Log in

Relevant bibliographies by topics / Beams with straight cable / Journal articles

To see the other types of publications on this topic, follow the link: Beams with straight cable.

Journal articles on the topic 'Beams with straight cable'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Beams with straight cable.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

SOUZA JUNIOR, O. A., and D. R. C. OLIVEIRA. "Influence of the cable´s layout on the shearing resistance of prestressed concrete beams." Revista IBRACON de Estruturas e Materiais 9, no. 5 (October 2016): 765–95. http://dx.doi.org/10.1590/s1983-41952016000500008.

Full text

Abstract:

Abstract Little information on experimental investigations regarding the influence of the prestressing forces in the shear resistance of prestressed beams is found in the technical literature. Thus, it was experimentally evaluated the shear resistance of six post-tensioned prestressed concrete beams with cross section of (150 x 450) mm2, total length of 2400 mm and concrete's compressive resistance of 30 MPa, with the variables of this work being the layout of the prestressing cable, straight or parabolic, and the stirrups geometric rate. Verticals displacement, steel and concrete's strains and a comparison of the experimental loads with the estimates of ACI 318, EUROCODE 2 and NBR 6118: 2014 codes are presented and discussed. The results showed that the cable's parabolic layout increased the beams' shear resistance in up to 16% when compared to beams with straight cables.

APA, Harvard, Vancouver, ISO, and other styles

2

Deputy, Leven, Yasha Zeinali, and Brett Story. "A Modified Catenary Model with Application to the Analysis and Design of Retrofit Cables for Progressive Collapse." Infrastructures 3, no. 3 (July 20, 2018): 26. http://dx.doi.org/10.3390/infrastructures3030026.

Full text

Abstract:

Progressive collapse, the extensive or complete collapse of a structure resulting from the failure of one or a small number of structural components, has become a focus of research efforts and design considerations following events occurring at the Ronan Point apartment building in London, the Murrah Federal Building in Oklahoma City, and the World Trade Center in New York City. A principle research and design area for progressive collapse investigates the behavior of structural frames when column support is removed. The mechanism that results from loss of column support in structural frames characteristically involves beams that are unable to provide sufficient flexural resistance. Cable retrofit is one method to enhance existing frames and supplement or replace the post-mechanism beam load resistance with straight-legged catenary resistance after a column removal. The cables are located linearly along the beam geometry and are affixed at beam supports. This paper investigates both static and dynamic behavior of the catenary action of retrofit cables, which include both the linear and nonlinear material behavior of the cable material. Moreover, a simplified model serves as the basis for retrofit cable design is presented. Finite element modeling and experimentation in this paper verify and validate the applicability of the model. Finally, a framework for developing a procedure for retrofit cable design is presented.

APA, Harvard, Vancouver, ISO, and other styles

3

Yamin, Ibham, Siswanti Zuraida, and Ilham Ilham. "Analisis Perbandingan Kehilangan Prategang Akibat Variasi Letak Tendon PC I Girder Jembatan Beton Prategang." JOURNAL OF APPLIED SCIENCE (JAPPS) 2, no. 2 (September 18, 2020): 034–42. http://dx.doi.org/10.36870/japps.v2i2.184.

Full text

Abstract:

Prestressed force loss always occurs in prestressed concrete (loss prestressed). The most common form used in pre-tensile beams is straight tendons and for post-tensile beams are curved tendons. In planning a prestressed concrete bridge structure, the loss of prestressed force must be considered, because the stress on the prestressed concrete tendon decreases continuously over time. The number of factors that are interrelated, for the effectiveness of the design, location of tendons along the spans need to be considered, so that the tensile strength that occurs in the extreme fiber beam is limited or none at all in the cross section. This final project will examine the shape of the PC beam I Girder with 4 tendon setting conditions namely straight tendon cable which is on the neutral axis so that the eccentricity = 0 (condition1), straight tendon cable which is at 1/6 h so that the eccentricity ≠ 0 (condition 2), tendon cable with draped / parabolic shape (condition 3), and tendon condition with harped shape (condition 4). The biggest prestressed loss results were PC I Girder (condition 2) = 395.81 MPa (26.07%), while the smallest prestressed loss is PC I Girder (condition3) = 367.44 MPa (24.2%). Condition 1 and 2 in girder is not suitable for use because it exceeds the value of the allowable stress at the limit of prestressed and deflection permits on girder are safe for each condition.

APA, Harvard, Vancouver, ISO, and other styles

4

Chen, Jun Sheng, Shu Zhuo Liu, Ren Guo Gu, Ying Guang Fang, and Hai Hong Mo. "Model Test Study on a Large-Section Cable Tunnel." Applied Mechanics and Materials 353-356 (August 2013): 1411–16. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1411.

Full text

Abstract:

The profile layout rationality and internal stress structure of a large-section cable tunnel and a cable-laying scheme at splicing locations were studied through full-scale model test. The full scale shield tunnel which the diameter was 6m was built on the ground. The model tests test the displacement of cable bearers, the coupling area between horizontal beam and steel ring, the coupling area between horizontal beam and steel pillar, edge beam and center beam under design loads, and the safety and reliability of an arc steel framing system that supports the cable load inside the cable tunnel during the operation stage were demonstrated. The cable-laying schemes for the cross section and straight-through-type and T-type couplings of a large-section cable tunnel were optimized through experiment on actually laid-out cables. For the section layout of a large-section cable tunnel, it is believed that the double-deck scheme prevails over the single-deck scheme, and such a cable-splicing scheme can meet the cable-laying requirement.

