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59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022最新文献

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Experimental study on creep wetting of silty clay 粉质粘土蠕变润湿试验研究
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22924
D. Qi, Jianxin Yang, Yuehan Liu
{"title":"Experimental study on creep wetting of silty clay","authors":"D. Qi, Jianxin Yang, Yuehan Liu","doi":"10.21595/vp.2022.22924","DOIUrl":"https://doi.org/10.21595/vp.2022.22924","url":null,"abstract":"To study the wetting of a silty clay subgrade in an expressway, many laboratory tests were carried out. The test results show that the creep deformation of silty clay under water immersion cannot be ignored, but it is different from the deformation caused by wetting. The creep properties of soil mass are affected by many factors. Under different stress conditions, the soil mass will show different properties. In order to study the creep characteristics of silty clay in Chongqing under water wetting and different stress levels, a series of triaxial water wetting creep tests were carried out. The Singh-Mitchell creep equation was introduced to establish the creep model of silty clay drainage in Chongqing, and the parameters of the model were discussed.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"81 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113997278","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
Failure mechanism on sulfate attack and dissolved corrosion of diseased tunnel lining structure 病害隧道衬砌结构硫酸盐侵蚀及溶解腐蚀破坏机理
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22869
Jinwang Mao, N. Liang, Ruhao Yan
{"title":"Failure mechanism on sulfate attack and dissolved corrosion of diseased tunnel lining structure","authors":"Jinwang Mao, N. Liang, Ruhao Yan","doi":"10.21595/vp.2022.22869","DOIUrl":"https://doi.org/10.21595/vp.2022.22869","url":null,"abstract":"To study the corrosion failure mechanism of tunnel lining structure subjected to sulfate attack and dissolved corrosion, site investigation was carried out on a diseased tunnel in Chongqing. The corrosion products were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The results showed that the tunnel lining structure had been exposed to groundwater containing substantial concentrations of salts (SO42-, HCO3-, et al.) for many years, resulted that the concrete strength was lower than its design value. The formation of thaumasite made concrete lose its strength completely. Concrete structure would be destroyed when crystallization pressure exceeded the tensile strength of concrete. The tunnel also appeared dissolved corrosion which made the cement stone density and concrete strength reduce.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295253","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 dynamic performance and wheel-rail wear of railway wagon under deviation of cargo gravity center 货物重心偏离下铁路货车动力性能及轮轨磨损仿真
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22908
Wei Song, Junguo Wang, Yong-zhi Zhao
{"title":"Simulation of dynamic performance and wheel-rail wear of railway wagon under deviation of cargo gravity center","authors":"Wei Song, Junguo Wang, Yong-zhi Zhao","doi":"10.21595/vp.2022.22908","DOIUrl":"https://doi.org/10.21595/vp.2022.22908","url":null,"abstract":"A multibody dynamic model of railway wagon is established by Simpack software, and the derailment coefficient, wheel load reduction rate, impact angle and wear index of freight car are calculated under different gravity center offsets and different curve conditions. The simulation results show that the lateral and longitudinal offsets of cargo gravity center have a great influence on the derailment coefficient, wheel unloading rate, impact angle and wear index of the vehicle. The larger the offset of the cargo gravity center is, the worse the operation performance of the wagon is, the more serious the wheel-rail wear is, and the shorter the transport life of the wagon is. The smaller the radius of the curve is, the greater the impact is.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115315942","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
Finite element analysis of gear of full-rotating propeller steering assembly 全回转螺旋桨操舵总成齿轮的有限元分析
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22905
Qiupeng Wu, J. She, Ning Chen
{"title":"Finite element analysis of gear of full-rotating propeller steering assembly","authors":"Qiupeng Wu, J. She, Ning Chen","doi":"10.21595/vp.2022.22905","DOIUrl":"https://doi.org/10.21595/vp.2022.22905","url":null,"abstract":"In order to ensure that the gear of the steering component of the full-rotation propeller meets the limit of bearing capacity and normal use under the action of moment load, this paper takes a steering propeller device as the research object, establishes the finite element model of the gear of the steering component under normal and braking conditions, carries out stress bending strength analysis, and carries out modal analysis. It is verified that the gear of the steering assembly meets the safety requirements, which provides a reference for the design of the steering device.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133406571","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 and experimental investigation of kinematic characteristics of the wheeled in-pipe robot actuated by the unbalanced rotor 不平衡转子驱动轮式管道机器人运动特性的仿真与实验研究
