Увійти

Готові списки джерел за темами / H-beam / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: H-beam.

Статті в журналах з теми "H-beam"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Ознайомтеся з топ-50 статей у журналах для дослідження на тему "H-beam".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Переглядайте статті в журналах для різних дисциплін та оформлюйте правильно вашу бібліографію.

1

Abraham, Er Nimmy, Er Gopika Moorthy, and Er Prashanth Krishnan. "Seismic Analysis of Concrete Filled Steel Tubular Column and H Steel Beam of Normal and Reduced Beam Sections." International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE) 9, no. 6 (2022): 37–40. http://dx.doi.org/10.36647/ijermce/09.06.a007.

Повний текст джерела

Анотація:

A beam-column junction is a structural member that is subjected to transverse bending and axial compression at the same time. H Steel beams are beams that are composed of an H-steel core within a precast concrete beam. Advantage of H steel beam is its high bearing capacity compared to RC columns. Concrete Filled Steel Tubular (CFST) structure consists of hollow steel tube filled with plain or reinforced concrete. They are lighter than RC columns and are safer and dependable in seismic regions. The study is to find the seismic analysis of developed joints between H steel beam and CFST column un

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Duan, Shaowei, Wenzhao Zhou, Xinglong Liu, Jian Yuan, and Zhifeng Wang. "Experimental Study on the Bending Behavior of Steel-Wood Composite Beams." Advances in Civil Engineering 2021 (June 26, 2021): 1–12. http://dx.doi.org/10.1155/2021/1315849.

Повний текст джерела

Анотація:

This paper proposes a steel-wood composite beam with H-shaped steel beam webs glued to the wood. As a new type of composite beam, it combines the advantages of low energy consumption of wood, high permeability, and less pollution and the advantages of light weight and high strength of steel, high degree of assembly, short construction period, and less construction waste generated. Carrying out research is of great significance to improve the mechanical properties of steel-wood composite beams and promote the development of steel-wood composite structures. In this paper, three hot-rolled H-beam

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Paul, A., S. Melanson, T. Junginger, and M. Dehnel. "Creating negative ion beams from neutral gases using a negative hydrogen ion source." Journal of Instrumentation 19, no. 05 (2024): C05053. http://dx.doi.org/10.1088/1748-0221/19/05/c05053.

Повний текст джерела

Анотація:

Abstract A typical method to produce negative ion beams uses alkali vapour as a medium for a double charge exchange to convert incident positive (1+) beams to negative (1-) beams. Alkali vapours pose a problem in ion production as they are flammable, explosive and cause vacuum surface contamination. Thus, it is advantageous to use non-metallic vapours for charge exchange as it will prevent hazards and the contamination of vacuum surfaces and targets in which the negative ion beams are incident upon. In this paper we will describe and demonstrate the process of creating negative ion beams by im

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Cui 崔, Bujian 步坚, Shixiang 士香 Peng 彭, Jianbin 建斌 Zhu 朱, Yicheng 宜承 Dong 董, Zhiyu 之虞 Guo 郭, and Jiaer 佳洱 Chen 陈. "New progress on DC H 2 + beam generation: Tens of mA output and 70% fraction from a 2.45 GHz microwave driven ion source." Chinese Physics B 34, no. 8 (2025): 085203. https://doi.org/10.1088/1674-1056/adf1ec.

Повний текст джерела

Анотація:

Abstract Recently H 2 + ion beam finds widespread use in many fields, and the demand of high-current H 2 + ion sources is urgent for numerous applications. However, there are currently almost no reported ion sources capable of generating a direct-current (DC) H 2 + beam with tens of mA current. In previous work at Peking University (PKU), H 2 + ion beams with a current of over 40 mA have been obtained in pulse mode, and a current of 16 mA was achieved in DC mode. In this paper, we report the generation of a DC H 2 + ion beam with a current of 22 mA extracted from an improved miniaturized micro

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Shi, Wen Long, and Xuan Liu. "Application on H-Beam with Trapezoidally Corrugated Webs." Applied Mechanics and Materials 94-96 (September 2011): 342–49. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.342.

Повний текст джерела

Анотація:

The H-beam with corrugated webs is a new type of H-beam, whose webs are produced by substituting corrugated webs for flat webs. In this paper, analysis was conducted to study main design principles for H-beam with corrugated webs used in a project, including component design and joints design. Compared with H-beams, the products have superior load-carrying capacity and more favorable economic advantages.

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Batygin, Y. K., J. Barraza, K. A. Bishofberger, et al. "Novel multi-beam front end for LANSCE accelerator facility." Journal of Physics: Conference Series 2687, no. 5 (2024): 052006. http://dx.doi.org/10.1088/1742-6596/2687/5/052006.

