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Gong Cheng Li Xue/Engineering Mechanics最新文献

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On the effect of friction in testing of small-scale concrete cylinders 小尺寸混凝土圆柱体试验中摩擦力的影响
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-239
M. Středulová, J. Eliáš
{"title":"On the effect of friction in testing of small-scale concrete cylinders","authors":"M. Středulová, J. Eliáš","doi":"10.21495/em2023-239","DOIUrl":"https://doi.org/10.21495/em2023-239","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45815287","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
Calibrated finite volume method-based simulation framework for laser shock peening 基于标定有限体积法的激光冲击强化仿真框架
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-103
M. Isoz, P. Gruber, J. Schmidt, L. Kubíčková, J. Stefan, J. Kaufman, J. Brajer, D. Gabriel
{"title":"Calibrated finite volume method-based simulation framework for laser shock peening","authors":"M. Isoz, P. Gruber, J. Schmidt, L. Kubíčková, J. Stefan, J. Kaufman, J. Brajer, D. Gabriel","doi":"10.21495/em2023-103","DOIUrl":"https://doi.org/10.21495/em2023-103","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48159775","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
The effect of various positions of the straight fin heat sink on the electrical schwitchboard cooling 直翅片散热器不同位置对配电板冷却的影响
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-167
J. Musil, P. Procházka, V. Uruba
{"title":"The effect of various positions of the straight fin heat sink on the electrical schwitchboard cooling","authors":"J. Musil, P. Procházka, V. Uruba","doi":"10.21495/em2023-167","DOIUrl":"https://doi.org/10.21495/em2023-167","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45252193","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
Investigation of the vortex-induced vibration by convolution neural network 涡激振动的卷积神经网络研究
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-47
O. Bublík, V. Heidler, A. Pecka, J. Vimmr
{"title":"Investigation of the vortex-induced vibration by convolution neural network","authors":"O. Bublík, V. Heidler, A. Pecka, J. Vimmr","doi":"10.21495/em2023-47","DOIUrl":"https://doi.org/10.21495/em2023-47","url":null,"abstract":": The focus of this paper is to use a convolutional neural network to predict the unsteady laminar flow field in 2D domains, specifically as it relates to vortex induced vibration. In this scenario, an incompressible fluid is flowing around a cylinder, creating a vortex street that leads to oscillation of the cylinder. The movement of the cylinder, which has only one degree of freedom, is modeled using a linear spring-mass-damper equation. The research examines the cylinder’s amplitude response for different spring stiffnesses and damping coefficients, and compares the results to those obtained from FSI computational fluid","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43093503","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
Mechanical concept of aeroelastic demonstrator and methodology for experimental investigation of propeller aerodynamic derivatives 气动弹性演示器的力学概念和螺旋桨气动导数实验研究方法
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-55
J. Cecrdle
{"title":"Mechanical concept of aeroelastic demonstrator and methodology for experimental investigation of propeller aerodynamic derivatives","authors":"J. Cecrdle","doi":"10.21495/em2023-55","DOIUrl":"https://doi.org/10.21495/em2023-55","url":null,"abstract":": Whirl flutter is a specific type of flutter instability, for which the experimental validation of the analytical results is required. One of the key issues is the solution of propeller aerodynamic forces on a vibrating propeller. To determine propeller forces and moments, aerodynamic derivatives are used. The complete solution includes six independent derivatives, four of which may be investigated experimentally. The subjected demonstrator represents a sting-mounted nacelle with a motor and propeller. It includes engine pitch and yaw degrees-of-freedom. Both stiffness constants are adjustable and both pivots are movable in the direction of the propeller axis. For the measurement, a single degree-of-freedom model is to be used; therefore, the blocking of either pitch or yaw movement is provided. Pitching moment (c m  ) and vertical force (c z  ) due to the pitch angle derivatives will be measured using pitch-only model arrangement. Pitching moment (c m  ) and vertical force (c z  ) due to the yaw angle derivatives will be measured using yaw-only model arrangement. Measurement includes pitch and yaw angles and pitch or yaw pivot moment, respectively. To separate the contributions of both force and moment to the total moment, the measurement of two configurations varying the distance between the gimbal axis and the propeller plane is used.","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48752869","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
