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Journal articles on the topic 'Skew-angle'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Nnonyelu, Chibuzo Joseph, Meng Jiang, and Jan Lundgren. "A Lower Bound on the Estimation Variance of Direction-of-Arrival and Skew Angle of a Biaxial Velocity Sensor Suffering from Stochastic Loss of Perpendicularity." Sensors 22, no. 21 (2022): 8464. http://dx.doi.org/10.3390/s22218464.

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The biaxial velocity sensor comprises two nominally perpendicular particle velocity sensors and a collocated pressure sensor. Due to real-world imperfections in manufacturing or setup errors, the two axes may suffer from perpendicularity losses. To analytically study how skewness affects its direction-finding performance, the hybrid Cramér-Rao bound (HCRB) of the directions-of-arrival for the polar angle, azimuth angle and the skew angle of a biaxial velocity sensor that suffers from stochastic loss of perpendicularity were derived in closed form. The skew angle was modeled as a zero-mean Gaus

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2

H. M. Ali, Abdelhameed, and Anwar Adam Ahmed. "Effect of Skew Angle on Bridge Superstructures." FES Journal of Engineering Sciences 9, no. 1 (2021): 43–48. http://dx.doi.org/10.52981/fjes.v9i1.656.

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In this paper, the effect of skew angle on reinforced concrete skew bridge decks is presented by using the grillage analogy. The actual deck system of the bridge is represented by an equivalent grillage of longitudinal and transverse beams. A span 26m of simply supported bridge deck is taken as the case study to obtain the values of the bending moment' s distribution versus span length for the one type of skewness and the results are compared against the moments of the right deck span of the bridge. The analysis results were based (BS5400) dead and live loads using Structural Analysis program

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3

Fadhil, Ghaidak A. "EFFECTS OF SKEW ANGLE ON BENDING MOMENT'S DISTRIBUTION IN THE SKEW BRIDGE DECK." Journal of Engineering 14, no. 04 (2024): 3245–56. http://dx.doi.org/10.31026/j.eng.2008.04.28.

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In this paper the effect of skew angle on reinforced concrete skew bridges deck is presented by using the grillage analogy. The actual decking system of the bridge is represented by an equivalent grillage of beams. A span 24 m of simply supported right bridge deck with I-section prestressed concrete girders is taken as the case study to obtain the values of the bending moment's distribution for the two types of skewness (types 1 and 2) and the results of skew types are compared against the moments of the right deck span of the bridge. In the skew type 1 the deck span is increased as skew angle

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4

Srinivasa, C. V., Y. J. Suresh, and W. P. Prema Kumar. "Experimental and Finite Element Studies on Free Vibration of Skew Plates." International Journal of Applied Mechanics and Engineering 19, no. 2 (2014): 365–77. http://dx.doi.org/10.2478/ijame-2014-0024.

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Abstract The present paper deals with the experimental studies carried out on free vibration of isotropic and laminated composite skew plates. The natural frequencies were also determined using QUAD8 finite element of MSC/NASTRAN and a comparison was made between the experimental values and the finite element solution. The effects of the skew angle and aspect ratio on the natural frequencies of isotropic skew plates were studied. The effects of the skew angle, aspect ratio, fiber orientation angle and laminate sequence (keeping the number of layers constant) on the natural frequencies of antis

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5

Memar, Sargol, Mohammad Zounemat-Kermani, Ali-Asghar Beheshti, Giovanni De Cesare, and Anton J. Schleiss. "Investigation of local scour around tandem piers for different skew-angles." E3S Web of Conferences 40 (2018): 03008. http://dx.doi.org/10.1051/e3sconf/20184003008.

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In the present study the effect of the skew-angle of the alignment of tandem piers on local scour depth around them is investigated. The tandem piers were aligned with different skew-angles of θ=0°,30°,45°,60°,90° with respect to the flow direction. The results indicatethat with the increment of the skew-angle, the influence of sheltering effects is decreased. In other word, since the sheltering effect of the upstream pier is declined (which reduces the approach velocity for the downstream pier) the scour depth around downstream pier increases. The results show that the maximum scour depth occ

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6

Habib, Ibtesam Abudallah, Wan Hanna Melini Wan Mohtar, Atef Elsaiad, and Ahmed El-Shafie. "Nose-Angle Bridge Piers as Alternative Countermeasures for Local Scour Reduction." Baltic Journal of Road and Bridge Engineering 13, no. 2 (2018): 110–20. http://dx.doi.org/10.7250/bjrbe.2018-13.405.