APA, Harvard, Vancouver, ISO, and other styles

5

Tang, Haosu, Damien Laporte, and Dimitrios Vavylonis. "Actin cable distribution and dynamics arising from cross-linking, motor pulling, and filament turnover." Molecular Biology of the Cell 25, no. 19 (October 2014): 3006–16. http://dx.doi.org/10.1091/mbc.e14-05-0965.

Full text

Abstract:

The growth of fission yeast relies on the polymerization of actin filaments nucleated by formin For3p, which localizes at tip cortical sites. These actin filaments bundle to form actin cables that span the cell and guide the movement of vesicles toward the cell tips. A big challenge is to develop a quantitative understanding of these cellular actin structures. We used computer simulations to study the spatial and dynamical properties of actin cables. We simulated individual actin filaments as semiflexible polymers in three dimensions composed of beads connected with springs. Polymerization out of For3p cortical sites, bundling by cross-linkers, pulling by type V myosin, and severing by cofilin are simulated as growth, cross-linking, pulling, and turnover of the semiflexible polymers. With the foregoing mechanisms, the model generates actin cable structures and dynamics similar to those observed in live-cell experiments. Our simulations reproduce the particular actin cable structures in myoVΔ cells and predict the effect of increased myosin V pulling. Increasing cross-linking parameters generates thicker actin cables. It also leads to antiparallel and parallel phases with straight or curved cables, consistent with observations of cells overexpressing α-actinin. Finally, the model predicts that clustering of formins at cell tips promotes actin cable formation.

APA, Harvard, Vancouver, ISO, and other styles

6

Panday, R., Xiao An Fu, Srihari Rajgopal, T. Lisby, S. A. Nikles, K. Najafi, and Mehran Mehregany. "Mechanical Testing of Flexible Silicon Carbide Interconnect Ribbons." Materials Science Forum 527-529 (October 2006): 1107–10. http://dx.doi.org/10.4028/www.scientific.net/msf.527-529.1107.

Full text

Abstract:

This paper explores polycrystalline 3C-silicon carbide (poly-SiC) deposited by LPCVD for fabricating flexible ribbon cable interconnects for micromachined neural probes. While doped silicon is used currently, we hypothesized that poly-SiC will provide enhanced mechanical robustness due to SiC’s superior mechanical properties. Paralleling prior work in silicon, forty-two different designs were fabricated from nitrogen-doped poly-SiC films deposited by LPCVD at 900°C using dichlorosilane and acetylene as precursors. The different designs were then tested in bending and twisting modes. Curved beams were found to bend nearly 250% more than straight beams before fracture. Longer beams withstood greater bending and twisting due to greater compliance. Longer and narrower beams generally outperformed shorter beams irrespective of design. Also, doped poly-SiC beams had, on average, breaking angles that were greater than those of identical doped silicon beams by ~50% in bending and ~20% in twisting modes. The paper details the designs studied, describes the fabrication process for the test structures and compares/contrasts the testing and simulation results related to the different designs to identify best design practices.

APA, Harvard, Vancouver, ISO, and other styles

7

Wu, Jie, Yong Hua Yang, and Xiao Qun Luo. "Research on Construction Control Analysis for Pretensioned Structure." Advanced Materials Research 243-249 (May 2011): 198–203. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.198.

Full text

Abstract:

The theory of geometrical nonlinear analysis is introduced. The sag effect is considered by the multiple-straight truss elements. The unstress length which is modeled the tension force of cable is figured out. Three kind of positions where the new elements are activated on are offered: tangent to old elements, parallel to old elements and original model coordinate, the method of parallel to old elements is used in the construction stages analysis and the method of original model coordinate is used in the construction control analysis. The purpose of construction control analysis for pretensioned structure in this paper is that the architectural configuration should be satisfied after construction control analysis is finished. The procedure of construction control analysis for pretensioned structure is summarized. The computational accuracy and the effectiveness are proven by the example of the cantilever beam with cables.

APA, Harvard, Vancouver, ISO, and other styles

8

Jiang, Zheng Rong, Mu Xu, Wei Ning Duan, Kai Rong Shi, Jian Cai, and Shi Tong Wang. "Nonlinear Finite Element Analysis of Beam String Structure." Advanced Materials Research 163-167 (December 2010): 2124–30. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2124.

Full text

Abstract:

Beam string structure (BSS), which is a new kind of semi-rigid hybrid system, composed of arch, strut and string, has been developed rapidly in long-span steel structures in recent years. Based on the principle of virtual work and Updated Lagrange, the formulas of geometric nonlinear F.E.M. for spatial beam element, cable element and truss element are derived respectively in this paper. Taking the one-way BSS model of the steel roof in Guangzhou International Convention and Exhibition Center as a computational example by using both linear and nonlinear analysis method, the analytical results show that it is appropriate when adopting the straight truss element with two joints and equivalent elastic modulus to simulate the cable element with small sag. Although the linear analysis can meet the requirement of practical engineering due to its weak nonlinearity of BSS, the nonlinear method is also important to improve the precision theoretically. The conclusions obtained may be helpful for the designers in similar projects.

