Pub Date : 2022-01-01DOI: 10.1504/ijhm.2022.127043
Chun-rong Liu, Wenyu Yang
{"title":"Theoretical analysis and numerical study on a flexible piezoelectric wave energy converter","authors":"Chun-rong Liu, Wenyu Yang","doi":"10.1504/ijhm.2022.127043","DOIUrl":"https://doi.org/10.1504/ijhm.2022.127043","url":null,"abstract":"","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66895101","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}
Pub Date : 2022-01-01DOI: 10.1504/ijhm.2022.123131
Junye Li, Tuo Sui, Xiwei Dong, F. Gu, Ningning Su, Jianhe Liu, Chengyu Xu
{"title":"Large eddy simulation studies of two-phase flow characteristics in the abrasive flow machining of complex flow ways with a cross-section of cycloidal lobes","authors":"Junye Li, Tuo Sui, Xiwei Dong, F. Gu, Ningning Su, Jianhe Liu, Chengyu Xu","doi":"10.1504/ijhm.2022.123131","DOIUrl":"https://doi.org/10.1504/ijhm.2022.123131","url":null,"abstract":"","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66895237","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}
Pub Date : 2022-01-01DOI: 10.1504/ijhm.2022.10048784
Chao He, Ming Qiao, Jiachen Yu, Dezhi Zhu, Jianfeng Ya, H. Shang, Jiaqun Li
{"title":"Micro drilling of PMMA with double-pulse femtosecond laser","authors":"Chao He, Ming Qiao, Jiachen Yu, Dezhi Zhu, Jianfeng Ya, H. Shang, Jiaqun Li","doi":"10.1504/ijhm.2022.10048784","DOIUrl":"https://doi.org/10.1504/ijhm.2022.10048784","url":null,"abstract":"","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66894598","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}
Pub Date : 2022-01-01DOI: 10.1504/ijhm.2022.125092
D. Zhen, D. Li, Guojin Feng, Hao Zhang, F. Gu
{"title":"Rolling bearing fault diagnosis based on VMD reconstruction and DCS demodulation","authors":"D. Zhen, D. Li, Guojin Feng, Hao Zhang, F. Gu","doi":"10.1504/ijhm.2022.125092","DOIUrl":"https://doi.org/10.1504/ijhm.2022.125092","url":null,"abstract":"","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66895028","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}
Pub Date : 2021-08-06DOI: 10.1504/ijhm.2021.10040184
Rijul Singla, C. Anitescu, S. Singh, I. Singh, B. K. Mishra, T. Rabczuk, X. Zhuang
We aim to model fracture on pressure vessel surfaces so that its rupture can be avoided. It is well known that pressure vessels have wide-spread applications in almost all industries. They are often subjected to high pressures and extreme temperatures and in some typical applications they even carry highly flammable or hazardous substances. In the presence of cracks, the state of stress near the fracture zone becomes very high, due to the phenomenon of stress singularity at the crack tips. This greatly reduces the strength of the material and can lead to early failure. In this paper, the geometry of pressure vessels is discretised using splines which are used as the basis for isogeometric analysis (IGA). Initially, the stress analysis of thin pressure vessel is carried out in the absence of cracks by implementing IGA-based Kirchhoff-Love shell theory, and the results are compared with analytical or standard available solutions. The crack is assumed to cross the entire thickness and is introduced either in axial or circumferential direction.
{"title":"Modelling of fracture in pressure vessels by thin shell isogeometric analysis","authors":"Rijul Singla, C. Anitescu, S. Singh, I. Singh, B. K. Mishra, T. Rabczuk, X. Zhuang","doi":"10.1504/ijhm.2021.10040184","DOIUrl":"https://doi.org/10.1504/ijhm.2021.10040184","url":null,"abstract":"We aim to model fracture on pressure vessel surfaces so that its rupture can be avoided. It is well known that pressure vessels have wide-spread applications in almost all industries. They are often subjected to high pressures and extreme temperatures and in some typical applications they even carry highly flammable or hazardous substances. In the presence of cracks, the state of stress near the fracture zone becomes very high, due to the phenomenon of stress singularity at the crack tips. This greatly reduces the strength of the material and can lead to early failure. In this paper, the geometry of pressure vessels is discretised using splines which are used as the basis for isogeometric analysis (IGA). Initially, the stress analysis of thin pressure vessel is carried out in the absence of cracks by implementing IGA-based Kirchhoff-Love shell theory, and the results are compared with analytical or standard available solutions. The crack is assumed to cross the entire thickness and is introduced either in axial or circumferential direction.","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2021-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42556221","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}
In micromouse competitions, small autonomous robots move in a maze and turn into corners with steep angles at high speeds. However, the recent competition was marked by speeding up. Generally, driving performance is limited through only the motor current control braking. Therefore, in this study, we developed a mechanical brake device using electrorheological fluid (ER fluid). Around the robot's drive, this brake device is connected to the DC motor through gears, and when the robot decelerates, the decelerating time is shortened if the ER brake is used together with the electric DC motor brake, so the deceleration time before a corner is shortened. Thus, the movement time from start of the maze to the goal is also shortened. Aiming at improving the performance of small robots that participate in micromouse competitions, we reported the basic research, performance evaluation, and brake design of a small brake that uses ER fluid.