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This study investigates the performance nose-angle piers as countermeasures for local scour reduction around piers. Four nose angles were studied, i.e., 90°, 70°, 60° and 45° and tested in a laboratory. The sediment size was fixed at 0.39 mm whereas the flow angle of attack (or skew angle) was varied at four angles, i.e., skew angles, i.e., 0°, 10°, 20° and 30°. Scour reduction was clear when decreasing nose angles and reached maximum when the nose angle is 45°. Increasing the flow velocity and skew angle was subsequently increasing the scour profile, both in vertical and transversal direction

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7

Srinivasa, Chikkol Venkateshappa, Yalaburgi Jayadevappa Suresh, and Wooday Puttiah Prema Kumar. "Finite element studies on buckling of laminated cylindrical skew panels." Science and Engineering of Composite Materials 21, no. 4 (2014): 551–58. http://dx.doi.org/10.1515/secm-2013-0204.

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AbstractThe present paper presents the finite element studies made on critical buckling load of isotropic and laminated composite cylindrical skew panels. Analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN. It is found that the CQUAD8 element yields better results compared to the CQUAD4 element in terms of accuracy and convergence. Using the CQUAD8 element, the effects of the panel angle, skew angle, aspect ratio, and length-to-thickness ratio on the critical buckling load of isotropic cylindrical skew panels have been studied. The effects of additional parameters such as fi

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8

Li, Jian Hua, Ping Li, Xiao Dan Li, and Yi Wen Wang. "A Skew Detection Algorithm for PDF417 Based on Feature Point." Applied Mechanics and Materials 128-129 (October 2011): 495–99. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.495.

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The automatic identification of 2D (two dimensional) bar code PDF417 is very sensitive to skew angle, but, the common skew angle detection methods have shortcomings such as weak performance in time complexity. In this paper, based on the properties of PDF417 character code and the extraction of feature points, we get skew angle of PDF417 bar code image using the least square method. Experiments show that this algorithm has virtue of less computation and high accuracy.

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9

Chikkol, Srinivasa Venkateshappa, Prema Kumar Puttiah Wooday, and Suresh Jayadevappa Yelaburgi. "Buckling of laminated composite cylindrical skew panels." Journal of Thermoplastic Composite Materials 30, no. 9 (2015): 1175–99. http://dx.doi.org/10.1177/0892705715618741.

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Experimental studies were made on isotropic cylindrical skew panels made of Aluminum 7075-T6 and laminated composite cylindrical skew panels under uniaxial compression. The experimental values of the critical buckling load ( Pcr) were determined using five different methods. The values of Pcr were also determined using MSC/Nastran and CQUAD8 finite element. The experimental values of the Pcr obtained by different methods were compared with the finite element solution. The effects of the skew angle and aspect ratio on the critical buckling load of isotropic cylindrical skew panels made of Alumi

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10

MISS., KSHITIJA S. BALWAN, V. G. KHURD MR., and S. S. CHOUGULE MR. "TO STUDY THE RESPONSES OF BRIDGE DECK FOR VARIOUS SKEW ANGLES." JournalNX - a Multidisciplinary Peer Reviewed Journal 3, no. 9 (2017): 35–37. https://doi.org/10.5281/zenodo.1420608.

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he objective of this study was to understand the meaning of skew bridge. To know the behavior of skew deck. In this work, the effect of change of skew angles for right bridge deck is studied by finite element method. Bending moment, support reaction and torsional moment are computed by using FEM in CSI BRIDGE and results are compared for different skew angles. Simple supported single span bridge deck is considered for this study. The results by analysis shows that as the skew angle increases, support reaction increases, but bending moment decreases and torsion moment also increases. The effect

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11

Cheng, Li, and Gongping Wu. "A Novel Fast Hierarchical Projection Algorithm for Skew Detection in Multimedia Big Data Environment." International Journal of Mobile Computing and Multimedia Communications 8, no. 3 (2017): 44–65. http://dx.doi.org/10.4018/ijmcmc.2017070104.

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Optical character recognition is an effective way for information input of paper media and skew detection of document images is a key stage of it. An algorithm for skew detection employing hierarchical projection is proposed in this paper. Projection histograms at various directions in a given range are acquired according to an initial angle step length. Then variances of it and absolute difference of the variances are calculated respectively and the angle corresponding to the maximum difference is served as rough skew estimate. The similar work above is implemented in which the projection ang

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12

Hanchate, Ms Ashwini. "Effect of Skew Angles on Longitudinal Girder and Deck Slab of Prestressed Concrete T Beam Girder Bridges." International Journal for Research in Applied Science and Engineering Technology 9, no. 10 (2021): 414–20. http://dx.doi.org/10.22214/ijraset.2021.38432.