APA, Harvard, Vancouver, ISO, and other styles

9

Kim, Moon-Young, Nemekhbayar Nanzad, and Umar Hayat. "Effects of un-bonded deviators on the out-of-plane buckling of steel H-beams pre-stressed by a straight tendon cable." Engineering Structures 214 (July 2020): 110566. http://dx.doi.org/10.1016/j.engstruct.2020.110566.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Copper, C. D., and W. D. Pilkey. "Thermoelasticity Solutions for Straight Beams." Journal of Applied Mechanics 69, no. 3 (May 1, 2002): 224–29. http://dx.doi.org/10.1115/1.1427340.

Full text

Abstract:

This paper presents a thermoelastic solution technique for beams with arbitrary quasi-static temperature distributions that create large transverse normal and shear stresses. This technique calculates the stress resultants and centroid displacements along a beam. Then, the stress resultants and temperature distribution are used to calculate the stress distributions on a cross section of the beam. Simple examples demonstrate the numerical efficiency of the proposed technique and the inadequacy of the strength of materials theory to solve these types of problems.

APA, Harvard, Vancouver, ISO, and other styles

11

Kumar, Pankaj, Abhijit Ganguli, and Gurmail S. Benipal. "Mechanics of Cable-Suspended Beams." Latin American Journal of Solids and Structures 14, no. 3 (March 2017): 544–59. http://dx.doi.org/10.1590/1679-78253259.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Chaen, S., J. Inoue, and H. Sugi. "The force-velocity relationship of the ATP-dependent actin-myosin sliding causing cytoplasmic streaming in algal cells, studied using a centrifuge microscope." Journal of Experimental Biology 198, no. 4 (April 1, 1995): 1021–27. http://dx.doi.org/10.1242/jeb.198.4.1021.

Full text

Abstract:

When uncoated polystyrene beads suspended in Mg-ATP solution were introduced into the internodal cell of an alga Chara corallina, the beads moved along the actin cables with directions and velocities (30-62 microns s-1) similar to those of native cytoplasmic streaming. Bead movement was inhibited both in the absence of ATP and in the presence of CA2+, as with native cytoplasmic streaming. These results indicate that bead movement is caused by cytoplasmic myosin molecules attached to the head surface interacting with actin cables. The steady-state force-velocity relationship of the actin-myosin sliding that produces cytoplasmic streaming was determined by applying constant centrifugal forces to the beads moving on the actin cables. The force-velocity curve in the positive load region was nearly straight, and the implications of this shape are discussed in connection with the kinetic properties of the actin-myosin interaction in cytoplasmic streaming. It is suggested that the time for which a cytoplasmic myosin head is detached from actin in one cycle of actin-myosin interaction is very short. The Ca(2+)-induced actin-myosin linkages, responsible for the Ca(2+)-induced stoppage of cytoplasmic streaming, were shown to be much stronger than the rigor actin-myosin linkages.

APA, Harvard, Vancouver, ISO, and other styles

13

Pan, Quan, Zhuangpeng Yi, Donghuang Yan, and Hongsheng Xu. "Pseudo-Static Analysis on the Shifting-Girder Process of the Novel Rail-Cable-Shifting-Girder Technique for the Long Span Suspension Bridge." Applied Sciences 9, no. 23 (November 28, 2019): 5158. http://dx.doi.org/10.3390/app9235158.

Full text

Abstract:

The rail-cable-shifting-girder (RCSG) technique is a new erecting method for the main girders of the long span suspension bridge in rural mountain areas with poor transportation and no navigable rivers for carrying large components. The pseudo-static analysis of the shifting-girder process for this girder erecting technique is performed. The global mechanical model of the double-layer cable system in the shifting-girder process is established, by analytically modeling the main-cable, rail cable, and slings according to cable’s basic assumptions. Based on the flexible cable theory, the main-cable segments are simulated as segmental catenary elements, the slings are considered as straight cable elements, the rail-cable segment that the shifting-girder trolley is moving on is simulated as multiple straight cable elements and other rail-cable segments are considered as single straight cable elements. The solving program is developed to obtain the pseudo-static responses including the forces and deflections of the shifting-girder system undergoing girder loads. Meanwhile, a global indoor reduced-scale model of shifting-girder system is designed to validate the presented theoretical results, by taking the Aizhai suspension bridge as engineering background. The results from the presented theoretical method match well with the measured experimental results of the indoor model test. The forces and deflections of the main-cable, rail-cable, and slings for the 21 working cases of erecting girder segments exhibit some specific distribution regularities. The presented theoretical method is able to correctly and effectively solve the pseudo-static responses of the RCSG system undergoing girder loads for the long span suspension bridge adopting the construction method of the RCSG technique.

APA, Harvard, Vancouver, ISO, and other styles

14

Boni, Claudio, Marco Silvestri, and Gianni Royer-Carfagni. "Flexural tensegrity of segmental beams." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 476, no. 2237 (May 2020): 20200062. http://dx.doi.org/10.1098/rspa.2020.0062.

