Vibroengineering PROCEDIA最新文献_第2页

Safety evaluation of tubing and sucker rod vertically handling equipment under stochastic wind load 随机风荷载下管材和抽油杆垂直搬运设备的安全评估

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23710

Xinzhong Wang, Shengsong Huang, Tao Li, Donghuan Liu

引用次数: 0

Method of co-seismic fault displacement estimate based on peak ground acceleration 基于峰值地面加速度的同震断层位移估算方法

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23732

Qingyun Zhou, Ruxin Zhuang

引用次数: 0

Estimation of wave velocity and analysis of dispersion characteristics based on wavelet decomposition 基于小波分解的波速估算和频散特性分析

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23749

Feiyu Guo, Yinfeng Dong, Yiping Wang, Xingyu Zhang, Qingshuang Su

{"title":"Estimation of wave velocity and analysis of dispersion characteristics based on wavelet decomposition","authors":"Feiyu Guo, Yinfeng Dong, Yiping Wang, Xingyu Zhang, Qingshuang Su","doi":"10.21595/vp.2023.23749","DOIUrl":"https://doi.org/10.21595/vp.2023.23749","url":null,"abstract":"Due to the complexity of the crustal medium and stratigraphic boundaries, seismic waves typically exhibit attenuation and dispersion after propagation through the medium. By studying the regularity of seismic wave dispersion, soil layer information can be extracted. Current spectral decomposition techniques take less account of signal filtering processing of seismic waves, and the complexity of the stratigraphy tends to reduce the accuracy of dispersion analysis. Based on the above, a new method for calculating the dispersion characteristics of a site from surface and downhole ground vibration recordings is proposed, which is simpler than the spectra analysis of surface waves (SASW) method and eliminates the need for multiple pickups and additional equipment. This method is based on wavelet decomposition and seismic wave filtering, and a numerical simulation example is established to verify the effectiveness of the method. Then, the records of the Tohoku earthquake on March 11, 2011 are used as actual strong earthquake examples for filtering and dispersion analysis. Finally, it is concluded that the seismic wave dispersion analysis method based on wavelet decomposition can effectively filter and analyze seismic waves in specific frequency bands.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231464","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

Nonlinear seismic response of soft soil site in Shanghai 上海软土场地的非线性地震响应

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23753

Xingyu Zhang, Yinfeng Dong, Yiming Xie, Feiyu Guo, Dezhi Fang

{"title":"Nonlinear seismic response of soft soil site in Shanghai","authors":"Xingyu Zhang, Yinfeng Dong, Yiming Xie, Feiyu Guo, Dezhi Fang","doi":"10.21595/vp.2023.23753","DOIUrl":"https://doi.org/10.21595/vp.2023.23753","url":null,"abstract":"Site seismic effects are an important factor affecting the design ground motion input. It is well known that for a deep-covered soft-soil site similar to the Shanghai area, the site will exhibit nonlinear characteristics even under relatively small bedrock ground motion input. Therefore, corresponding to different probability levels of ground seismic motion, the seismic effect of the site is also quite different. In the current design codes, the differences in seismic effects are considered by adjusting the maximum value of the design response spectrum and the characteristic period, and the rationality of this adjustment needs further verification. For this reason, the paper takes the standard site model of 280 m cover thickness commonly used in current research as the benchmark, and utilizes the nonlinear time course analysis to study the seismic response characteristics and the variation law of the response spectra of the site under the frequent earthquakes, design earthquakes and rare earthquakes. The results show that: with the increase of the peak value of the input bedrock seismic wave, the amplification coefficient of the surface response wave of the deep-covered soft-soil site decreases gradually; With the increase of the bedrock input, the acceleration amplification coefficient of the deep soil layer increases obviously, which needs to be taken into account when designing the deep underground structure. The long period amplification effect of the case with larger bedrock input (the design earthquake and rare earthquakes) is obvious, and the amplification effect of the acceleration on the surface due to the nonlinearities of the soil is smaller; The current specification adjusts the maximum value and characteristic period of the design response spectrum to achieve the adjustment of different levels of seismic action, which may lead to the underestimation of the long-period response spectrum.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231859","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

Analysis and prediction of automotive running status based on vibration detection system 基于振动检测系统的汽车运行状态分析与预测