Повний текст джерела

Анотація:

Abstract The LANSCE accelerator facility has been in operation for 50 years performing important scientific support for national security. The unique feature of the LANSCE accelerator facility is multi-beam operation, delivering beams to five experimental areas. To reduce long-term operational risks and to realize future beam performance goals in support of the laboratory missions, we are developing a novel high-brightness Front End injector. The proposed injector includes two independent low-energy transports for H+ and H- beams merging beams at the entrance of a single RFQ. These beamlines a

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Wada, M., T. Shibata, and K. Shinto. "Effect due to Cs injection upon current oscillation of the beam extracted from the J-PARC negative hydrogen ion source." Journal of Instrumentation 19, no. 02 (2024): C02019. http://dx.doi.org/10.1088/1748-0221/19/02/c02019.

Повний текст джерела

Анотація:

Abstract A high-speed emittance measurement system installed at the J-PARC RF negative hydrogen (H-) ion source test stand can construct emittance diagrams of the beam of a specific frequency component. The driving 2 MHz RF power produces small amplitude oscillating components at 2 MHz and at higher harmonic frequencies in the total H- ion beam detected by a Faraday installed downstream of the emittance measurement system. Magnitudes of oscillating component at 2 MHz and 4 MHz frequencies become appreciable as the slits of the emittance measurement system separate the H- ion beam into the posi

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Yoshizawa, Katsuhito, and Kikuo Ikarashi. "Elastic Local Buckling Strength of Tapered H-Shaped Cantilever Beams." Applied Mechanics and Materials 166-169 (May 2012): 1033–39. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1033.

Повний текст джерела

Анотація:

The purpose of this paper is to investigate the elastic local buckling strength and the behavior of tapered H-shaped beams under stress condition of cantilever beam. The analyses were conducted by separating H-shaped beam into two plate elements (web and flanges). From the results of analyses, authors evaluate elastic local buckling strength of each plate element, and clarify the several effects of tapered shape by comparing buckling strength and the behavior of tapered H-shaped beam with uniform H-shaped beam. In addition, authors examine coupled buckling of the two plate elements and confirm

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Al-Thabhawee, Hayder Wafi. "EXPERIMANTAL STUDY OF EFFECT OF HEXAGONAL HOLES DIMENSIONS ON ULTIMATE STRENGTH OF CASTELLATED STEEL BEAM." Kufa Journal of Engineering 8, no. 1 (2017): 97–107. http://dx.doi.org/10.30572/2018/kje/811186.

Повний текст джерела

Анотація:

Nowadays, use of castellated steel beams (CSBs) has become very common because of their advantageous implementations in construction of buildings. Castellated Steel Beams (CSBs) are those members that are fabricated from standard hot rolled steel (HRS) I- sections by cutting along its web in "zigzag" pattern and thereafter rejoining the two halves on one another by welding together to form a castellated beam, so that generally the depth of Â a section will be increased. This research analyses the experimental results of six specimens of castellated steel beams and compares with control beam (P

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Zhao, Xinyang, Yichao Li, Wenxiu Yang, et al. "FAST Drift Scan Survey for H i Intensity Mapping. II. Stacking-based Beam Construction of the 19-feed Array at 1.4 GHz." Astronomical Journal 169, no. 5 (2025): 265. https://doi.org/10.3847/1538-3881/adc2fd.

Повний текст джерела

Анотація:

Abstract Neutral hydrogen (H i) intensity mapping (IM) presents great promise for future cosmological large-scale structure surveys. However, a major challenge for H i IM cosmological studies is to accurately subtract the foreground contamination. An accurate beam model is crucial for improving the quality of foreground subtraction. In this work, we develop a stacking-based beam reconstruction method utilizing the radio continuum point sources within the drift-scan field. Based on the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we employ two sets of drift-scan survey data and

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Al-Saeedi, Saleem Mohammed Ali Ahmed, Linfeng Lu, Osama Zaid Yahya Al-Ansi, and Saddam Ali. "Hysteretic Behavior Study on the RBS Connection of H-Shape Columns with Middle-Flanges or Wide-Flange H-Shape Beams." Buildings 15, no. 1 (2025): 147. https://doi.org/10.3390/buildings15010147.

Повний текст джерела

Анотація:

Existing research on reduced beam section (RBS) connections in steel frames rarely addresses H-shaped beams with middle and wide flanges. Therefore, this study investigates the hysteretic behavior of RBS connections in H-shaped columns connected to H-shaped beams with middle and wide flanges. Using finite element analysis, the influence of key parameters (a, b, and c, where “a” represents the unweakened beam flange extension length, “b” represents the weakened beam flange length, and “c” represents the weakened beam flange depth, respectively) on structural performance was evaluated, focusing

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Yoshimoto, Masahiro, Kota Okabe, and Michikazu Kinsho. "Measurement of radioactivity and evaluation of activated nuclides due to secondary particles produced in stripper foil in J-PARC RCS." EPJ Web of Conferences 229 (2020): 01002. http://dx.doi.org/10.1051/epjconf/202022901002.