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Abstract: The present paper shows the effects of varying skew angles on pre-stressed concrete (PSC) bridges using finite elemental method. Studies are carried out on PSC bridge decks to understand the influence of skew angle and loading on behaviour of bridges. The results of skewed bridges are compared with straight bridges for IRC Class AA Tracked loading. Also, a comparative analysis of the response of skewed PSC Slab Bridge decks with that of equivalent straight bridge decks is made. The variation of maximum longitudinal bending moment (BM), maximum transverse moment, maximum torsional mom

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13

Lu, Ming Qi, and Shao Qin Guo. "Critical Seismic Response Analysis of Skew Bridges." Applied Mechanics and Materials 488-489 (January 2014): 394–97. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.394.

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The complexity of seismic response for skew bridge rises higher seismic-vulnerability relatively in comparison with right bridge. One of the parameters that directly affects the seismic response on a skew bridge is the excitation angle of the ground motion [. This paper investigates the effects of seismic force direction on the responses of skew bridges without considering impact effect in time history nonlinear dynamic analyses. The combination rules for orthogonal earthquake effects, such as the 100/ 30, 100/40 percentage rules and the SRSS method are also examined. It is concluded that the

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14

Kumar, Dhotre Pavan, and Chikkol V. Srinivasa. "Modal Characterization of Sandwich Skew Plates." Acta Mechanica et Automatica 15, no. 3 (2021): 143–53. http://dx.doi.org/10.2478/ama-2021-0019.

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Abstract The current work focuses on the experimental and finite element free vibration studies of laminated composite sandwich skew plates. The comparison was made between the experimental values obtained by the Fast Fourier transform (FFT) analyzer and a finite element solution obtained from CQUAD8 finite element of The MacNeal-Schwendler Corporation (MSC) / NASA STRucture Analysis (NASTRAN) software. The influence of parameters such as aspect ratio (AR) (a/b), skew angle (α), edge condition, laminate stacking sequence, and fiber orientation angle (θ°) on the natural frequencies of sandwich

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15

Chettat, Merouane, Djamel Gaceb, and Soumia Belhadi. "A Fast High Precision Skew Angle Estimation of Digitized Documents." International Arab Journal of Information Technology 17, no. 5 (2020): 825–31. http://dx.doi.org/10.34028/iajit/17/5/16.

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In this paper, we treated the problem of automatic skew angle estimation of scanned documents. The skew of document occurs very often, due to incorrect positioning of the documents or a manipulation error during scanning. This has negative consequences on the steps of automatic analysis and recognition of text. It is therefore essential to verify, before proceeding to these steps, the presence of skew on the document to be processed and to correct it. The difficulty of this verification is associated to the presence of graphic zones, sometimes dominant, that have a considerable impact on the a

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16

Srinivasa, C. V., Y. J. Suresh, and W. P. Prema Kumar. "Finite element studies on free vibration of laminated composite cylindrical skew panels." International Journal of Applied Mechanics and Engineering 19, no. 1 (2014): 165–80. http://dx.doi.org/10.2478/ijame-2014-0012.

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Abstract This paper presents the finite element studies on free vibration of isotropic and laminated composite cylindrical skew panels. The analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN. The effects of the panel angle, skew angle, aspect ratio and length-to-thickness-ratio on fundamental frequency of isotropic cylindrical skew panels are studied. The effects of additional parameters such as the fiber orientation angle, numbers of layers and stacking sequence on the fundamental frequency of antisymmetric composite laminates are also studied. It is found that the CQUAD8 e

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17

Venkateshappa, Srinivasa Chikkol, Suresh Yalaburgi Jayadevappa, and Prema Kumar Wooday Puttiah. "Experimental and finite element studies on buckling of skew plates under uniaxial compression." Science and Engineering of Composite Materials 22, no. 3 (2015): 287–96. http://dx.doi.org/10.1515/secm-2013-0153.

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AbstractExperimental studies were made on isotropic skew plates made of aluminum 7075-T6 and laminated composite skew plates under uniaxial compression with unloaded edges completely free and one loaded edge restrained completely and the other loaded edge restrained except translationally in the direction of loading. Experimental values of the buckling load have been determined using five different methods. The buckling load has also been determined using CQUAD8 finite element of MSC/NASTRAN. Comparison is made between the various experimental values of buckling load and the finite element sol

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18

Hariba, Yoshihito, Shinji Koganezawa, Hiroshi Tani, and Norio Tagawa. "MoP-16 DEVELOPMENT OF SMALL SKEW ANGLE ACTUATOR FOR TDMR." Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment : IIP/ISPS joint MIPE 2015 (2015): _MoP—16–1_—_MoP—16–3_. http://dx.doi.org/10.1299/jsmemipe.2015._mop-16-1_.