Full text

Abstract:

The term ‘flexural tensegrity’ applies to beam-like structures composed of segments in unilateral contact, whose integrity under flexion is provided by tendons (cables), tensioned and later anchored at the end segments. In addition to the cable tension, the constitutive response depends upon the shape of the contact surfaces between consecutive segments, identified by the corresponding pitch lines and constructed with a double couple of conjugate profiles, in order to achieve an internal constraint equivalent to a spring hinge. The response is non-local in type, because the cable elongation, and consequently the stiffness of the spring hinges, depends upon the rotations of all the segments, but this effect becomes negligible under moderate deflections. In this case, the structure can be approximated with an elastica in the continuum limit. Testing of prototypes, manufactured with a 3D printer, shows a very good agreement with the theoretical predictions for different designs of the spring hinges. The system, whose stiffness can be functionally graded and actively controlled, can be packaged when the cable is slack and deployed by pulling the cable at one extremity. It appears particularly suitable to build soft arms for robotics or deployable compliant booms for aerospace applications.

APA, Harvard, Vancouver, ISO, and other styles

15

Hawla, D. L., and H. Neishlos. "Simulating curved beams via offset straight elements." Engineering Computations 2, no. 3 (March 1985): 257–58. http://dx.doi.org/10.1108/eb023623.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Waldron, P. "Sectorial properties of straight thin-walled beams." Computers & Structures 24, no. 1 (January 1986): 147–56. http://dx.doi.org/10.1016/0045-7949(86)90344-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Fu, Jian, Liang Ming Luo, and Ren Bo Tan. "A Straight-Line Trajectory Tomography Method with Algebraic Iteration Reconstruction." Advanced Materials Research 655-657 (January 2013): 718–22. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.718.

Full text

Abstract:

A straight-line trajectory tomography method, based on multiple tilted X-ray cone-beams formed by multiple sources and detectors, is investigated. In this method, multiple cone-beams are fixed and tilted at different positions and only the object translates along a straight-line trajectory. This kind of imaging method may have potential applications in industry testing and security inspections. As is known, projection data from a straight-line trajectory based on single cone-beam are incomplete and their reconstruction suffers from a limited-angle problem. The proposed straight-line trajectory tomography method based on multiple tilted X-ray cone-beams can be used to compensate these deficiencies. To reconstruct images, algebraic reconstruction technique (ART) algorithm is deduced. Numerical simulations validate our method.

APA, Harvard, Vancouver, ISO, and other styles

18

Bhagwat, M., S. Sasmal, B. Novák, and A. Upadhyay. "Dynamic performance evaluation of straight and curved cable-stayed bridges." Bridge Structures 5, no. 2-3 (June 2009): 87–95. http://dx.doi.org/10.1080/15732480903142450.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Oka, Keisuke, Satoru Koizumi, Kouichi Murata, Hideo Takei, Hiroyuki Mabuchi, Hideo Kawahara, Shigeru Fujii, and Jyunji Hirano. "Development of Water Impervious Straight Joint between 22kV Water Impervious XLPE Cable and 22kV XLPE Cable." IEEJ Transactions on Power and Energy 122, no. 8 (2002): 923–29. http://dx.doi.org/10.1541/ieejpes1990.122.8_923.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Fu, Jian, Jun Wei Zhang, and Ren Bo Tan. "A Straight-Line Trajectory Tomography Method Based on Multiple Tilted X-Ray Cone-Beams." Applied Mechanics and Materials 239-240 (December 2012): 238–42. http://dx.doi.org/10.4028/www.scientific.net/amm.239-240.238.

Full text

Abstract:

A straight-line trajectory tomography method, based on multiple tilted X-ray cone-beams formed by multiple sources and detectors, is investigated. In this method, multiple cone-beams are fixed and tilted at different positions and only the object translates along a straight-line trajectory. This kind of imaging method may have potential applications in industry testing and security inspections. As is known, projection data from a straight-line trajectory based on single cone-beam are incomplete and their reconstruction suffers from a limited-angle problem. The proposed straight-line trajectory tomography method based on multiple tilted X-ray cone-beams can be used to compensate these deficiencies. To reconstruct images, the filtered back-projection (FBP) reconstruction algorithm for the middle plane is first derived from the Fourier slice theorem. It is then extended to non-middle planes with the Feldkamp-Davis-Kress (FDK) approximation. Numerical simulations validate our method.

APA, Harvard, Vancouver, ISO, and other styles

21

Lei, Man Cheong, and Denny Oetomo. "Cable Wrapping Phenomenon in Cable-Driven Parallel Manipulators." Journal of Robotics and Mechatronics 28, no. 3 (June 17, 2016): 386–96. http://dx.doi.org/10.20965/jrm.2016.p0386.

Full text

Abstract:

[abstFig src='/00280003/15.jpg' width=""300"" text='Cable wrapping phenomenon of cable robot' ] In the study of cable-driven parallel manipulators (CDPMs), the interference between the cable and the rigid link(s) of the mechanisms have generally been excluded when the workspace is considered. This leads to the loss of perfectly feasible and useful areas in the workspace. In this paper, we model such a phenomenon by letting the cable wrap around the rigid link and including the results under workspace considerations. We construct a kinematic model of the cable path in a CDPM to include that segment of the cable wrapped over the surface of the rigid link, in addition to modeling the straight (unwrapped) segments of actuation cables in a conventional manner. The path that the cable wrapping around the rigid link describes is a function of the displacement of one or more rigid links. When wrapping occurs, contact between the cable and the rigid link is no longer restricted to a stationary point on the body attached frame, as in the case of a conventional CDPM, but becomes instead a function of the rigid link’s pose. The cable is assumed to be taut at all times, so finding the cable configuration is equivalent to finding the geodesic solution for the convex hull of a rigid body. Analysis is firstly presented for a basic case of finding the path of a single cable wrapped over an arbitrary (convex) rigid body, with specific illustration performed for a cylindrical rigid body. Modeling and analysis are then applied to the case of a certain CDPM that enables wrapped cable segments in its operation.