Повний текст джерела

Анотація:

Multi-turn charge-exchange beam injection is the key technique to achieve high-intensity proton beam accelerators. In J-PARC RCS, 400-MeV H- beams from LINAC are injected into stripper foils such that most of the beams are converted into protons. The stripper foils are irradiated not only with the injected H- beams but also with the protons circulating during the beam injection period. The high energy and intense beam irradiation into the foil generates secondary neutrons and protons via nuclear reactions. These secondary particles cause high residual activation around the stripper foils. Ther

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Ma, Jiaxing, Tao Wang, Yinhui Wang, and Kikuo Ikarashi. "Elastic Web Buckling Stress and Ultimate Strength of H-Section Beams Dominated by Web Buckling." Mathematical Problems in Engineering 2020 (August 19, 2020): 1–18. http://dx.doi.org/10.1155/2020/3097062.

Повний текст джерела

Анотація:

Numerical analyses and theoretic analyses are presented to study the elastic buckling of H-section beam web under combined bending and shear force. Results show that the buckling stress of a single web with clamped edges gives a good agreement with the buckling stress of an H-section beam web when the local buckling of the beam is dominated by the web buckling. Based on theoretic analyses, a parametric study is conducted to simplify the calculation of buckling coefficients. The parameters involved are clarified first, and the improved equations for the buckling coefficient and buckling stress

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Ma, Jin Hong, Xiao Han Yao, and Bin Tao. "Study on the Flange Spread of H-Beam." Advanced Materials Research 898 (February 2014): 213–16. http://dx.doi.org/10.4028/www.scientific.net/amr.898.213.

Повний текст джерела

Анотація:

According to the production data of a rolling H-beam factory, the FE model of hot continuous rolling process of H-beam is built. The rolling process of H-beams is simulated by explicit dynamic FEM, and the influence of deformation parameters on the spread of rolling piece is analyzed. The simulation results show that the flange width, elongation ratio between flange and web and flange thickness are the major influencing factors on the spread of rolling piece.

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Dai, Su Juan, and Yan Chun Meng. "Optimization Design of Section for Bisymmetric Built-Up Steel H-Shaped Beams." Applied Mechanics and Materials 405-408 (September 2013): 948–51. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.948.

Повний текст джерела

Анотація:

Built-up steel H-shaped beam with variable cross-section design can save steel and realize the economy requirements of structure.The existing design method of variable width of flange of steel beam is only applicable to beam under uniformly distributed load.This paper presents optimization design procedures of the Variable cross-section.The related formulas used to optimization design of section for bisymmetric built-up steel H-shaped beams under concentrated load were derived,and the position of varying cross section of beams under concentrated load was calculated ,it is convenient to be used

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Gemechu, Tigist Demssice, and Linfeng Lu. "Analysis of Factors Affecting the Seismic Performance of Widened Flange Connections in Mid-Flange H-Beams and Box Columns." Buildings 14, no. 10 (2024): 3170. http://dx.doi.org/10.3390/buildings14103170.

Повний текст джерела

Анотація:

Following the Northridge and Kobe earthquakes, research has increasingly focused on achieving high ductility in beam-to-column connections. This study investigates the seismic performance of connections featuring widened beam-end flanges in mid-flange H-beams and box columns, an area with limited prior research compared to I-section columns and narrow-flange H-beams. Detailed finite element modeling using ABAQUS 6.1.4 demonstrates that widened beam-end flanges significantly improve bending capacity and ductility by relocating the plastic hinge away from the connection, thereby enhancing seismi

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Sheng, Jie, Junwu Xia, and Hongfei Chang. "Bending Behavior of Corroded H-Shaped Steel Beam in Underground Environment." Applied Sciences 11, no. 3 (2021): 938. http://dx.doi.org/10.3390/app11030938.

Повний текст джерела

Анотація:

To investigate the residual bending strength of a corroded H-shaped steel beam in an underground coal mining environment, the law governing the degradation of the mechanical properties of corroded steel was first investigated through tensile testing. Subsequently, a four-point bending test was conducted on corroded H-shaped steel beams. The influence of the corrosion rate and sustained loading ratio on the residual bending performance of a corroded H-beam was investigated. The results reveal that the uniform corrosion and uneven corrosion of the steel occurred simultaneously. Additionally, pit

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Liu, Wen Ping, B. Zhang, Pei Qi Wang, and Qin He Zhang. "Impact Analysis of Microstructure Evolution in Hot Rolling of H-Beams." Advanced Materials Research 652-654 (January 2013): 2024–28. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.2024.