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19

Xu, Yiyi, Juin Ming Foong, and Pengfei Liu. "Hydrodynamic Effect of Highly Skewed Horizontal-Axis Tidal Turbine (HATT) Rotors." Energies 16, no. 8 (2023): 3569. http://dx.doi.org/10.3390/en16083569.

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While hydro turbines generate over 40% of the world’s total renewable energy, these traditional turbines present a great environmental concern due to the potential of their sharp blades to damage aquatic lives and ecology, along with their harmful noise and vibration during operation. One effective solution to these environmental issues is to substantially increase the skew of these blades, which would result in a much safer blade operation for aquatic animals (such as fish, etc.) and a substantial reduction in noise and vibration. Adding skew to turbine rotors is known to reduce cavitation an

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20

Zhang, Li Fang, Ying Wang, Ying Ge Lei, and Yun Chang. "Analysis on Live Load Distribution Factors of Widened Hollow Core Slab Bridges." Materials Science Forum 953 (May 2019): 215–22. http://dx.doi.org/10.4028/www.scientific.net/msf.953.215.

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There are some studies on live load distribution factors(LLDF) of hollow core slab bridges which mainly consider the influence of connecting method and rigidity, while the effects of span length and skew angle have not been fully involved. Influenced by the trend of road and river, the hollow core slab bridges are often skewed with rivers. So it is essential to study the span length and skew angle effects in bridge widening. Based on a highway widening project, some representative hollow core slab bridges are selected for widening analysis. Theoretical method and finite element method are used

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21

Dhotre, Pavan Kumar, and C. V. Srinivasa. "On free vibration of laminated skew sandwich plates: A finite element analysis." Nonlinear Engineering 10, no. 1 (2021): 66–76. http://dx.doi.org/10.1515/nleng-2021-0006.

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Abstract The present work emphasizes the determination of the fundamental frequency of skew sandwich plates with orthotropic core and laminated facings using different design parameters. Finite elements CQUAD4 and CQUAD8 of MSC/NASTRAN are used for obtaining fundamental frequencies, which are validated against available literature results. The influence of the skew angle, the ratio of the length-to total thickness (a/h) of the sandwich plate, and the ratio of the thickness of the core to face sheet (t c /t h ) on the fundamental frequency of skew sandwich plates are studied. Also, the influenc

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22

Venkateshappa, Srinivasa Chikkol, Suresh Yalaburgi Jayadevappa, and Premakumar Wooday Puttiah. "Finite Element Studies on Free Vibration of Laminated Composite Cylindrical Skew Panels." Advances in Mechanical Engineering 6 (January 1, 2014): 174085. http://dx.doi.org/10.1155/2014/174085.

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This paper presents the finite element studies made on free vibration of isotropic and laminated composite cylindrical skew panels. A finite element analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN software. The effects of the panel angle, skew angle, aspect ratio, and length-to-thickness-ratio on fundamental natural frequency of vibration of isotropic cylindrical skew panels are studied. The effects of additional parameters such as fiber orientation angle, numbers of layers (keeping total thickness constant), and laminate stacking sequence on the fundamental frequency of

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23

Liu, Xiao Ling, Da Tong Song, and Pei Ran Yang. "On Transient EHL of a Skew Roller Subjected to a Load Impact in Rolling Bearings." Key Engineering Materials 739 (June 2017): 108–19. http://dx.doi.org/10.4028/www.scientific.net/kem.739.108.

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Based on the non-steady state operating condition in machine elements, numerical analysis of a transient elastohydrodynamic lubrication (EHL) finite line contact between a skewed roller and an outer race in cylindrical roller bearings was carried out, and a complete numerical solution of skewed roller pairs EHL under the transient condition was obtained. The effects of the load impact, together with the skewing angle impulses on the lubricating performance of skew roller pairs were discussed. Results show that, different from the steady state, the transient effect of the skew roller lubricatio

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24

Dar, RooufUnNabi, S. M. Anas, and Mehtab Alam. "Effect of Skew Angle on the Dynamic Response of a Reinforced Concrete Bridge under Blast Loading." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 555–61. http://dx.doi.org/10.38208/acp.v1.548.