APA, Harvard, Vancouver, ISO, and other styles

22

Xiao, C., L. Groening, H. Vormann, S. Mickat, R. Hollinger, A. Adonin, A. Orzhekhovskaya, et al. "Straight low energy beam transport for intense uranium beams." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 788 (July 2015): 173–81. http://dx.doi.org/10.1016/j.nima.2015.03.055.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Leichti, Robert J., and Chai H. Yoo. "Straight, Single‐Tapered Composite I‐Beams of Orthotropic Materials." Journal of Materials in Civil Engineering 4, no. 4 (November 1992): 399–414. http://dx.doi.org/10.1061/(asce)0899-1561(1992)4:4(399).

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Hajianmaleki, Mehdi, and Mohamad S. Qatu. "Vibrations of straight and curved composite beams: A review." Composite Structures 100 (June 2013): 218–32. http://dx.doi.org/10.1016/j.compstruct.2013.01.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Han, S. M., and M. A. Grosenbaugh. "Non-linear free vibration of a cable against a straight obstacle." Journal of Sound and Vibration 273, no. 1-2 (May 2004): 337–61. http://dx.doi.org/10.1016/s0022-460x(03)00542-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Nikbakht, Ehsan, Hugo Aureliano da Costa Gaspar, Rakan Mousa Jaradah, and Muslich Hartadi Sutanto. "Investigation on the Influence of Type of Steel Fibers on Shear Failure of HPFRCC Beams." MATEC Web of Conferences 203 (2018): 06018. http://dx.doi.org/10.1051/matecconf/201820306018.

Full text

Abstract:

This paper investigates the influence of different types of steel fiber on the mechanical properties of High Performance Fiber Reinforced Cementitious Composite (HPFRCC) as well as the shear failure mode of steel reinforced HPFRCC beams. Moreover, the influence of parameters such as span to effective depths (a/d) ratio of beams and longitudinal reinforcement ratio on shear strength of HPFRCC beams are examined. In reference to the results, despite the same tensile strength of both straight and hooked fibers utilized, the performance of straight steel fiber is superior to the hooked steel fiber due to its physiognomies. However, the beam specimens with straight steel fiber exhibit considerably lower deflection and ultimate load capacity when subjected to shear load. Also, the results show that the influence of type of steel fiber is more significant than the influence of longitudinal reinforcement ratio, i.e. the beam specimen with hooked steel fiber and 0.94% reinforcement ratio displayed higher deflection and ultimate shear load capacity compared to the specimen with straight steel fiber and 1.88% longitudinal reinforcement ratio.

APA, Harvard, Vancouver, ISO, and other styles

27

Kashefi, Kiana, Abdul Hamid Sheikh, Michael C. Griffith, MS Mohamed Ali, and Kazuo Tateishi. "Static and vibration characteristics of thin-walled box beams: An experimental investigation." Advances in Structural Engineering 20, no. 10 (January 25, 2017): 1540–59. http://dx.doi.org/10.1177/1369433216687565.

Full text

Abstract:

Static and vibration characteristics of thin-walled straight and curved box beams were investigated experimentally. Three different beam configurations were considered for the tests: one straight and two curved box beams. The load was applied at the centroid of the box section for the straight and one curved beam specimens. However, for the other curved specimen, the load was applied eccentrically to investigate its behavior under the additional torsion induced by the eccentricity. Displacements and strains were obtained using linear variable displacement transducer, one-directional and rosette strain gages. The specimens were excited using an impact at their free ends. The time history of strains was obtained to calculate natural frequencies and damping ratios. The experiment results were compared with those obtained from three-dimensional finite element analysis for all cases. The results obtained from implementing tests on the straight specimen were also used to validate an efficient numerical method recently developed by the authors.

APA, Harvard, Vancouver, ISO, and other styles

28

Yavaş, Altuğ, Umut Hasgul, Kaan Turker, and Tamer Birol. "Effective fiber type investigation on the shear behavior of ultrahigh-performance fiber-reinforced concrete beams." Advances in Structural Engineering 22, no. 7 (January 3, 2019): 1591–605. http://dx.doi.org/10.1177/1369433218820788.

Full text

Abstract:

In this study, the effects of different fiber types on shear behavior (cracking pattern, shear cracking strength, ultimate shear strength, and post-cracking deformability) of ultrahigh-performance fiber-reinforced concrete beams were investigated experimentally. For this purpose, 15 ultrahigh-performance fiber-reinforced concrete beams including different steel fiber types (two straight, two hooked, and one double hooked) with three volume fractions (0.5%, 1.0%, and 1.5%) were casted without shear reinforcement and tested under four-point loading until the failure. In addition to the experimental program, three existing numerical models proposed for the shear capacity of fiber-reinforced concrete beams were investigated to show the applicability of these models to the ultrahigh-performance fiber-reinforced concrete beams. The experimental results demonstrated that the straight fiber of 13 mm is the most effective fiber type in terms of the considered parameters. However, the addition of 13-mm straight fiber with 1.5% by volume into the ultrahigh-performance fiber-reinforced concrete beam changed the failure mode from the shear to flexure without shear reinforcement.