Повний текст джерела

Анотація:

To improve the product properties of H-beams, it is essential to understand the effects of hot rolling parameters on the microstructure evolution of the beams. For this purpose, a thermo mechanical model was built with the finite element Package ABAQUS. By re-meshing the model, multipass large-deformation hot rolling process was simulated under the boundary conditions predefined in accordance with the practical production. Based on the hot rolling simulation, an impact analysis of strain rate, initial rough rolling temperature, and time interval between passes on the microstructure evolution o

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Li, Yingjie, Ye Xu, Jin-Long Xu, et al. "H i Narrow-line Self-absorptions toward the High-mass Star-forming Region G176.51+00.20." Astrophysical Journal Letters 933, no. 2 (2022): L26. http://dx.doi.org/10.3847/2041-8213/ac7b7c.

Повний текст джерела

Анотація:

Abstract Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) 19-beam tracking observational mode, high-sensitivity and high-velocity-resolution H i spectral lines have been observed toward the high-mass star-forming region G176.51+00.20. This is a pilot study searching for H i narrow-line self-absorption (HINSA) toward high-mass star-forming regions where bipolar molecular outflows have been detected. This work is confined to the central seven beams of FAST. Two HINSA components are detected in all seven beams, which correspond to a strong CO emission region (SCER; with a ve

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Zang, Yong, Bo Zhang, Li Hong Cui, and Zhi Ying Gao. "The Analysis of Temperature Field and Residual Stress Distribution during H-Beam Cooling Process." Advanced Materials Research 194-196 (February 2011): 20–25. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.20.

Повний текст джерела

Анотація:

A spot-test of cooling after the finish-rolling was performed for the typical H-beam and the temperature field during the process and residual stress in the beams after the cooling were measured. By using finite element method, the cooling temperature-field of the H700×300 H-beam was simulated and the thermal stress distribution formed in this process was calculated by using thermo-mechanical coupling function. The simulation results matched well with the data obtained on the spot. The accurate description performed in this paper for the temperature field and residual stress distribution of H-

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Sherman, Joseph, M. Olivo, and E. Mariani. "H+ beam neutralization measurements at 870 keV beam energy." Review of Scientific Instruments 63, no. 4 (1992): 2776–78. http://dx.doi.org/10.1063/1.1142802.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Chen, Yong, and Chun Yu Zhang. "Elastave Bucking of Whole-Corrugate Web H-Beam." Advanced Materials Research 368-373 (October 2011): 23–27. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.23.

Повний текст джерела

Анотація:

Contradiction between thin wall and stability of H-beam is a kind of problem in engineering field, the corrugated web H-beam researched in this paper relieve the contradiction to some extent. This paper apply finite element method of variable section beam and high programming language of MATLAB to analyze buckling strength under axis pressure and effect of critical load of parameter of whole-corrugated web H-beam and contrast to constant cross section H-beam, declaration superiority of whole-corrugated web H-beam with example, supply theory to this kind of H-beam in engineering application.

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Wasilewski, Adam. "Effects of irradiating the beam dump with the main electron beam of the superconducting linear accelerator PolFEL." Nukleonika 70, no. 2 (2025): 43–49. https://doi.org/10.2478/nuka-2025-0005.

Повний текст джерела

Анотація:

Abstract The transport of both primary and secondary radiation in the beam dump was conducted using Monte Carlo analysis. The radiation leakage level through the shielding walls of the bunker of the superconducting, linear electron accelerator PolFEL during beam operation, as well as the radiation dose generated by radioactivity, and the activity level of the beam dump and soil after beam operation were examined. The analysis encompassed three main electron beams with energies of 72 MeV, 187 MeV, and 280 MeV, corresponding to the need to deposit in the beam dump 900.0 W, 935.1 W, and 1400.1 W

Стилі APA, Harvard, Vancouver, ISO та ін.

24

AL-Farttoosi, Hayder, Oday Abdulrazzaq, and Haleem Hussain. "Shear Behavior of Two-Layer Beams Made of Normal and Lightweight Concrete Layers." Basrah journal for engineering science 22, no. 1 (2022): 115–28. http://dx.doi.org/10.33971/bjes.22.1.14.

Повний текст джерела

Анотація:

This study investigates the shear strength behavior of two-layer reinforced concrete beams consisting of two different types of concrete. One of the layers made of lightweight concrete (LWC) and the other was normal weight concrete (NWC). A total of 16 shear deficient reinforced concrete beams were fabricated and cast with NWC, LWC, and two-layer beam of both material with different configuration. All the beams were tested under four-point loading after 28 days. The variables of the experimental program include the ratio of thickness of the lightweight concrete layer to the overall depth of be

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Qiu, R. Y., W. L. Huang, F. Li, et al. "Low intensity beam current measurement of the Associated Proton Beam Line at CSNS." Journal of Physics: Conference Series 2681, no. 1 (2024): 012001. http://dx.doi.org/10.1088/1742-6596/2681/1/012001.