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Accidental explosions and subversive blasts are on rise. The recent devastating Beirut explosion witnesses this fact. Performance of the structures such as bridges in cities and strategic boarder areas is of paramount importance. With this concern the effect of skew angle on the performance of a single span reinforced concrete (RC) bridge deck supported on three symmetrically placed RC girders under blast loading generated by1000kgTNT charge located above and below the mid-section of the central girder at a standoff distance of 0.5 m has been investigated using ABAQUS/CAE. Analyses have been p

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25

Mandasari, Dewi Rianti, Budi Sudiarto, Lia Amelia, and Asep Andi Suryandi. "Reducing Cogging Torque in V-Shaped BLDC Motors: A FEA Simulation Study on the Impact of Skew Angle." Mekanika: Majalah Ilmiah Mekanika 23, no. 1 (2024): 64. http://dx.doi.org/10.20961/mekanika.v23i1.83242.

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This study thoroughly investigated the impact of stator skew angles on cogging torque in V-shape Brushless Direct Current (BLDC) motors, focusing on electric vehicle applications. Using Finite Element Analysis (FEA) with ANSYS Maxwell, the research assessed how variations in stator core skewness affect torque performance, prioritizing the reduction of cogging torque known for inducing undesirable fluctuations during rotor movement, impacting motor smoothness and noise levels. FEA calculations reveal a significant reduction in cogging torque with the introduction of skew angles to the stator co

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26

Kumar, Manoj, and Mohit Bhamri. "Influence of Skewnesson Flexural Response of RC Slab Bridges." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 563–68. http://dx.doi.org/10.38208/acp.v1.549.

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Normally, straight slab bridges are preferred in any road network due to simplicity in design and construction. However, in some circumstances, it becomes necessary to provide the skew slab bridges owing to geometrical considerations. The structural behaviour of skew slab bridges differs significantly as compared to right slab bridges unless the skew angle is small. In this paper, attempts have been made to investigate the influence of skewness on flexural response of two-lane slab bridges of different spans ranging between 4 m to 8 m at in interval of 1 m and the skew angle has been varied fr

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27

Wu, Zheng-Hai, Ying-Qiang Xu, and Si-Er Deng. "Analysis of Dynamic Characteristics of Grease-Lubricated Tapered Roller Bearings." Shock and Vibration 2018 (November 13, 2018): 1–17. http://dx.doi.org/10.1155/2018/7183042.

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Tapered roller bearings (TRBs) are applied extensively in the field of high-speed trains, machine tools, automobiles, etc. The motion prediction of main components of TRBs under grease lubrication will be beneficial to the design of bearings and the selection of lubricating grease. In this study, considering the dynamic contact relationship among the cage, rollers, and raceways, a multibody contact dynamic model of the TRB was established based on the geometric interaction models and grease lubrication theories. The impacts of load, grease rheological properties, and temperature on the roller

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28

Barberopoulos, A. A., and K. P. Garry. "The effect of skewing on the vorticity produced by an airjet vortex generator." Aeronautical Journal 102, no. 1013 (1998): 171–77. http://dx.doi.org/10.1017/s0001924000065453.

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AbstractThe vorticity production by a single vortex generator jet in a turbulent boundary layer at high speed and zero pressure gradient was studied by analysing surface-flow patterns. The investigation involved a range of jet mass flow rates and skew angles while the freestream Mach number and jet pitch angle were held constant. A qualitative analysis of the skin friction patterns demonstrated the effective role of the skew angle as a bifurcation parameter. The vortex production is classified into three main regimes as the skew angle increases from zero (fully downstream) to 180° (fully upstr

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29

Naik, Pavankumar, and K. Gourav. "Analysis of Skew Bridge-Slab Under IRC Vehicle Loading." IOP Conference Series: Earth and Environmental Science 1130, no. 1 (2023): 012034. http://dx.doi.org/10.1088/1755-1315/1130/1/012034.

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Abstract Skew slab bridges are essential in mountainous areas because topographic restrictions prevented changing the alignment of the road also, crossings of roads and railroads. In simple supported bridges, the effect of skew may typically be ignored up to 15 degrees of skew, and the bridge can be constructed as a right-angled bridge. The behaviour of skew slab bridges more than 15 degrees is complicated hence the study on the behaviour of skew-bridge slab under IRC vehicle loading is carried out. About 70 different deck slab models are analyzed in STAAD Pro software with varying width from

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., Deepak C. "EFFECT OF SKEW ANGLE ON UPLIFT AND DEFLECTION OF RCC SKEW SLAB." International Journal of Research in Engineering and Technology 04, no. 05 (2015): 105–11. http://dx.doi.org/10.15623/ijret.2015.0405020.