{"title":"Hydro-disk-type of electrorheological brakes for small mobile robots","authors":"Takanori Togawa, Takuma Tachibana, Yutaka Tanaka, Jinghui Peng","doi":"10.1504/ijhm.2021.10039229","DOIUrl":"https://doi.org/10.1504/ijhm.2021.10039229","url":null,"abstract":"In micromouse competitions, small autonomous robots move in a maze and turn into corners with steep angles at high speeds. However, the recent competition was marked by speeding up. Generally, driving performance is limited through only the motor current control braking. Therefore, in this study, we developed a mechanical brake device using electrorheological fluid (ER fluid). Around the robot's drive, this brake device is connected to the DC motor through gears, and when the robot decelerates, the decelerating time is shortened if the ER brake is used together with the electric DC motor brake, so the deceleration time before a corner is shortened. Thus, the movement time from start of the maze to the goal is also shortened. Aiming at improving the performance of small robots that participate in micromouse competitions, we reported the basic research, performance evaluation, and brake design of a small brake that uses ER fluid.","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2021-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45430322","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}
Pub Date : 2021-08-06DOI: 10.1504/ijhm.2021.10039230
Mohammad Hosein Fakhar, A. Fakhar, H. Tabatabaei
Herein, nanotechnology efficacy on the acute velocity of fluid of fluid-conveyed-nanocomposite pipes is studied. The polymeric pipe is armed by carbon nanotubes utilising Mori and Tanaka model. The dynamic force induced by fluid is calculated utilising perturbation method. Based on method of energy and Lagrange model as well as Mindlin theory, the final equations are obtained. Utilising semi-exact solution, the relations are solved in order to calculate the acute velocity of fluid so that the efficacy of pipes geometrical constants and CNT percentage are investigated on the acute velocity of fluid. The outcomes are compared with other papers for showing the accuracy of this solution. With adding the CNT percentage, the acute velocity of fluid is improved. Indeed, the heat generation has a harmful efficacy on the acute velocity of fluid since it can reduce the acute value due to reduction in the stiffness of pipe.
{"title":"Nanotechnology efficacy on improvement of acute velocity in fluid-conveyed pipes under thermal load","authors":"Mohammad Hosein Fakhar, A. Fakhar, H. Tabatabaei","doi":"10.1504/ijhm.2021.10039230","DOIUrl":"https://doi.org/10.1504/ijhm.2021.10039230","url":null,"abstract":"Herein, nanotechnology efficacy on the acute velocity of fluid of fluid-conveyed-nanocomposite pipes is studied. The polymeric pipe is armed by carbon nanotubes utilising Mori and Tanaka model. The dynamic force induced by fluid is calculated utilising perturbation method. Based on method of energy and Lagrange model as well as Mindlin theory, the final equations are obtained. Utilising semi-exact solution, the relations are solved in order to calculate the acute velocity of fluid so that the efficacy of pipes geometrical constants and CNT percentage are investigated on the acute velocity of fluid. The outcomes are compared with other papers for showing the accuracy of this solution. With adding the CNT percentage, the acute velocity of fluid is improved. Indeed, the heat generation has a harmful efficacy on the acute velocity of fluid since it can reduce the acute value due to reduction in the stiffness of pipe.","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2021-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44888278","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}
Pub Date : 2021-04-26DOI: 10.1504/ijhm.2021.10040340
Andrew Ball, F. Gu, D. Mondal, Guojin Feng
{"title":"Investigation of VMD denoising method based on Monte Carlo simulation: a comparative study between newly introduced autocorrelation-based method and\u0000PDF distance based method","authors":"Andrew Ball, F. Gu, D. Mondal, Guojin Feng","doi":"10.1504/ijhm.2021.10040340","DOIUrl":"https://doi.org/10.1504/ijhm.2021.10040340","url":null,"abstract":"","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":" ","pages":""},"PeriodicalIF":5.1,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44705800","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}
Pub Date : 2021-01-01DOI: 10.1504/ijhm.2021.118009
J. Sinha, N. Sepulveda
{"title":"Theoretical validation of earlier developed experimental rotor faults diagnosis model","authors":"J. Sinha, N. Sepulveda","doi":"10.1504/ijhm.2021.118009","DOIUrl":"https://doi.org/10.1504/ijhm.2021.118009","url":null,"abstract":"","PeriodicalId":29937,"journal":{"name":"International Journal of Hydromechatronics","volume":"1 1","pages":""},"PeriodicalIF":5.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66893229","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}
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