Повний текст джерела

Анотація:

Abstract The Associated Proton beam Experiment Platform (APEP) beamline is the first proton irradiation facility to use naturally-stripped protons which come from H-beams interacting with the residual gas in the linac beampipe at CSNS. The stripped beam current, which is in the order of 0.1% of the original H-beam and approximately 10 μA, should be measured precisely to provide the proton number for irradiation experiments. Therefore, a low-intensity beam current measurement system was developed with considerations to eliminate the external interferences. An anti-interference design is adopted

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Zargarian, Mahsa, and Alireza Rahai. "Theoretical and Experimental Studies of Two-Span Reinforced Concrete Deep Beams and Comparisons with Strut-and-Tie Method." Advances in Civil Engineering 2021 (February 8, 2021): 1–16. http://dx.doi.org/10.1155/2021/8880067.

Повний текст джерела

Анотація:

Regarding the complicated behavior of continuous deep beams, a research program including three parts was conducted. First part: three continuous concrete deep beams with different shear span-to-depth ratios (a/h) were tested. The effects of varying a/h ratio on ultimate strength and failure modes were investigated. Second part: the nonlinear finite element (FE) analyses were performed to simulate the experimental specimens and 21 large-scale continuous deep beams. The main parameters investigated were a/h ratio from 0.33 to 2 and f c ′ considered 40 MPa, 60 MPa, and 80 MPa. Third part: the st

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Wang, Chih-Shiung, and Lin-Tsang Lee. "Modified and Simplified Sectional Flexibility of a Cracked Beam." Journal of Applied Mathematics 2012 (2012): 1–16. http://dx.doi.org/10.1155/2012/543828.

Повний текст джерела

Анотація:

This paper presents a new sectional flexibility factor to simulate the reduction of the stiffness of a single-edge open cracked beam. The structural model for crack of the beam is considered as a rotational spring which is related to the ratio of crack depth to the beam height,a/h. The mathematical model of this single-edge open crack beam is considered as an Euler-Bernoulli beam. The modified factor,f(a/h), derived in this paper is in good agreement with previous researchers' results for crack depth ratioa/hless than 0.5. The natural frequencies and corresponding mode shapes for lateral vibra

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Nitawaki, Masashi, and Daigo Ishii. "The plastic deformation capacity of the structural system for thin‐web steel beam reinforced with stiffener plates." ce/papers 6, no. 3-4 (2023): 1603–7. http://dx.doi.org/10.1002/cepa.2409.

Повний текст джерела

Анотація:

AbstractJapanese buildings are generally designed as moment‐resistant frames, and beam ends are required to have high bending strength and high plastic deformation capacity. With H‐shaped beams, the contribution of the web to the bending strength is small, so H‐shaped beams with thick flanges and thin webs are used to reduce the amount of steel required for construction. However, H‐shaped beams with thin webs are prone to local buckling at the ends of the beam, resulting in poor plastic deformation performance. The authors have developed a structural system of steel structures in which the end

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Hayashi, K., K. Hoshino, K. Miyamoto, A. Hatayama, and J. Lettry. "Numerical study of the plasma meniscus shape and beam optics in RF negative ion sources." Journal of Instrumentation 19, no. 04 (2024): C04031. http://dx.doi.org/10.1088/1748-0221/19/04/c04031.

Повний текст джерела

Анотація:

Abstract In order to extract intense ion beams with good beam optics from hydrogen negative ion sources, it is important to control the shape of the plasma meniscus (i.e. beam emission surface). Recently, it is suggested experimentally that the degradation of beam optics in the RF negative ion sources may be due to the fluctuation of the distance d eff between the meniscus and the extraction grid caused by the fluctuation of the plasma density np . The purpose of this study is to make clear the dependence of d eff on np in the presence of a large amount of surface produced H- ions in order to

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Chen, Dyi Cheng, and Cheng Fu Chen. "Use of Taguchi Method to Study a Robust Design for H-Sectioned Porous Beams during Rolling." Materials Science Forum 561-565 (October 2007): 1845–48. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.1845.

Повний текст джерела

Анотація:

Commercial DEFORMTM three-dimensional finite element (FE) code is employed to examine the plastic deformation behavior of porous beams at the roll gap during the H-sectioned rolling process. The simulations assume that the rolls are fully rigid and that the change in temperature induced in the beams during rolling can be ignored. The simulations systematically examine the respective effects of the arc radius of the H-section flange region of the upper and lower rolls, the friction factor between the beam and the rolls, the density of the porous beams and the radii of the upper and lower rolls

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Kai, Gong, Liu Linya, Xiang Jun, Yang Haiming, and Yu Cuiying. "Quantitative Evaluation for Reinforcement Effect of Auxiliary Steel Beams Based on Running Safety and Dynamic Response." Shock and Vibration 2021 (June 2, 2021): 1–16. http://dx.doi.org/10.1155/2021/6688926.