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MISS., KSHITIJA S. BALWAN MR. V. G. KHURD MR. S. S. CHOUGULE. "TO STUDY THE RESPONCES OF BRIDGE DECK FOR VARIOUS SKEW ANGLES." JournalNX - A Multidisciplinary Peer Reviewed Journal 3, no. 9 (2018): 35–37. https://doi.org/10.5281/zenodo.1143803.

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The objective of this study was to understand the meaning of skew bridge. To know the behavior of skew deck. In this work, the effect of change of skew angles for right bridge deck is studied by finite element method. Bending moment, support reaction and torsional moment are computed by using FEM in CSI BRIDGE and results are compared for different skew angles. Simple supported single span bridge deck is considered for this study.

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32

Takahashi, Kenshiro, and Chris Gargan-Shingles. "Wake-adapted ducted propeller for full-scale generic underwater vehicle: parametric study on blade skew for unsteady propeller thrust." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 2 (2023): 5545–52. http://dx.doi.org/10.3397/in_2022_0818.

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A parametric study of blade skew for unsteady propeller thrust in the wake of an underwater vehicle (BB2) is presented. Unsteady thrust forces transmit via the propeller shaft and produce undesirable noise and vibration, particularly at frequencies corresponding to multiples of the blade number. The effectiveness of blade skew in reducing noise and vibration has been reported in previous studies, though not for underwater vehicles. The amplitudes of the dominant harmonics of the unsteady propeller thrust are determined using a Fourier series. The balanced skew reduces the dominant fifth harmon

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Arathi, A. R. "Analysis of Critical Gap and Capacity at Skewed Uncontrolled Intersections." European Transport/Trasporti Europei, no. 93 (June 2023): 1–16. http://dx.doi.org/10.48295/et.2023.93.6.

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Critical gaps and capacity of movements at uncontrolled intersections are influenced by intersection geometry, especially in mixed traffic conditions. However, existing models to compute the capacity of uncontrolled base intersections are only suitable for intersections with 00 to 100 skew angles. This study aims to bridge the gap by evaluating the effect of skew angle on the critical gap and capacity of uncontrolled intersections. The critical gap models are developed for different vehicle types. The capacity of uncontrolled intersections is determined for different skew angles (00 to 270) us

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Stefanescu, E., N. Amos, R. Ikkawi, et al. "Perpendicular Recording with Reduced Skew Angle Sensitivity." Journal of Nanoelectronics and Optoelectronics 3, no. 3 (2008): 270–73. http://dx.doi.org/10.1166/jno.2008.304.

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35

Farrow, G. S. D., M. A. Ireton, and C. S. Xydeas. "Detecting the skew angle in document images." Signal Processing: Image Communication 6, no. 2 (1994): 101–14. http://dx.doi.org/10.1016/0923-5965(94)90009-4.

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36

Okun, Oleg, Matti Pietik�inen, and Jaakko Sauvola. "Document skew estimation without angle range restriction." International Journal on Document Analysis and Recognition 2, no. 2-3 (1999): 132–44. http://dx.doi.org/10.1007/s100320050043.

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37

Pal, U., and B. B. Chaudhuri. "An improved document skew angle estimation technique." Pattern Recognition Letters 17, no. 8 (1996): 899–904. http://dx.doi.org/10.1016/0167-8655(96)00042-6.

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38

Martinez, Javier, Klaus Krischan, and Annette Muetze. "Minimization of a SynRel’s oscillating torque by calculation of the appropriate skew angle." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 36, no. 3 (2017): 824–35. http://dx.doi.org/10.1108/compel-09-2016-0403.

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Purpose Synchronous Reluctance (SynRel) motors are known to suffer from excessive torque ripples. The classical way to avoid this drawback of the motor is skewing the slots. This paper aims to provide an analytic estimation of the best skew angle to minimize the ripples in such SynRel motors with tooth windings. The approach used in this paper consists of the minimization of the spectral components of the magnetic energy that cause these oscillation torques. The method was validated by means of a multi-slice finite element model (FEM). Design/methodology/approach An analytic model, based on pe

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Xiang, Yunwen, Zhiqiang Liao, Defeng Kong, and Baozhu Jia. "Analysis of the Effect of the Skewed Rotor on Induction Motor Vibration." Electronics 14, no. 12 (2025): 2374. https://doi.org/10.3390/electronics14122374.