APA, Harvard, Vancouver, ISO, and other styles

29

Iluk, Artur. "Investigation of Mechanical Strains in Thermal Compensation Loop of Superconducting NbTi Cable during Bending and Cyclic Operation." Materials 14, no. 5 (February 26, 2021): 1097. http://dx.doi.org/10.3390/ma14051097.

Full text

Abstract:

In the paper, the thermal compensation loops on a composite, superconducting NbTi cable were investigated. This type of cable is used in the superconducting, fast ramping magnets of the SIS100 synchrotron, part of the Facility for Antiproton and Ion Research (FAIR) under construction in Darmstadt, Germany. The influence of space restrictions and electromagnetic cross-talk on the design of the thermal compensation loop was discussed. Plastic deformation of cable components during bending was analyzed by numerical simulations and experiments. A three-dimensional numerical model of the cable was prepared with individual superconducting wires in contact with a central cooling pipe. The bending of a straight cable into a compensation loop shape was simulated, followed by cyclic operation of the cable during thermal cycles. The maximum strains in the superconducting strands and cooling tube were analyzed and discussed.

APA, Harvard, Vancouver, ISO, and other styles

30

Wen, Jihong. "ELASTIC WAVE BAND GAPS IN FLEXURAL VIBRATIONS OF STRAIGHT BEAMS." Chinese Journal of Mechanical Engineering 41, no. 04 (2005): 1. http://dx.doi.org/10.3901/jme.2005.04.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Pap, Zsuzsa Borbála, and Imre Bojtár. "The analysis of shearing stresses at straight and curved beams." Építés - Építészettudomány 40, no. 3-4 (September 2012): 241–92. http://dx.doi.org/10.1556/eptud.40.2012.3-4.3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

HAYASHIKAWA, Toshiro, Yoshitaka MATSUI, Tsutomu KITAJIMA, and Koichi SATO. "Analytical Study on Torsional Vibration of Thin-Walled Straight Beams." Journal of applied mechanics 1 (1998): 303–10. http://dx.doi.org/10.2208/journalam.1.303.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Anwar, M. Arefin, Muthukumaran Packirisamy, and A. K. Waiz Ahmed. "Disc type thermal actuator with straight beams for angular motion." Applied Thermal Engineering 51, no. 1-2 (March 2013): 988–99. http://dx.doi.org/10.1016/j.applthermaleng.2012.09.036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Vaz, M. A., M. H. Patel, and J. A. Witz. "Three-Dimensional Transient Behavior of Towed Marine Cables." Journal of Ship Research 41, no. 01 (March 1, 1997): 45–56. http://dx.doi.org/10.5957/jsr.1997.41.1.45.

Full text

Abstract:

A numerical solution is presented for the three-dimensional transient motion of a marine cable towed by a vessel that can arbitrarily change speed and direction on the horizontal plane of the water surface. The solution is obtained by dividing the towed cable into η straight rigid elements. The translational and rotational motion of each element is described by its elevation and azimuth angles. The equations of force and moment equilibrium and the geometric compatibility relationships for each element are used to form a system of 2n ordinary differential equations which are solved numerically using the Runge-Kutta method. In order to illustrate the solution, a range of results are presented for cable tension and towed cable motions as the towing vessel carries out turning maneuvers.

APA, Harvard, Vancouver, ISO, and other styles

35

Tanaka, T., Y. Sekii, H. Satoh, and M. Yamaguchi. "Development of prefabricated type straight through joint for 275 kV XLPE cable." IEEE Transactions on Power Delivery 7, no. 2 (April 1992): 995–1001. http://dx.doi.org/10.1109/61.127109.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Shruthi, C. M., A. P. Sudheer, and M. L. Joy. "Dual arm electrical transmission line robot: motion through straight and jumper cable." Automatika 60, no. 2 (April 3, 2019): 207–26. http://dx.doi.org/10.1080/00051144.2019.1609256.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Bjerg, Jesper Tataru, Lars Riis Damgaard, Simon Agner Holm, Andreas Schramm, and Lars Peter Nielsen. "Motility of Electric Cable Bacteria." Applied and Environmental Microbiology 82, no. 13 (April 15, 2016): 3816–21. http://dx.doi.org/10.1128/aem.01038-16.

Full text

Abstract:

ABSTRACTCable bacteria are filamentous bacteria that electrically couple sulfide oxidation and oxygen reduction at centimeter distances, and observations in sediment environments have suggested that they are motile. By time-lapse microscopy, we found that cable bacteria used gliding motility on surfaces with a highly variable speed of 0.5 ± 0.3 μm s−1(mean ± standard deviation) and time between reversals of 155 ± 108 s. They frequently moved forward in loops, and formation of twisted loops revealed helical rotation of the filaments. Cable bacteria responded to chemical gradients in their environment, and around the oxic-anoxic interface, they curled and piled up, with straight parts connecting back to the source of sulfide. Thus, it appears that motility serves the cable bacteria in establishing and keeping optimal connections between their distant electron donor and acceptors in a dynamic sediment environment.IMPORTANCEThis study reports on the motility of cable bacteria, capable of transmitting electrons over centimeter distances. It gives us a new insight into their behavior in sediments and explains previously puzzling findings. Cable bacteria greatly influence their environment, and this article adds significantly to the body of knowledge about this organism.

