brittle damage to ductile damage.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135618859","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

Numerical simulation of the propagation and distribution of explosion shock waves in trenches 爆炸冲击波在战壕中传播与分布的数值模拟

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23570

Xiongwei Zheng, Liangquan Wang, Chundong Xu

引用次数: 0

Estimating the frequencies of vibration signals using a machine learning algorithm with explained predictions 使用机器学习算法估计振动信号的频率，并进行解释预测

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23678

Daniela Giorgiana Burtea, Gilbert-Rainer Gillich, Cristian Tufisi

引用次数: 0

Design peculiarities and mathematical model of an enhanced low-frequency vibratory cavitation device 增强型低频振动空化装置的设计特点及数学模型

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23577

Ivan Aftanaziv, Vitaliy Korendiy, Oleksandr Kachur, Orysia Strogan, Inga Svidrak, Rostyslav Stotsko

{"title":"Design peculiarities and mathematical model of an enhanced low-frequency vibratory cavitation device","authors":"Ivan Aftanaziv, Vitaliy Korendiy, Oleksandr Kachur, Orysia Strogan, Inga Svidrak, Rostyslav Stotsko","doi":"10.21595/vp.2023.23577","DOIUrl":"https://doi.org/10.21595/vp.2023.23577","url":null,"abstract":"The thorough analysis of the technological processes used to purify the wastewater from food and processing enterprises (bakery, brewery, coffee, sugar, beverage, etc.) has established that among the most effective processes are the physical ones. From the wide range of physical methods of wastewater treatment, the cavitation treatment methods are of the most promising from the viewpoint of industrial application. The present paper considers an enhanced design of a low-frequency vibratory cavitation device with an electromagnetic drive. Unlike many other cavitators of ultrasonic or hydrodynamic action, the proposed vibratory cavitation device can treat the wastewater in a continuous liquid flow, has no rotating components and parts, which significantly increases its reliability and durability, and can be equipped with changeable concaves (grates) depending on the pollutants to be purified. The research methodology consists of two main stages: development of the dynamic diagram and mathematical model of the considered cavitation device; numerical simulation of the working members vibrations at different operational conditions. The obtained results are presented in the form of time dependencies of the concaves (grates) displacements, speeds, and accelerations under various viscous friction and excitation parameters. The main scientific novelty of this study, in addition to the improved design of the vibratory cavitator, is considering the influence of the changeable electromagnetic excitation force and viscous friction force on the dynamic behavior of the concaves (grates). Further investigations on the present topic can be focused on the practical implementation and experimental testing of the proposed cavitation device in order to increase the water purification degree.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135618711","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

Influence of vibration and environmental factors on a crimped assembly resistivity 振动和环境因素对压接组件电阻率的影响

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23681

Dragomir Florin, Manescu Tiberiu, Gilbert-Rainer Gillich, Zoltan-Iosif Korka, Tufisi Cristian

引用次数: 0

Enhancing static load test of pipe pile composite foundation with innovative elastic cushioning technology 创新弹性缓冲技术加强管桩复合地基静载试验

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23576

Fenqiang Xu, Yunlong Yao, Qinghui Li, Zhiwei Shao, Guisen Wang

引用次数: 0

Synthesis of lithium slag-based ANA zeolite and molecular dynamics study of carbon dioxide adsorption performance 锂渣基ANA沸石的合成及二氧化碳吸附性能的分子动力学研究

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23545

Haibin Wu, Xiaojing Wang, Wei Su

引用次数: 0

Probabilistic seismic hazard analysis based on monthly maximum PGA distribution in three cities in southwest China 基于月最大PGA分布的西南三市地震危险性概率分析

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23668

Dezhi Fang, Yinfeng Dong, Xiaoquan Xu

{"title":"Probabilistic seismic hazard analysis based on monthly maximum PGA distribution in three cities in southwest China","authors":"Dezhi Fang, Yinfeng Dong, Xiaoquan Xu","doi":"10.21595/vp.2023.23668","DOIUrl":"https://doi.org/10.21595/vp.2023.23668","url":null,"abstract":"Probabilistic seismic hazard analysis is an important scientific basis for building seismic fortification. Unlike most seismic hazard analyses starting from the perspective of magnitude, this paper presents a seismic hazard analysis method based on the monthly maximum peak ground acceleration (PGA) distribution. In this paper, cities of Chongqing, Chengdu, and Kunming in southwest China are taken as examples where historical earthquake events from 1920 to 2020 with surface wave magnitude (Ms) greater than or equal to 3 and epicentral distances within 400 km are selected for analysis. PGA data are back-calculated from Ms data recorded in the earthquake catalog using the attenuation relation of seismic parameters. By considering the monthly maximum PGA values of the three cities as statistical samples, regression analysis is performed to obtain the monthly maximum PGA distribution and the frequency-PGA relation respectively. Based on the Poisson model and the parameters obtained from the regression analysis, then seismic hazard analysis is conducted to derive year exceedance probability vs. PGA curves and recurrence interval vs. PGA curves. Finally, earthquake events with the epicentral distance within 200 km, 300 km, and 400 km are respectively analyzed to discuss the influence of the epicentral distance on results of seismic hazard analysis.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135618707","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

Reliability testing and assessment of a hydraulic cylinder for precision production 精密生产用液压缸可靠性试验与评价

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23593

Youquan Fan, Zhongfa Wu, Wenlin Wang

引用次数: 0

Design of charging station and optimization of oscillation circuits for new energy vehicles 新能源汽车充电站设计与振荡电路优化

Vibroengineering PROCEDIA Pub Date : 2023-10-20 DOI: 10.21595/vp.2023.23621

Wenjing Wang

{"title":"Design of charging station and optimization of oscillation circuits for new energy vehicles","authors":"Wenjing Wang","doi":"10.21595/vp.2023.23621","DOIUrl":"https://doi.org/10.21595/vp.2023.23621","url":null,"abstract":"In order to ensure good charging performance of new energy vehicles, the charging station was designed and the relevant oscillation circuits were optimized. The function and structure of the charging station was determined, and through a hierarchical framework, not only the success rate factor could be corrected, but also a resonant converter was combined to achieve efficient charging over a wide battery voltage range. The linear charging management chip was adopted, which integrated high-precision constant voltage source, temperature monitoring, charging status display, and battery charging completion termination function. The changes in excitation current and switching frequency during the charging process were studied, and the optimization basis for the relevant circuits was determined. A trigger was added to the input end of the oscillator to filter the input signal, which improved the accuracy of the RC oscillator cycle. The clock reference oscillation circuit and stable voltage power supply circuit were optimized. In order to verify the effectiveness of the proposed electronic control design, a hardware platform for the test of DC output characteristics was built. The results indicate that the output voltage waveform can effectively meet the working requirements.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135618571","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