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Induction motors have a simple structure, have low manufacturing costs and are widely used. However, various vibration effects with mechanical or electromagnetic origins are also very common. To analyze the impact of rotor skewing on electromagnetic vibrations in induction motors, this paper investigated the skew factor of skewed rotor slots and proposes an electromagnetic force wave analysis method. The method aimed to optimize the skew angle parameters for vibration amplitude reduction, with its effectiveness verified through simulations and experiments. Taking a 7.5 kW four-pole induction m

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Lu, Ming Qi, Xiang Zong Cao, and Shao Qin Guo. "Translation-Torsion Coupling Analysis on Skew Bridge." Applied Mechanics and Materials 178-181 (May 2012): 2492–96. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2492.

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In the earthquakes, the skew bridge is subjected to bending shear and torsion at the same time, and at present, the studies on it are inadequate at home and abroad. In this paper, the numerical analysis model of the skew bridge was simplified, the effects what the three parameters (including stiffness ratio, skew angle, and eccentricity) make on the dynamic characteristics of skew bridge were obtained by the eigenvalue analysis, and especially, the effects on the translation-torsion coupling vibration of skew bridge and its mechanism were focused on. The results show that the three parameters

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Yang, Ziqi, Chern Kun, Dongliang Meng, and Nawawi Chouw. "Influence of Transient and Partial Footing Separation on the Seismic Response of Skewed Bridges with Soil Support." International Journal of Structural Stability and Dynamics 21, no. 09 (2021): 2150132. http://dx.doi.org/10.1142/s0219455421501327.

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Previous research has shown that the transient and partial footing separation is one of the effective methods to reduce the impact of earthquakes on bridge structures. The separation will not only temporarily stop the transfer of seismic load to structures, but also activate rigid-like body motions of the bridge piers. Most of current investigations involving footing uplift only focused on straight bridges. The influence of skew angle is rarely considered. Even though skewed bridges are common and more vulnerable to seismic load. This work reveals the simultaneous influence of skew angle and f

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Chen, Chao Wei. "Analysis on the Mechanical Behavior of the Pile Base of Integral Abutment Skew Bridge." Applied Mechanics and Materials 275-277 (January 2013): 1203–6. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1203.

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Ansys, the large-scale general FE program, was used to establish computational models of 3×16m-long integral abutment skew bridge with different skew angle to analyze the mechanical characteristics of pile base under the temperature load. Through the analysis of parameters, some helpful conclusions, which would pave the way for further exploration on mechanical behavior of integral abutment skew bridge, were reached.

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Pater, Z. "FEM Analysis of Loads and Torque in a Skew Rolling Process for Producing Axisymmetric Parts." Archives of Metallurgy and Materials 62, no. 1 (2017): 85–90. http://dx.doi.org/10.1515/amm-2017-0011.

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Abstract Skew rolling is a metal forming technique which can be used for producing stepped axles and shafts. This paper investigates seventeen cases of rolling at varying process parameters by the finite element method. As a result, it is possible to determine the effect of the forming angle α, skew angle Θ, linear velocity of the chuck, v, billet temperature, T, rotational speed of the rolls, n, reduction ratio, δ and friction factor, m, on axial load (acting on the chuck), radial load (acting on the roll in the radial direction) and torque. The results will be used when designing a laborator

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Maarefdoust, Mahdi, and Mehran Kadkhodayan. "Nonlinear elastic/plastic buckling analysis of thick/thin skew plates under uniaxial and biaxial loading." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 16 (2014): 2854–67. http://dx.doi.org/10.1177/0954406214564411.

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In this study, elastic/plastic buckling analysis of thick skew plates subjected to uniaxial compression or biaxial compression/tension loading using the generalized differential quadrature method is presented for the first time. The governing differential equations are derived based on the incremental and deformation theories of plasticity and first-order shear deformation theory. The elastic/plastic behavior of the plates is described by the Ramberg–Osgood model. Generalized differential quadrature discretization rules in association with an exact coordinate transformation are simultaneously

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Abdul Salam, Ayisha Sana, and Anila S. "Response of T Beam Bridge by Varying Skew Angle." Journal of Recent Activities in Infrastructure Science 9, no. 2 (2024): 22–26. http://dx.doi.org/10.46610/jorais.2024.v09i02.003.