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23659

Bo Yang, Yanchao Wang, Mei Yang

引用次数: 0

Scale optimization design and work behavior analysis of a single leg walking mechanism of quadruped robot 四足机器人单腿行走机构的尺度优化设计和工作行为分析

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23707

Zeguang Han, Hao Cong, Ruiqin Hao, Qiushi Qi, Zhaolong Chu

引用次数: 0

A micro quadruped crawling robot manufactured from PLA material 用聚乳酸材料制造的微型四足爬行机器人

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23694

Qiuxuan Chen, Chong Li, Xinyu Hao

引用次数: 0

Experimental study on plastic deformation of alluvial silty sand under traffic cyclic loading 冲积淤泥砂在交通循环荷载作用下的塑性变形试验研究

Vibroengineering PROCEDIA Pub Date : 2023-11-27 DOI: 10.21595/vp.2023.23748

Yukun Mao, Junsheng Yang, Yue Dai, Dingyi Wu, Bingxu Chen

{"title":"Experimental study on plastic deformation of alluvial silty sand under traffic cyclic loading","authors":"Yukun Mao, Junsheng Yang, Yue Dai, Dingyi Wu, Bingxu Chen","doi":"10.21595/vp.2023.23748","DOIUrl":"https://doi.org/10.21595/vp.2023.23748","url":null,"abstract":"With the development of highway construction, alluvial silt is gradually used as roadbed filler, but its dynamic characteristics are less studied. Based on the highway section from Luanzhou to Qingtuoying of G508, the plastic strain and dynamic stress-dynamic strain development law of alluvial silty sand under cyclic loading are analyzed by GDS dynamic triaxial test. The results show that under the action of a small range of dynamic stress amplitude, the soil sample is not destroyed, and the number of cycles is 1000 times, which is the critical point at which the axial total strain gradually tends to be stable. When the dynamic stress amplitude is 300 kPa, the total axial strain increases linearly, and the soil sample is destroyed. The cumulative plastic strain of the alluvial silt is the smallest when the optimum water content is 8.0 %, the confining pressure is 80 kPa, and the frequency is 1Hz.At this time, the cyclic load has a dense effect on the soil, and the soil structure does not fail. The dynamic stress-strain relationship of alluvial silty sand conforms to the R. L. Kondner hyperbolic model. The greater the confining pressure and the closer the moisture content to the optimal moisture content, the greater the dynamic strength. The research results are helpful to provide reference for other similar projects.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139231953","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

Temperature and cooling analysis of eddy current brake under intense impact load 强冲击负荷下涡流制动器的温度和冷却分析

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23250

Yi Wang, Guo Lai Yang, Lei Li

引用次数: 0

Prediction of polishing roughness of aluminum alloy hard anodized film based on BP and GA-BP neural network 基于 BP 和 GA-BP 神经网络的铝合金硬质阳极氧化膜抛光粗糙度预测

Vibroengineering PROCEDIA Pub Date : 2023-11-25 DOI: 10.21595/vp.2023.23617

Zeliang Wang, Bing Tian, Lingchun Kong, Qingguo Meng

{"title":"Prediction of polishing roughness of aluminum alloy hard anodized film based on BP and GA-BP neural network","authors":"Zeliang Wang, Bing Tian, Lingchun Kong, Qingguo Meng","doi":"10.21595/vp.2023.23617","DOIUrl":"https://doi.org/10.21595/vp.2023.23617","url":null,"abstract":"In order to obtain better-polished surface quality of hard anodic oxide film, two deep learning models of the BP neural network and GA-BP neural network were used to establish a roughness prediction model for aluminum alloy hard anodic oxide film polishing. The experimental data was divided into two groups, one group of data was used for model training, and the other group of data was used for model testing. The results showed that the mean square error between the polishing roughness predicted by the BP neural network model and the experimental results was 1.33E-2, the maximum relative error was 18.84 %, the minimum relative error was 0.77 %, and the average relative error was 10.46 %. The error is relatively large, and the degree of variation of the error is relatively large; the mean square error of the polishing roughness predicted by the GA-BP neural network model and the test results is 0.58E-2, the maximum relative error is 14.28 %, the minimum relative error is 0.51%, the average relative error is 6.61 %, the error is smaller, and the degree of error change is smaller; the prediction accuracy of the GA-BP model is the highest, and the generalization ability strongest.","PeriodicalId":262664,"journal":{"name":"Vibroengineering PROCEDIA","volume":"9 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139237457","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