Journal of Mechanics最新文献_第8页

Penalty coupling of trimmed isogeometric Kirchhoff–Love shell patches 裁剪等几何Kirchhoff-Love壳块的惩罚耦合

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac008

D. Proserpio, J. Kiendl

引用次数: 4

Optical manipulation of optical vortex beam on gold nanoparticle 光涡旋光束对金纳米粒子的光学操纵

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac047

J. Liaw, Bing-Xian Chen, Yun-Cheng Ku, Chun-Yi Yang, Chun-Wei Lin, M. Kuo

引用次数: 1

Vibration of two in-plane simply supported bending cables interconnected by a flexible cross-link 用柔性交联连接的平面内简支弯曲电缆的振动

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac026

Chung-Yue Wang, V. S. Nguyen, M. I. Syamsi, Hao-Lin Wang

{"title":"Vibration of two in-plane simply supported bending cables interconnected by a flexible cross-link","authors":"Chung-Yue Wang, V. S. Nguyen, M. I. Syamsi, Hao-Lin Wang","doi":"10.1093/jom/ufac026","DOIUrl":"https://doi.org/10.1093/jom/ufac026","url":null,"abstract":"Most of the existing analytical solutions to the vibration of cable networks interconnected by cross-ties are developed based on string theory, where the effect of cable bending rigidity on cable vibration is ignored. However, the bending rigidity of cables strongly influences the natural frequencies and vibration mode shapes of short and stout cables and long cables at higher modes. Hence, this paper considers cable bending rigidity to form a closed-form solution that can be used in determining the natural frequencies and mode shapes of cable networks. The analytical solution of the cable network model with hinged-end boundary conditions is derived. It can be combined with other existing techniques to analyze the dynamic behaviors of a two-cable network with partly fixed supports. The analytical solution derived from this paper can be degenerated to the same solution without considering the cable bending rigidity in previous studies. The accuracy of this analytical solution considering cable bending rigidity is verified by finite element analysis. The effects of bending rigidity on the vibration frequencies and modes of the cable network with inclined and flexible cross-link are investigated in detail. This analytical solution can be applied to backward analysis to identify the cable tension of a two-cable network with partly fixed supports.","PeriodicalId":50136,"journal":{"name":"Journal of Mechanics","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61540388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Study on supercritical methane flow and heat transfer performance in a 180-degree curved duct 180度弯曲管道内超临界甲烷流动及换热性能研究

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac027

Changliang Han, Jingying Duan, Sibei Yin, Xibing Li

{"title":"Study on supercritical methane flow and heat transfer performance in a 180-degree curved duct","authors":"Changliang Han, Jingying Duan, Sibei Yin, Xibing Li","doi":"10.1093/jom/ufac027","DOIUrl":"https://doi.org/10.1093/jom/ufac027","url":null,"abstract":"In this paper, an investigation into flow and heat transfer performance of supercritical methane (S-CH4) in a 180-degree curved circular duct has been numerically carried out. The mathematical description of energy equation induced by the Dean vortices under the Cartesian-coordinate is first deduced. After validating the dynamic computational fluid dynamics model and method against the public experimental data, the effect of mass flux on the thermodynamics properties of S-CH4 is revealed. The calculation results show that due to the centrifugal force, the low temperature of S-CH4 gathers near the outer wall generatrix. Meanwhile, owing to the existence of multiple Dean vortices, all thermophysical parameters on the 90° cross-section are symmetrically concave along the vertical axis. The core position of multiple Dean vortices inside the curved duct is closer to the inner wall generatrix, which makes the velocity fluctuation greater. The maximum value of circumferential heat transfer coefficient on different cross-sections differs, and the non-uniform flow development process occurs inside the curved duct. Compared to the straight duct, when the mass fluxes are respectively 300 kg/m2 · s and 600 kg/m2 · s, the magnitude of increase in heat transfer coefficient of curved duct presents 18.8% and 23.5%. In addition, the forced convection caused by the secondary flow inside curved duct is so strong that the natural convection by the gravity could be neglected. The research outcome is of vital importance for the optimization design of liquefied natural gas vaporizer.","PeriodicalId":50136,"journal":{"name":"Journal of Mechanics","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61540392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stress analysis of an inclusion layer bonded to an irregularly shaped pore under an edge dislocation or a concentrated load 边缘位错或集中载荷作用下与不规则孔结合的夹杂物层应力分析

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac028

Y. Liao, S. Tseng, C. Chao

引用次数: 1

Support motion of a finite bar with a viscously damped boundary 具有粘性阻尼边界的有限杆的支承运动