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Bridges are ensuring the smooth flow of goods and people. The seismic performance of bridges, especially those with unique geometries, such as T-beam bridges with zero skew angles, is paramount in earthquake-prone regions. This project comprehensively analyses a T-beam bridge with a 10⁰ to 50⁰ skew angle. The response of T-beam bridges to varying skew angles is a critical area of study in structural engineering, as skewed bridges are standard in modern infrastructure due to geometric and site constraints. This research investigates the impact of different skew angles on the structural performa

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Li, Sheng Zhi, Wen Hua Meng, Lan Wei Hu, and Bo Ding. "Research on the Tendency of Inner Crack during 3-Roll Skew Rolling Process of Round Billets." Advanced Materials Research 145 (October 2010): 238–42. http://dx.doi.org/10.4028/www.scientific.net/amr.145.238.

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Concerning the 3-roll skew rolling process of round billets, a 3-D thermo-mechanical coupled simulation is performed with the aid of commercial FE code MSC.SuperForm. The influence of the feed angle and inlet cone angle of the roll on the strain and damage filed are investigated. It is found that the distribution pattern of the equivalent plastic strain in the longitudinal section of the billet presents U-shape, and that the feed angle and inlet cone angle of the roll make difference in the gradient of deformation intensity in radial direction of round billet. The ring-shaped distribution of t

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WU, W. X., C. SHU, C. M. WANG, and Y. XIANG. "FREE VIBRATION AND BUCKLING ANALYSIS OF HIGHLY SKEWED PLATES BY LEAST SQUARES-BASED FINITE DIFFERENCE METHOD." International Journal of Structural Stability and Dynamics 10, no. 02 (2010): 225–52. http://dx.doi.org/10.1142/s021945541000349x.

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It is well-known that stress singularities occur at the obtuse corners of skew plates, especially when the skew angles are large. Owing to the stress singularities, accurate bending results, vibration frequencies and buckling loads of highly skewed plates are difficult to obtain accurately. In this paper, the mesh-free least squares-based finite difference (LSFD) method is proposed for solving the free vibration and buckling problems of highly skewed plates. As such vibration and buckling results are scarce in the open literature, the method was verified by comparing the LSFD solutions with ex

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TAJ, M. N. A. GULSHAN, and ANUPAM CHAKRABARTI. "BUCKLING ANALYSIS OF FUNCTIONALLY GRADED SKEW PLATES: AN EFFICIENT FINITE ELEMENT APPROACH." International Journal of Applied Mechanics 05, no. 04 (2013): 1350041. http://dx.doi.org/10.1142/s1758825113500415.

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In the present study, an attempt has been made to present the Co finite element formulation based on third order shear deformation theory for buckling analysis of functionally graded material skew plate under thermo-mechanical environment. Here, prime emphasis has been given to study the influence of skew angle on the buckling behavior of functionally graded plate. Two dissimilar homogenization schemes, namely Mori–Tanaka scheme and Voigt rule of mixture are employed to sketch their influence for the interpretation of data. Temperature-dependent material properties of the constituents of the p

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Kychma, Andrii, Yurii Novitskyi, and Rostyslav Predko. "PROBLEMS OF DRIVE MECHANISMS OF TECHNOLOGICAL SECTION OF FIRING AND GRINDING DURING CEMENT PRODUCTION." Bulletin of the National Technical University «KhPI» Series: Engineering and CAD, no. 2 (December 30, 2021): 44–50. http://dx.doi.org/10.20998/2079-0775.2021.2.07.

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The analysis of conditions of long operation of driving mechanisms of technological sites of firing and grinding at cement production is carried out in the work. Typical variants of mutual arrangement of crown pair elements in case of rectilinear axis of rotation of technological unit body and axial beating of gear ring, as well as variant of mutual arrangement of crown gear elements in case of curved axis of rotation of rotary unit body are considered. A technique for determining the total angle of skew of the teeth of the crown pair, taking into account the errors of manufacture and the rela

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Shakunthala B. S, Ullas H. S, and Pillai C. S. "Recognition of Off-Line Handwritten Kannada Words Using Enhanced Skew Detection and Correction Method." ACS Journal for Science and Engineering 3, S1 (2024): 17–28. http://dx.doi.org/10.34293/acsjse.v3is1.93.

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Handwritten character image is taken as dataset for this method. In the proposed system, extracting text lines, word, charactersand skew correction are done based on Enhanced Skew Detection and Correction for Words algorithm for estimating and correcting skew lines. The algorithm will be used for finding the height andwidth of the entire handwritten word. In case of no skew, minimum valuewill be considered for the height of the wordand maximum value will be considered for the width of the word. Once skew is corrected with approximateskew angle repetition of the same process, only busy zone is

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