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22971
V. Korendiy, O. Kachur, V. Gurey, Rostyslav Predko, R. Palash, O. Havrylchenko
{"title":"Simulation and experimental investigation of kinematic characteristics of the wheeled in-pipe robot actuated by the unbalanced rotor","authors":"V. Korendiy, O. Kachur, V. Gurey, Rostyslav Predko, R. Palash, O. Havrylchenko","doi":"10.21595/vp.2022.22971","DOIUrl":"https://doi.org/10.21595/vp.2022.22971","url":null,"abstract":"Mobile robotic systems are currently of significant interest due to the wide range of possible applications. Among a great variety of mobile robots, specific attention is paid to the wheeled ones. The main purpose of this research consists in substantiating the possibilities of improving the vibration-driven robot equipped with the unidirectionally rotating wheels. The methodology of the present study contains the development of the robot’s 3D-model in the SolidWorks software, constructing the simplified dynamic diagram of the robot’s oscillatory system, and developing its simulation model in the MapleSim software. The research results are obtained by numerical solving of the motion equations in the MapleSim software, by simulating the robot locomotion conditions in the SolidWorks software, and by conducting experiments. The results present the main kinematic characteristics of the robot motion under different operational conditions. The major scientific novelty of this paper consists in developing the improved design of the wheeled robot driven by the centrifugal (inertial) vibration exciter and substantiating its operational peculiarities. The obtained results can be effectively used while creating the production prototypes of mobile robotic systems, particularly those for cleaning the pipelines and monitoring (inspecting) their inner surfaces, welds, joints, couplings, etc.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121275643","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
Modal analysis of spur gears for varied teeth root cracks characteristics: finite element analysis (FEA) simulations 正齿轮不同齿根裂纹特性的模态分析:有限元分析(FEA)仿真
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22936
Thaer M. I. Syam, Yousif Badri, Sadok Sassi, J. Renno
{"title":"Modal analysis of spur gears for varied teeth root cracks characteristics: finite element analysis (FEA) simulations","authors":"Thaer M. I. Syam, Yousif Badri, Sadok Sassi, J. Renno","doi":"10.21595/vp.2022.22936","DOIUrl":"https://doi.org/10.21595/vp.2022.22936","url":null,"abstract":"Gear failure is considered the main alarming and undesirable event in gearboxes. Usually, cracks happen by fatigue caused due to cyclic loading. Fatigue stress is focused on the teeth root because of the small tooth fillet radius. This causes progressive damage to gear teeth which causes teeth failure, and hence, a damaged gear. This work shows a numerical framework to identify and quantify cracks' existence at the teeth root of spur gears. The problem is numerically analysed through finite element-based simulation with ANSYS by conducting a modal analysis. There are nine cases of gears with different cracks on their tooth; these cracks are varied by their number (single or multiple), Crack Length Percentage (CLP %), and location. The FEA is used to simulate all nine cases to predict the bending natural frequency of teeth and to investigate the effects of the variation of the crack by looking at the natural frequency of the teeth bending as well as the deformation level. Results revealed that the teeth bending natural frequency decreases as the CLP% increases. In addition, the gear stiffness is calculated based on the natural frequency and gear’s mass and it is indicated that the stiffness decreases as the CLP% increases, while the deformation level increase with CLP%.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"2013 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132835501","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 of the effect of squeeze film damper on the bending-torsional coupling vibration characteristics of dual-rotor system 挤压膜阻尼器对双转子系统扭扭耦合振动特性的影响分析
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22902
Zhu Jin, Moli Chen, Guihuo Luo, Lin Yue
{"title":"Analysis of the effect of squeeze film damper on the bending-torsional coupling vibration characteristics of dual-rotor system","authors":"Zhu Jin, Moli Chen, Guihuo Luo, Lin Yue","doi":"10.21595/vp.2022.22902","DOIUrl":"https://doi.org/10.21595/vp.2022.22902","url":null,"abstract":"The study of the vibration reduction characteristics of SFD to the bending-torsional coupled vibration of the dual-rotor system can provide support for the structural design of aero-engines. Based on the overall eccentric disc model, the bending-torsional coupling dynamic equation of the dual-rotor system is established in this paper. The amplitude and nonlinear periodic characteristics of the dual-rotor system are obtained by combining Newmark-β method and Newton-Raphson method. The results show that the vibration reduction effect of SFD on bending-torsional coupling vibration is closely related to the speed. The vibration reduction effect of SFD is weak at the first-order critical speed range and below, and reduces the torsional amplitude by 70 % at the second-order critical speed range and above. SFD kept the bending-torsional coupling vibration of the dual-rotor system stable in a stable 5-period motion state.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114329485","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