APA, Harvard, Vancouver, ISO, and other styles

38

Murín, Justín, Juraj Hrabovský, and Vladimír Kutiš. "Calculation of stress in FGM beams." MATEC Web of Conferences 157 (2018): 06006. http://dx.doi.org/10.1051/matecconf/201815706006.

Full text

Abstract:

Content of the paper is oriented to calculation of elastic normal stress in the Functionally Graded Beams (FGM). Spatial variation of material properties is considered in the lateral, transversal and longitudinal direction of the straight beam. The displacements and internal forces are calculated using our new FGM finite beam element. Heterogeneous material properties are homogenized by extended mixture rules, laminate theory and reference volume element (RVE). Obtained results by our approach are evaluated and compared with the ones obtained by the 3D solid finite elements.

APA, Harvard, Vancouver, ISO, and other styles

39

Yung-Cheng, Wang, wang Dau-Chung, and Lin Tsan-Chu. "Using Focused Electron Beams to Drill Straight Nanopores on a Membrane." International Journal of Automation and Smart Technology 4, no. 3 (September 1, 2014): 157–62. http://dx.doi.org/10.5875/ausmt.v4i3.556.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Bourne, F. R., and M. W. Dixon. "Trends in Eigenvalues of Straight and Bent Beams on Elastic Supports." Journal of Vibration and Acoustics 109, no. 2 (April 1, 1987): 133–37. http://dx.doi.org/10.1115/1.3269404.

Full text

Abstract:

Singular value analysis is used to develop eigenvalue and eigenvector trends for beams supported by periodically-spaced, elastic elements. These trends are illustrated for both straight and bent beams as a function of the number of spans in the system, the boundary conditions, and the ratio of support to beam stiffness. As might be speculated, the effect of boundary conditions decreases as the number of spans increases. Also the effect of a bend becomes more pronounced as the bend is moved nearer the center of the beam. Simplified models are presented which provide excellent approximations of the first natural frequency for certain values of the ratio of support to beam stiffness.

APA, Harvard, Vancouver, ISO, and other styles

41

Yang, Yeong‐Bin, Shyh‐Rong Kuo, and Jong‐Dar Yau. "Use of Straight‐Beam Approach to Study Buckling of Curved Beams." Journal of Structural Engineering 117, no. 7 (July 1991): 1963–78. http://dx.doi.org/10.1061/(asce)0733-9445(1991)117:7(1963).

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Fu, B. L., Y. J. Chen, and H. M. Liu. "Springback variational principles of bending of straight beams with large deflection." Journal of Materials Processing Technology 187-188 (June 2007): 220–23. http://dx.doi.org/10.1016/j.jmatprotec.2006.11.086.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Fujii, F., M. Naito, and S. X. Gong. "Finite displacement theory of straight beams under configuration-dependent uniform loads." Computers & Structures 36, no. 1 (January 1990): 157–67. http://dx.doi.org/10.1016/0045-7949(90)90185-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Rosman, Riko. "Arch-cable-grid methods in the analysis of shallow straight-edged hypar shells." Building and Environment 20, no. 3 (January 1985): 181–94. http://dx.doi.org/10.1016/0360-1323(85)90013-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Tarnai, T. "Unsymmetrical Bending of Beams: A Matrix Formulation." International Journal of Mechanical Engineering Education 24, no. 2 (April 1996): 144–49. http://dx.doi.org/10.1177/030641909602400208.

Full text

Abstract:

In this note the bending of uniform straight beams of unsymmetrical cross-section is investigated by matrices. The importance of the matrix of the inertia tensor of the cross-section is shown. Matrix formulae are presented for the normal stress, the flexural shearing stress in the case of thin-walled open sections, and the deflection curve in the case of small displacements. Matrix formulation makes this problem easy to handle; and so it provides an aid in teaching the subject.

APA, Harvard, Vancouver, ISO, and other styles

46

Luo, A. C. J., and C. D. Mote,. "Equilibrium Solutions and Existence for Traveling, Arbitrarily Sagged Elastic Cables." Journal of Applied Mechanics 67, no. 1 (August 10, 1999): 148–54. http://dx.doi.org/10.1115/1.321159.

Full text

Abstract:

The exact, closed-form, three-dimensional solutions for the steady motion of traveling, sagged, elastic cables under arbitrarily distributed and concentrated loading are developed in this paper. Three components of displacement describing two equilibrium states of an extensible traveling elastic cable are derived. These exact solutions apply to straight and sagged cables traveling under their own weight and uniformly distributed loading. The exact solutions are also used to investigate the steady motion of three-dimensional traveling cables under the uniformly distributed and concentrated loading. Traveling elastic cables with large sag can be modeled approximately through the inextensible cable model when both the loading and the translation speed are very small. A slightly sagged cable must be modeled as extensible, rather than inextensible, even though both the loading and transport speed are very small. These solutions can be applied to multispan cable structures. [S0021-8936(00)02601-5]

APA, Harvard, Vancouver, ISO, and other styles

47

Ding, Mingmin, Bin Luo, Shuyao Ding, Yuzhou Shen, and Lifan Huang. "Experimental Investigation and Numerical Simulation of a Levy Hinged-Beam Cable Dome." Buildings 11, no. 3 (March 10, 2021): 110. http://dx.doi.org/10.3390/buildings11030110.

