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Experimental modal analysis implementation in the assessment of the large-size objects dynamic state 实验模态分析实现了对大尺寸物体动态状态的评估
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-181
T. Kałaczyński, M. Łukasiewicz, M. Liss
{"title":"Experimental modal analysis implementation in the assessment of the large-size objects dynamic state","authors":"T. Kałaczyński, M. Łukasiewicz, M. Liss","doi":"10.21495/51-2-181","DOIUrl":"https://doi.org/10.21495/51-2-181","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68705268","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
Localized formulation of bipenalty method in contact-impact problems 接触碰撞问题双罚法的局部化表述
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-201
R. Kolman, J. González, R. Dvořák, J. Kopačka, K. Park
{"title":"Localized formulation of bipenalty method in contact-impact problems","authors":"R. Kolman, J. González, R. Dvořák, J. Kopačka, K. Park","doi":"10.21495/51-2-201","DOIUrl":"https://doi.org/10.21495/51-2-201","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68705326","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
Theoretical analysis of selected trajectories inscribed by a ball freely rolling in a spherical cavity 球在球腔内自由滚动轨迹的理论分析
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-277
J. Náprstek, C. Fischer
{"title":"Theoretical analysis of selected trajectories inscribed by a ball freely rolling in a spherical cavity","authors":"J. Náprstek, C. Fischer","doi":"10.21495/51-2-277","DOIUrl":"https://doi.org/10.21495/51-2-277","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"2608 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68706265","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
Modelling of acoustic streaming in porous media 多孔介质中声流模拟
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-333
E. Rohan, F. Moravcová
{"title":"Modelling of acoustic streaming in porous media","authors":"E. Rohan, F. Moravcová","doi":"10.21495/51-2-333","DOIUrl":"https://doi.org/10.21495/51-2-333","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68707198","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
Leveraging Python tensor contraction packages for evaluating finite element weak forms 利用Python张量收缩包来计算有限元弱形式
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-73
R. Cimrman
{"title":"Leveraging Python tensor contraction packages for evaluating finite element weak forms","authors":"R. Cimrman","doi":"10.21495/51-2-73","DOIUrl":"https://doi.org/10.21495/51-2-73","url":null,"abstract":": A new implementation of finite element matrix evaluation functions in the finite element code SfePy is introduced, leveraging several Python tensor contraction packages that implement a general function for evaluating expressions given using the Einstein summation convention. An example of the new weak form implementation is shown, and then results of a numerical study are presented comparing performance of the new implementation, the original implementation, and FEniCS suite.","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68707614","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
Patient anamnesis and its impact on mechanical properties of atherosclerotic carotid arteries: An explorative study 患者记忆及其对动脉粥样硬化性颈动脉力学特性的影响:一项探索性研究
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-157
Ing. Anna Hrubanová, PhD MUDr. Luboš Kubíček, Prof. Ing. Jiří Burša
{"title":"Patient anamnesis and its impact on mechanical properties of atherosclerotic carotid arteries: An explorative study","authors":"Ing. Anna Hrubanová, PhD MUDr. Luboš Kubíček, Prof. Ing. Jiří Burša","doi":"10.21495/51-2-157","DOIUrl":"https://doi.org/10.21495/51-2-157","url":null,"abstract":": Atherosclerosis is a life-threatening disease characterized by progressive lipoprotein accumulation in the inner artery layer. The beginning and the first stages of the disease are linked with endothelial layer disruption. Since there is previous evidence that lifestyle (including diet, unhealthy habits such as smoking or alcohol dinking) can influence the atherosclerotic process, their impact on the mechanical properties should be investigated as well. In this study, 141 uniaxial tests on carotid endarterectomy samples were performed, and statistical analysis was made to investigate the possible influence of these factors from anamnesis on the stress-strain characteristics. The factors found as important were smoking and alcohol drinking, since the stress-strain curve proved to be significantly different from the group without the influence of addictive substances. However, only separate factors were investigated, and further analysis should be made to reveal possible corelations between these factors.","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68705121","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
Friction coefficient value in joints in dependence on hialuronic acid concentration in lubricant 润滑油中透明质酸浓度对接头摩擦系数值的影响
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-121
M. Glowacki, A. Mazurkiewicz, O. Polishchuk, M. Matuszewski
{"title":"Friction coefficient value in joints in dependence on hialuronic acid concentration in lubricant","authors":"M. Glowacki, A. Mazurkiewicz, O. Polishchuk, M. Matuszewski","doi":"10.21495/51-2-121","DOIUrl":"https://doi.org/10.21495/51-2-121","url":null,"abstract":": The synovial joints are those parts of the body of humans and animals that enable its segments to move towards each other. The lubricant in the join is the synovial fluid, one of the main components of which is a natural biopolymer - hyaluronic acid. During the treatment of joint diseases, the aim is to reduce pain and reduce the resistance to movement arising as a result of increased friction in the joint. For this purpose, the preparation with hyaluronic acid (HA) is injected into the gap between the articular surfaces. Most often, HA is in the form of the sodium salt of the hyaluronic acid (HS). The concentration of HS in the preparations used in the treatment most often ranges from 1 to 3%. In our work, we investigated how the concentration of HS in the preparation reduces friction in the joint. The tests were performed for a friction pair: bovine articular cartilage - surgical stainless steel. Preparations with HS content from 1 to 2.5% were used as a lubricant for the tests. Based on the statistical analysis of the obtained results, it was found that lubrication with preparations with HS content up to 2% gives similar values of the friction coefficient. Its significant reduction was obtained for preparations with the concentration of HS 2% and higher.","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68704641","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
Efficient prediction of the plastic collapse of structures 结构塑性倒塌的有效预测
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-1
V. Stembera
{"title":"Efficient prediction of the plastic collapse of structures","authors":"V. Stembera","doi":"10.21495/51-2-1","DOIUrl":"https://doi.org/10.21495/51-2-1","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68703459","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 and experimental modal analysis of an induction electric motor 感应电动机的数值与实验模态分析
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-101
P. Ferfecki, M. Molčan, M. Nevrela, R. Palenik
{"title":"Numerical and experimental modal analysis of an induction electric motor","authors":"P. Ferfecki, M. Molčan, M. Nevrela, R. Palenik","doi":"10.21495/51-2-101","DOIUrl":"https://doi.org/10.21495/51-2-101","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68703481","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
Application of the finite element analysis as a new approach in pipe expansion joint engineering 有限元分析作为一种新方法在管道伸缩缝工程中的应用
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2022-01-01 DOI: 10.21495/51-2-173
K. Joszko, B. Gzik-Zroska, W. Wolański, M. Gzik, T. Tymkiewicz
{"title":"Application of the finite element analysis as a new approach in pipe expansion joint engineering","authors":"K. Joszko, B. Gzik-Zroska, W. Wolański, M. Gzik, T. Tymkiewicz","doi":"10.21495/51-2-173","DOIUrl":"https://doi.org/10.21495/51-2-173","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68705256","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
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