Effect of acoustic black hole parameters on vibration suppression of rectangular plate 声黑洞参数对矩形板振动抑制的影响
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22696
Xiaofei Du, Q. Gu
{"title":"Effect of acoustic black hole parameters on vibration suppression of rectangular plate","authors":"Xiaofei Du, Q. Gu","doi":"10.21595/vp.2022.22696","DOIUrl":"https://doi.org/10.21595/vp.2022.22696","url":null,"abstract":"The acoustic black hole has the ability to gather and manipulate the flexural wave in the structure, and can be used to achieve vibration suppression of the structure. A group of FEM models for the vibration analysis of the rectangular plate embedded with acoustic black holes were established in this paper. Four monitoring points on the ABH plate were selected to calculate their vibration velocity response in 100 Hz-3 kHz frequency interval. In order to study the effects of acoustic black hole geometric parameters and damping layer geometric parameters on the vibration response of the ABH plate, 15 combinations of different parameters of the maximum ABH diameter, the truncated thickness of the ABH, the power index of the ABH, and the damping layer thickness, the maximum diameter of the damping layer were selected to calculate the vibration velocity response of the four monitoring points. The calculation result can help us understand the effects of acoustic black hole geometric parameters and damping layer geometric parameters on the vibration suppression of rectangular plate.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126379014","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
Evaluation of segment convergence and settlement of subway shield tunnel in water-rich complex stratum 富水复杂地层中地铁盾构隧道管段收敛沉降评价
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22956
Lei Feng, Jinping Li, Binbin He
{"title":"Evaluation of segment convergence and settlement of subway shield tunnel in water-rich complex stratum","authors":"Lei Feng, Jinping Li, Binbin He","doi":"10.21595/vp.2022.22956","DOIUrl":"https://doi.org/10.21595/vp.2022.22956","url":null,"abstract":"Based on the shield tunnel construction of the left line of Guowei road station-Qingshan lake west station of Nanchang metro line 3, the study focuses on the adverse effects of tunnel segment convergence and settlement deformation of vault and arch bottom on shield construction in the process of shield tunnel construction in water-rich complex stratum. The time-space curves of segment convergence and settlement value on typical monitoring sections are drawn, their variation laws are analyzed, and the deformation values of monitoring data are analyzed and tested. Based on the analysis results, the qualitative and quantitative evaluation of the overall or local deformation state of each monitoring object of tunnel segment is carried out. The results show that the cumulative deformation of each typical monitoring section is lower than the warning value, and the tunnel segment has a systematic offset in the horizontal and vertical directions of the clearance.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134454520","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
Health diagnosis of marine engine room equipment based on BP and D-S evidence theory 基于BP和D-S证据理论的船舶机舱设备健康诊断
59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022 Pub Date : 2022-10-22 DOI: 10.21595/vp.2022.22896
Yuhang Jiang, Zhimin Wang, Yi Zhang, Ning Chen
{"title":"Health diagnosis of marine engine room equipment based on BP and D-S evidence theory","authors":"Yuhang Jiang, Zhimin Wang, Yi Zhang, Ning Chen","doi":"10.21595/vp.2022.22896","DOIUrl":"https://doi.org/10.21595/vp.2022.22896","url":null,"abstract":"Aiming at the problems of poor resolution and low precision in traditional health diagnosis of Marine engine room equipment, this paper proposes a health diagnosis method of intelligent Marine engine room equipment based on BP neural network and D-S evidence theory. Firstly, the time-domain parameters of the obtained acceleration signal are extracted and the energy in frequency domain after wavelet decomposition is calculated. Then the eigenvectors of time domain and wavelet packet energy were constructed respectively, and the normalized processing was input into two BP neural networks to obtain the classification results. Finally, the fault classification results in time domain and frequency domain are combined with the D-S evidence theory and output diagnosis. Through experimental analysis and verification of rolling bearing data from electrical Engineering Laboratory of Case Western Reserve University, the accuracy of the proposed method is better than that of time domain and frequency domain analysis alone, which improves the accuracy and reliability of fault classification.","PeriodicalId":221830,"journal":{"name":"59th International Conference on Vibroengineering in Dubai, United Arab Emirates, October 22, 2022","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134171573","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
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