Повний текст джерела

Анотація:

Aiming at the existing heavy-haul railway, bridges hardly meet the transportation requirements. Based on the spatial vibration calculation model of the freight train–track–bridge (FTTB) system, the FTTB spatial vibration model under the condition of auxiliary steel beam reinforcement is established. Besides, according to the random analysis method of train derailment energy, coming up with an evaluation method of auxiliary steel beam reinforcement is based on safety and dynamic response, which is used to discuss the train safety and the change law of FTTB system vibration response. The results

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Zelenski, A. "Review of Polarized Ion Sources." International Journal of Modern Physics: Conference Series 40 (January 2016): 1660100. http://dx.doi.org/10.1142/s2010194516601009.

Повний текст джерела

Анотація:

Recent progress in polarized ion sources development is reviewed. New techniques for production of polarized H[Formula: see text] ion (proton), D[Formula: see text] (D[Formula: see text]) and 3He[Formula: see text] ion beams will be discussed. A novel polarization technique was successfully implemented for the upgrade of the RHIC polarized H[Formula: see text] ion source to higher intensity and polarization. In this technique, a proton beam inside the high magnetic field solenoid is produced by ionization of the atomic hydrogen beam (from an external source) in the He-gas ionizer cell. Polariz

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Zhao, Xian Ming, Fei Guo, Xin Gao, Wen Zhen Xia, Li Na Wang, and Di Wu. "Research on the out of Square of H-Beams." Materials Science Forum 749 (March 2013): 473–78. http://dx.doi.org/10.4028/www.scientific.net/msf.749.473.

Повний текст джерела

Анотація:

H-beam will inevitably produce temperature uneven in cooling process, causing the uneven deformation phenomenon in H-beam cross section, and therefore how to improve H-beam cooling distortion uniformity become a research priority of H-beam. In this paper, the deformation of H-beam was simulated in the cooling process by using finite element analysis software ANSYS, and the simulation results was compared with measured data. Uneven cooling rate between up and down groove of the H-beam caused the out of square. Uneven cooling rate for the R corner and web surface was simulated, the conclusion is

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Lashlem, A. A., Dzuraidah Abd Wahab, Shahrum Abdullah, and Che Hassan Che Haron. "Impact Performance of Low Carbon Steel Safety Beams for Car Doors." Applied Mechanics and Materials 165 (April 2012): 247–51. http://dx.doi.org/10.4028/www.scientific.net/amm.165.247.

Повний текст джерела

Анотація:

This paper presents impact behaviour and energy absorption response of car door safety beams. Low carbon steel of thickness 2.25 mm, designed into four different shapes of, tube-beam, I-beam and II-beam were used in this experiment to study the effect of impact load on the crash characteristic of the door beams in terms of load bearing and attenuation of energy. The tube-beam is the conventional beam commonly used in cars today. The reason propelling the investigation of other beams is to draw a parallel comparison with the conventional tube beam and possibly obtain an optimised design in term

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Zhao, Guan-Yuan, Li Zhu, Wei Liu, Jia-Cheng Zhao, and Jin-Xin Huo. "Numerical Study on the Effect of Interface Dynamic Damage of Steel‒Concrete Composite Beam Bridge Caused by High‒Frequency Impact Load." Buildings 13, no. 2 (2023): 545. http://dx.doi.org/10.3390/buildings13020545.

Повний текст джерела

Анотація:

The group studs arrangement is applied to prefabricated composite beams to significantly improve construction speed. However, contact vibration exists in the unconstrained interface area of the high-speed railway composite beam during the operation period, which degrades the connecting performance of the composite beam and adversely affects the overall structure. In this study, finite element simulations of the vibration of concrete slabs and steel beams in the unconstrained interface area were carried out to obtain finite element models with damage. The effects of vibration damage on the degr

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Taylor, Chuck, Heather Andrews, En-Chuan Huang, et al. "A Novel Method for H-Beam Energy Measurement with Doppler shifted Lyman Lines." Nuclear Science and Technology Open Research 3 (July 8, 2025): 31. https://doi.org/10.12688/nuclscitechnolopenres.17589.1.

Повний текст джерела

Анотація:

An accurate measurement of proton beam energy is required for a variety of research and practical applications. This work describes a new method for estimating the energy of H- ion beams using Doppler-shifted Lyman lines. Analyzing the deexcitation photons of ions during H- beam neutralization improve our understanding of the beam’s energy distribution. Our Neutralization Beam Energy Measurement (NBEM) approach uses well established techniques to measure these photons from excited neutrals. Photons with specific wavelengths can be used to determine particle speed through their measured doppler

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Kachouh, Nancy, Tamer El-Maaddawy, Hilal El-Hassan, and Bilal El-Ariss. "Numerical Modeling of Concrete Deep Beams Made with Recycled Aggregates and Steel Fibers." Buildings 12, no. 5 (2022): 529. http://dx.doi.org/10.3390/buildings12050529.