Anisotropy of soft biological tissues and its consideration in constitutive models of arteries 软生物组织的各向异性及其在动脉本构模型中的考虑
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-17
J. Burša, A. Hrubanová, P. Skacel, J. Fischer, M. Turčanová, O. Lisický
{"title":"Anisotropy of soft biological tissues and its consideration in constitutive models of arteries","authors":"J. Burša, A. Hrubanová, P. Skacel, J. Fischer, M. Turčanová, O. Lisický","doi":"10.21495/em2023-17","DOIUrl":"https://doi.org/10.21495/em2023-17","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47842291","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
Dynamics of a cantilever beam with piezoelectric sensor: Experimental study 带有压电传感器的悬臂梁动力学:实验研究
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-119
R. Kolman, J. Kylar, V. Kotek, R. Cimrman, L. Musil
{"title":"Dynamics of a cantilever beam with piezoelectric sensor: Experimental study","authors":"R. Kolman, J. Kylar, V. Kotek, R. Cimrman, L. Musil","doi":"10.21495/em2023-119","DOIUrl":"https://doi.org/10.21495/em2023-119","url":null,"abstract":": Online and real-time sensing and monitoring of the health state of complex structures, such as aircraft and critical parts of power stations, is an essential part of the research in dynamics. Several types of sensors are used for sensing dynamic responses and monitoring response changes during the operation of critical parts of complex systems. The piezoelectric (PZ) materials belong to one group of electroactive materials, which transform mechanical deformation into an electrical response. For example, PZ ceramics or PVDF foils are employed for online sensing of the time history of mechanical deformation. Experimentally obtained response of a cantilever beam structure with a glued PZ sensor is the case of interest in this contribution. During the transient problem of the beam loaded by suddenly interrupted load due to the weight of a mass at the end of the beam, the time history of normal velocity at a point on the beam surface has been measured by a laser vibrometer and parallely, the output voltage on the PZ sensor has been measured by an electric device. The experimental data in the case of the first eigen-frequency is in good agreement with the value given by the formulae from the theoretical modeling of free vibration of a linear beam.","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48318445","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
Modal characteristic optimization of the blade of the test rig 试验台叶片模态特性优化
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-163
O. Medůna, V. Vomáčko, M. Pustka, A. Prošek
{"title":"Modal characteristic optimization of the blade of the test rig","authors":"O. Medůna, V. Vomáčko, M. Pustka, A. Prošek","doi":"10.21495/em2023-163","DOIUrl":"https://doi.org/10.21495/em2023-163","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45155210","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
Estimation of porosity of cement composites from electrical properties and general effective media model 从电学性质和通用有效介质模型估算水泥复合材料的孔隙率
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-95
J. Chalupová, J. Němeček, V. Hybášek
{"title":"Estimation of porosity of cement composites from electrical properties and general effective media model","authors":"J. Chalupová, J. Němeček, V. Hybášek","doi":"10.21495/em2023-95","DOIUrl":"https://doi.org/10.21495/em2023-95","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43696480","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
Computer simulation study of the stability of underactuated bipedal robot models (motivated by Griffin and Grizzle, 2017) 欠驱动两足机器人模型稳定性的计算机模拟研究（Griffin和Grizzle，2017）
Gong Cheng Li Xue/Engineering Mechanics Pub Date : 2023-05-11 DOI: 10.21495/em2023-207
P. Polach, M. Anderle, P. Zezula, Š. Papáček
{"title":"Computer simulation study of the stability of underactuated bipedal robot models (motivated by Griffin and Grizzle, 2017)","authors":"P. Polach, M. Anderle, P. Zezula, Š. Papáček","doi":"10.21495/em2023-207","DOIUrl":"https://doi.org/10.21495/em2023-207","url":null,"abstract":"","PeriodicalId":38731,"journal":{"name":"Gong Cheng Li Xue/Engineering Mechanics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48784833","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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