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac035

Jeng-Tzong Chen, Hao-Chen Kao, Jia-Wei Lee, Ying-Te Lee

引用次数: 0

The field of applied mechanics: historical outlook from past to present and its implications for future applications 应用力学领域:从过去到现在的历史展望及其对未来应用的启示

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac042

Chih-Kung Lee

引用次数: 0

Miscible fluids mixing via alternating injection in a radial Hele-Shaw cell: experimental and numerical studies 在径向Hele-Shaw槽中通过交替注射混合混相流体:实验和数值研究

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac043

C. Chou, Avdhesh Kumar, Po-Chun Lu, Ching-Yao Chen

引用次数: 1

Quadrilateral layout generation and optimization using equivalence classes of integral curves: theory and application to surfaces with boundaries 利用积分曲线的等价类生成和优化四边形布局:有边界曲面的理论和应用

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac002

Kendrick M. Shepherd, X. Gu, R. Hiemstra, T. Hughes

{"title":"Quadrilateral layout generation and optimization using equivalence classes of integral curves: theory and application to surfaces with boundaries","authors":"Kendrick M. Shepherd, X. Gu, R. Hiemstra, T. Hughes","doi":"10.1093/jom/ufac002","DOIUrl":"https://doi.org/10.1093/jom/ufac002","url":null,"abstract":"Extracting quadrilateral layouts from surface triangulations is an important step in texture mapping, semi-structured quadrilateral meshing for traditional analysis and spline reconstruction for isogeometric analysis. Current methods struggle to yield high-quality layouts with appropriate connectivity between singular nodes (known as “extraordinary points” for spline representations) without resorting to either mixed-integer optimization or manual constraint prescription. The first of these is computationally expensive and comes with no guarantees, while the second is laborious and error-prone. In this work, we rigorously characterize curves in a quadrilateral layout up to homotopy type and use this information to quickly define high-quality connectivity constraints between singular nodes. The mathematical theory is accompanied by appropriate computational algorithms. The efficacy of the proposed method is demonstrated in generating quadrilateral layouts on the United States Army’s DEVCOM Generic Hull vehicle and parts of a bilinear quadrilateral finite element mesh (with some linear triangles) of a 1996 Dodge Neon.","PeriodicalId":50136,"journal":{"name":"Journal of Mechanics","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61539131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Dynamic response of slender body passing through ice and water mixture at high velocity 细长体高速通过冰与水混合物的动力响应

IF 1.7 4区工程技术

Journal of Mechanics Pub Date : 2022-01-01 DOI: 10.1093/jom/ufac016

Enling Tang, Zhen Zhang, Chuang Chen, Yafei Han, Mengzhou Chang, K. Guo, Liping He

{"title":"Dynamic response of slender body passing through ice and water mixture at high velocity","authors":"Enling Tang, Zhen Zhang, Chuang Chen, Yafei Han, Mengzhou Chang, K. Guo, Liping He","doi":"10.1093/jom/ufac016","DOIUrl":"https://doi.org/10.1093/jom/ufac016","url":null,"abstract":"In the process of underwater motion, the trajectory of the projectile will be greatly disturbed due to the complicated underwater environment and cavitation effect. In order to study the effect of the ice water mixture on projectile motion, the experiments of a titanium alloy slender body with a truncated conical and plat warhead passing through ice and water mixture have been performed by using a one-stage light gas gun loading system, an overpressure sensor measurement system and a high-speed camera acquisition system in this paper. The experimental results show that the volume of the cavity generated by the slender body with a small length-to-diameter ratio is larger, and the slender body deflects in the process of movement. For a slender body with a large length-to-diameter ratio, the cavity formed is closer to the central axis and the maximum radial size of the cavity. No matter the warhead shapes are truncated conical or plat warhead, the diameter and lasting time of the cavity increase with the increase of the slender body's velocities. Under the condition that the length-to-diameter ratio and the velocity of the slender bodies are similar, the overall evolutionary trend of the overpressure generated by two kinds of slender bodies is similar. But the fluctuation range of the overpressure amplitude of the plat warhead is small, the curve oscillation amplitude of the adjacent time is large and the peak value of the overpressure for the truncated conical warhead is large. Under the same ratio of length to diameter, the velocity has no obvious influence on the trajectory of the slender body after hitting the ice particles. When the slender body collides with ice particles, the deflection angle of its trajectory is larger than that of impacting on the edge of ice particles. When the slender body collides with the ice particles, the interaction between the ice particles and the slender body is large, and the deflection angle of the slender body is larger after impact.","PeriodicalId":50136,"journal":{"name":"Journal of Mechanics","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61539775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0