Повний текст джерела

Анотація:

A bilinear tensile softening law that can describe the post-cracking behavior of concrete made with RCAs and steel fibers was developed based on an inverse analysis of characterization test data. Numerical simulation models were developed for large-scale concrete deep beams. The tensile softening laws along with characterization test results were used as input data in the analysis. The numerical deep beam models were validated through a comparative analysis with published experimental results. A parametric study was conducted to investigate the effect of varying the shear span-to-depth (a/h) r

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Ma, Jin Hong, Bin Tao, and Xiao Han Yao. "H-Beam Miscrostructure with Residual Stress." Applied Mechanics and Materials 602-605 (August 2014): 264–67. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.264.

Повний текст джерела

Анотація:

Different i nternal microstructure of H –Beam has great influence on the mechanical properties. In order to improve the production technology and improve the mechanical properties of products, H-beam with a residual stress products and without residual stress products are selected and observed by metallographic experiment. The internal microstructure of productions with residual stress and without residual stress are analyzed . The residual stress influence on internal microstructure of H-beam is analyzed.

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Zhang, Xin, Shenlu Yu, Shuaike Feng, Dawei Fan, Fang Zhang, and Han Cao. "Study on the Bending Performance of Prefabricated H-Shaped Steel Beams with Different Bolt Hole Types." Buildings 14, no. 9 (2024): 2988. http://dx.doi.org/10.3390/buildings14092988.

Повний текст джерела

Анотація:

This paper investigates the structural performance of a new prefabricated H-shaped steel beam assembled using high-strength bolts under three-point bending. The study evaluates four bolt hole types in five layout schemes through experimental tests. The results show that specimens with standard round holes in both the H-shaped steel and connecting plates exhibited 11% to 30% higher flexural bearing capacity compared to other hole types. Additionally, ANSYS simulations closely matched the experimental results, with a 6% difference. The research results provide important references for the design

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Qian, Jian Qing, Ji Ping Chen, Bao Qiao Wu, and Jie Ca Wu. "Performance Analysis of Fire-Resistant H-Beam Steel." Advanced Materials Research 163-167 (December 2010): 2949–52. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2949.

Повний текст джерела

Анотація:

The fire-resistant hot-rolled H-beam steel is the newly developed structure material. The development situation of the fire-resistant H-beam steel is briefly introduced. The chemical composition, microstructure, room temperature and high temperature mechanical properties and weldability of several batches of the developed domestic fire-resistant hot-rolled H-beam steels are comprehensively analyzed. The results show that the newly developed hot-rolled fire-resistant H-beam steel has very high room temperature strength, certain high temperature strength, good welding performance, but the toughn

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Pekel, H., and E. F. Erdurcan. "Determination of natural frequencies of non‐uniform aluminum beams coated with functionally graded material." Materialwissenschaft und Werkstofftechnik 55, no. 2 (2024): 204–15. http://dx.doi.org/10.1002/mawe.202300102.

Повний текст джерела

Анотація:

AbstractThe present study comprises a numerical analysis used to find the dimensionless natural frequencies of non‐uniform aluminum beams coated with functionally graded material. The beams have variable width, and their variation is described by exponential and linear functions. While the coating material properties vary with a polynomial function, the lamination theory is used to calculate the overall properties of the functionally graded material coating. The beam is modeled as a modified Timoshenko beam and the gradual transition of the coating material properties as 25 layers of homogeneo

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Sheikh-Sobeh, Amena, Nancy Kachouh, and Tamer El-Maaddawy. "Numerical Analysis of Concrete Deep Beams Reinforced with Glass Fiber-Reinforced Polymer Bars." Buildings 13, no. 11 (2023): 2767. http://dx.doi.org/10.3390/buildings13112767.

Повний текст джерела

Анотація:

This research aimed to generate data through a verified numerical model. The data were subsequently used to introduce a simplified analytical expression for the prediction of the shear strength of concrete deep beams reinforced with glass fiber-reinforced polymer (GFRP) reinforcing bars. A three-dimensional (3D) numerical simulation model for a large-scale GFRP-reinforced concrete deep beam (300 × 1200 × 5000 mm) was developed and validated against published experimental data. A parametric study was then conducted to examine the effects of key variables on the behavior and shear strength of GF

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Urbain, X., J. Lecointre, F. Mezdari, K. A. Miller, and D. W. Savin. "Merged-beam study of mutual neutralization of H−and H+." Journal of Physics: Conference Series 388, no. 9 (2012): 092004. http://dx.doi.org/10.1088/1742-6596/388/9/092004.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Yoshino, Yuki, and Yoshihiro Kimura. "Rotational Stiffening Performance of Roof Folded Plates in Torsion Tests and the Stiffening Effect of Roof Folded Plates on the Lateral Buckling of H Beams in Steel Structures." Buildings 14, no. 4 (2024): 1158. http://dx.doi.org/10.3390/buildings14041158.