Full text

Abstract:

According to existing rigid roofing projects, a new structure called the Levy hinged-beam cable dome is proposed. By replacing the upper flexible cables with hinged beams, rigid plates can be installed overhead. To fulfill the requirements of integral tow-lifting construction, the setting criteria for the temporary hinged joints on ridge beams were presented. An 8-m diameter specimen was manufactured and monitored to investigate the structural configurations during the accumulative traction-hoisting construction process. Finally, the specimen was tested under full-span and half-span loading conditions, while a numerical model was built to verify the experimental values. The results show that in the early stages of traction-hoisting, the structure establishes the overall prestress and finds its internal force balance, while the entire structure is in a shape of “ω”. As the component’s internal force increases during the construction steps, and the local deformations of the hinged beams gradually decrease, with the entire structure changing from “ω” to “m”, and finally reach their designed states. Under full-span loads, large local deformations occurred at the HB-3 hinges, while the bending stresses of these hinged beams were relatively small. Under half-span loads, the loading part exhibits a downward appearance, while the unloading part exhibits upward deflection.

APA, Harvard, Vancouver, ISO, and other styles

48

Wang, Xin Ding, Hang Dai, and Yong Chao Zhang. "Study on Shear Behaviour of Concrete Beams Prestressed with External CFRP Tendons." Applied Mechanics and Materials 275-277 (January 2013): 1167–71. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1167.

Full text

Abstract:

Based on independent research and development of a CFRP tendons wedge-type anchorage, the shear tests of six CFRP external prestressing concrete beams were done. Among them, CFRP external tendons of three pieces were installed in straight line while other pieces were installed in curved line. The results of experimental research show that shear behaviour of concrete beams prestressed with CFRP external tendons are the similar process to the traditional prestressed reinforced concrete beams. They go through the elastic stage, the stage of crack extension, the yield stage of internal hoop reinforcements at the intersection of inclined cracks and the failure stage. When external CFRP tendons are arranged in the same situation, the cracking load and the shear capacity of concrete beams prestressed with CFRP external tendons reduce gradually along with the increase of shear-span ratio,.When shear-span ratio is equal, the cracking load and the shear capacity of concrete beams prestressed with curved arrangement of CFRP external tendons are larger than those of concrete beams prestressed with straight arrangement of CFRP external tendons. Compared with traditional concrete beams prestressed with external steel bars, due to elasticity modulus and shear modulus of CFRP tendons are both smaller than those of steel bars, the mid-span deflection of concrete beams prestressed with CFRP external tendons at the time of shear failure is bigger than that of traditional concrete beams prestressed with external steel bars under the same circumstance.

APA, Harvard, Vancouver, ISO, and other styles

49

Liu, Zhi-Min, Xue-Jin Huo, Guang-Ming Wang, and Wen-Yu Ji. "Test and Numerical Model of Curved Steel–Concrete Composite Box Beams under Positive Moments." Materials 14, no. 11 (May 31, 2021): 2978. http://dx.doi.org/10.3390/ma14112978.

Full text

Abstract:

Compared with straight steel–concrete composite beams, curved composite beams exhibit more complicated mechanical behaviors under combined bending and torsion coupling. There are much fewer experimental studies on curved composite beams than those of straight composite beams. This study aimed to investigate the combined bending and torsion behavior of curved composite beams. This paper presents static loading tests of the full elastoplastic process of three curved composite box beams with various central angles and shear connection degrees. The test results showed that the specimens exhibited notable bending and torsion coupling force characteristics under static loading. The curvature and interface shear connection degree significantly affected the force behavior of the curved composite box beams. The specimens with weak shear connection degrees showed obvious interfacial longitudinal slip and transverse slip. Constraint distortion and torsion behavior caused the strain of the inner side of the structure to be higher than the strain of the outer side. The strain of the steel beam webs was approximately linear. In addition, fine finite element models of three curved composite box beams were established. The correctness and applicability of the finite element models were verified by comparing the test results and numerical calculation results for the load–displacement curve, load–rotational angle curve, load–interface slip curve, and cross-sectional strain distribution. Finite element modeling can be used as a reliable numerical tool for the large-scale parameter analysis of the elastic–plastic mechanical behavior of curved composite box beams.

APA, Harvard, Vancouver, ISO, and other styles

50

Zlatuška, Karel, Jiří Stráským, and Radim Nečas. "Spatially Curved Cable-Supported Bridge Structures." Solid State Phenomena 259 (May 2017): 125–29. http://dx.doi.org/10.4028/www.scientific.net/ssp.259.125.

Full text

Abstract:

The article is focused on the design of spatially curved cable - supported footbridges, which represent a simple and elegant solution for bridging longer spans. It can be used independently or in a combination with other structural arrangements, e.g. with the arch structures.To verify the behavior of the structure, a several testing models were created. At first only simple, plan – straight models were created so the results could be checked by manual calculations. Latter, the more complex, curved models were tested. All models were designed and analyzed with the Ansys software using geometrically nonlinear calculations. The analysis consisted in the searching for ideal geometry of the supporting cable, cross section geometry of the bridge deck and other parameters, which are necessary to find a correct initial state of the structure. The main criterion for finding the initial state was a demand of minimal deformations in the strut - supporting nodes, which leads to the minimal redistribution of the internal forces during the design lifetime. The result of the paper is a detailed analysis of the construction’s behavior. The main emphasis is on methodology of search for the initial state. Further, the buckling analysis of the struts and cable were performed and it’s resistance to buckling was determined using various live load configurations.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!