Повний текст джерела

Анотація:

Non-structural members, such as roofs and ceilings, become affixed to main beams that are known as structural members. When such main beams experience bending or compressive forces that lead to lateral buckling, non-structural members may act to restrain the resulting lateral buckling deformation. Nevertheless, neither Japanese nor European guidelines advocate for the utilization of non-structural members as lateral buckling stiffeners for beams. Additionally, local buckling ensues near the bolt apertures in the beam–roof folded plate connection due to the torsional deformation induced by the

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Liu, Xuan, Jin Man Yan, and Ren Wei Hu. "Situation and Prospect of H-beam with Corrugated Web." Advanced Materials Research 671-674 (March 2013): 559–64. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.559.

Повний текст джерела

Анотація:

The H-beam with corrugated web is a new type of H-beam, whose web is produced by substituting corrugated web for flat web. This paper reviews the research status on mechanical properties of H-beam with corrugated web at home and abroad recently, and its bearing capacity calculation method is summarized. Finally, the future development of H-beam with corrugated web is prospected. As can be seen by comparing, there is much more room for the new field of research.

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Aboudarham, J., and J. C. Henoux. "Electron Beam as Origin of White-Light Solar Flares." International Astronomical Union Colloquium 104, no. 1 (1989): 19–30. http://dx.doi.org/10.1017/s025292110003178x.

Повний текст джерела

Анотація:

AbstractWe study the effect of chromospheric bombardment by an electron beam during solar flares. Using a semi-empirical flare model, we investigate energy balance at temperature minimum level and in the upper photosphere. We show that non-thermal hydrogen ionization (i.e., due to the electrons of the beam) leads to an increase of chromospheric hydrogen continuum emission, H− population, and absorption of photo-spheric and chromospheric continuum radiation. So, the upper photosphere is radiatively heated by chromospheric continuum radiation produced by the beam. The effect of hydrogen ionizati

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Kim, H. S., and S. S. Sheinin. "On interpreting weak beam images of microtwins." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 132–33. http://dx.doi.org/10.1017/s0424820100163125.

Повний текст джерела

Анотація:

The concept of a dynamically coupled set is of fundamental importance in carrying out theoretical calculations of image contrast of microtwins. Up to the present, considerations based on the dynamical theory have indicated that the diffracted beams taken into account in a particular calculation of image contrast must always reside in the same dynamically coupled set. The work presented in this paper indicates that for weak beam images this may not the case. The reason for this can be seen from Fig.1b in which g, h and (i), (j) are reciprocal lattice vectors and branches of the dispersion surfa

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Yu, Xiao Guang, Xu Hao, and Rui Miao. "Numerical Simulation Analysis of H-Beam Steel Controlled Cooling." Applied Mechanics and Materials 395-396 (September 2013): 1184–89. http://dx.doi.org/10.4028/www.scientific.net/amm.395-396.1184.

Повний текст джерела

Анотація:

The finite element analysis software soft ANSYS is used for researching H-beam hot rolling finite element model, temperature field and stress strain field. Then find the changes law in different water cooling conditions of the temperature field temperature distribution and the stress strain field. Find the heat coefficient of H-beam by using the optimization analysis to reduce the differences of the temperature and the stress strain value, and also reduce the deformation in H-beam cooling process. The controlled cooling parameters of H-beam under optimal conditions are determined by the simula

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Ohmi, Kazuhito. "Study of coherent beam–beam instability in CEPC-H and Z." International Journal of Modern Physics A 32, no. 34 (2017): 1746007. http://dx.doi.org/10.1142/s0217751x17460071.

Повний текст джерела

Анотація:

Design work using beam–beam simulation has been done since starting the CEPC and Future Circular Collider (FCC) proposals. In recent [Formula: see text] colliders, a collision scheme with a large crossing angle is popular to overcome the hourglass effect. The crab waist scheme is adopted to further boost luminosity performance. Weak–strong simulations were mainly used in the early stage. Strong–strong simulations have been done since last year for the collision with a large crossing angle. Coherent beam–beam instability has been seen in the simulation for FCC. We discuss the instability for th

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Gabor, C., J. J. Back, D. C. Faircloth, Z. Izaola, S. R. Lawrie, and A. P. Letchford. "H– beam transport experiments in a solenoid low energy beam transport." Review of Scientific Instruments 83, no. 2 (2012): 02B719. http://dx.doi.org/10.1063/1.3678656.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!