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Journal articles on the topic 'Front Roll'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Aizhulov, Daniar, Madina Tungatarova, and Aidarkhan Kaltayev. "Streamlines Based Stochastic Methods and Reactive Transport Simulation Applied to Resource Estimation of Roll-Front Uranium Deposits Exploited by In-Situ Leaching." Minerals 12, no. 10 (2022): 1209. http://dx.doi.org/10.3390/min12101209.

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Roll-front uranium deposits are ore mineralizations that occur in sandstones or arkoses downstream from redox fronts or reduced/oxidized geochemical barriers. They are often bounded above and below by impermeable shaly/muddy layers making them ideal for in-situ leaching exploitation. Several stochastic simulations were previously investigated either to characterize the ore grade distribution within roll-front type deposits, or for describing geological processes involved in their formation. This work suggests some modifications/improvements of conventional geostatistical algorithms for honorin

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Fovell, Robert G. "Convective Initiation ahead of the Sea-Breeze Front." Monthly Weather Review 133, no. 1 (2005): 264–78. http://dx.doi.org/10.1175/mwr-2852.1.

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Abstract In earlier work, a three-dimensional cloud model was used to simulate the interaction between the sea-breeze front (SBF) and front-parallel horizontal convective rolls (HCRs), resulting in the SBF systematically encountering roll updrafts and downdrafts as it progressed inland. Interestingly, deep convection was spawned above an HCR updraft ahead of the SBF as the front approached, well before the inevitable front–roll merger. Ostensibly, both the sea-breeze and roll circulations were required for deep convection to be present in this case at all because convection was entirely absent

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3

Li, Ru Xiong, and Song Hua Jiao. "Roll Forging Technology and 3D Finite Element Simulation of Automobile Front Axle." Applied Mechanics and Materials 178-181 (May 2012): 2845–49. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2845.

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According to the characters, technological condition and requirements of automotive front axle forging, the advantage of the roll forging and integral die forging complex process for automobile front axle were explained, including the determination of roll- forging parts chart, selection of billet dimension, decision of roll- forging steps, special roller- shaped design of typical section, and the front sliding parameter is calculated, its effect to length of forging parts gets analyzed. In this paper, taking NHR front axle as an instance, both the process of exact roll- forging billet and die

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Diky Hadyansah, Mugi Wiguna, and Ali Budiman. "Application of Dominant Movement Patterns in Front Roll Learning." Journal of Physical and Outdoor Education 6, no. 1 (2024): 59–64. http://dx.doi.org/10.37742/jpoe.v6i1.257.

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The low skills of students in learning front roll floor gymnastics in class VI SDN Jaya Mekar are the focus of this research problem. This study aims to determine the effect of the dominant motion pattern approach on front roll floor exercise skills. The method used is experimental research design one group pretest posttest design. The population and sample of this study were all VI grade students of SDN JAYA MEKAR as many as 32 students, sampling using total sampling with a sample of 32 students. The instrument used in this study was a front roll skill test. Data analysis techniques using pai

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Li, Ru Xiong, and Song Hua Jiao. "Thermal Coupled FEM Analysis of Precision Roll Forging Performing of Automobile Front Axle." Advanced Materials Research 557-559 (July 2012): 1330–35. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1330.

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According to the characters, technological condition and requirements of automotive front axle forging, both the process of exact roll-forging billet and die design are studied, as the result, roll- forging die of front axle billet, pre-completed roll-forging die and final roll-forging die are design respectively, finally the groove with hat cross-section is analyzed and top pressure rolling method is proposed during blank-making roll-forging process. The precision rolling forging performing deformation process of automobile front axle is simulated with finite element software Deform-3D by usi

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Li, Ru Xiong, and Song Hua Jiao. "Numerical Simulation for Precision Roll-Forging of Automobile Front Axle." Advanced Materials Research 602-604 (December 2012): 1850–54. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1850.

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Roll forging process for automobile front axle has been simulated by using a rigid viscoplastic finite element method, force-time curve have been obtained and analyzed. On the basis of simulation result, typical characteristics of roll forging process have been explained. It concluded that simulation results could guide the development of roll forging and die design for automobile front axle.

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Fitriastuti, Danti, Wasis Himawanto, and Zainal Afandi. "The Effect of Using Learning Methods on Learning Outcomes Front Roll Viewed from the Flexibility Factor in Class X Students of SMK Negeri Kademangan, 2021." International Journal of Research and Review 10, no. 1 (2023): 599–612. http://dx.doi.org/10.52403/ijrr.20230167.

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The background of this research is the lack of teacher methods in giving instructions or lessons on floor gymnastics, especially the front roll. Many students experience difficulties and injuries when doing the front roll practice. Therefore we need a type of method that can be used to anticipate these problems. One method that can be used is to use video in the learning process of floor gymnastics. In addition, the level of flexibility of students also has an influence on success in doing the front roll. This study will discuss the effect of using the video method in learning floor gymnastics

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dos Reis Benatto, Gisele A., Bérenger Roth, Michael Corazza, et al. "Roll-to-roll printed silver nanowires for increased stability of flexible ITO-free organic solar cell modules." Nanoscale 8, no. 1 (2016): 318–26. http://dx.doi.org/10.1039/c5nr07426f.

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Nikodelis, Thomas, Vassilios Gourgoulis, Afroditi Lola, Ioannis Ntampakis, and Iraklis Kollias. "Front Crawl and Backstroke Sprint Swimming have Distinct Differences along with Similar Patterns Regarding Trunk Rotations." International Journal of Kinesiology and Sports Science 11, no. 3 (2023): 1–7. http://dx.doi.org/10.7575/aiac.ijkss.v.11n.3p.1.

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Background: Front crawl and backstroke share similar trunk rotating characteristics and tempt coaches to transfer teaching parts from one stroke to the other intuitively. However, the degree of similarity has yet to be determined. The coordination of the pelvis and the 7th cervical vertebrae (C7), during yaw and roll rotation, when sprint swimming front crawl, and backstroke was studied. Methods: Thirty-four swimmers were assessed on their performance in25m-sprint of each stroke. Using inertial sensors, each segment’s time series of angular displacement was calculated. Their amplitudes, mean a

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Ng, Chiu-On, and Chiang C. Mei. "Roll waves on a shallow layer of mud modelled as a power-law fluid." Journal of Fluid Mechanics 263 (March 25, 1994): 151–84. http://dx.doi.org/10.1017/s0022112094004064.

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We give a theory of permanent roll waves on a shallow layer of fluid mud which is modelled as a power-law fluid. Based on the long-wave approximation, Kármán's momentum integral method is applied to derive the averaged continuity and the momentum equations. Linearized instability analysis of a uniform flow shows that the growth rate of unstable disturbances increases monotonically with the wavenumber, and therefore is insufficient to suggest a preferred wavelength for the roll wave. Nonlinear roll waves are obtained next as periodic shocks connected by smooth profiles with depth increasing mon

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11

Li, Yong, Chen He, Jiadong Li, Zhaodong Wang, Di Wu, and Guangming Xu. "A Novel Approach to Improve the Microstructure and Mechanical Properties of Al–Mg–Si Aluminum Alloys during Twin-Roll Casting." Materials 13, no. 7 (2020): 1713. http://dx.doi.org/10.3390/ma13071713.

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The main purpose of this present study was to investigate the different processing conditions on the microstructure, segregation behavior of alloying elements, and mechanical properties of Al−Mg−Si alloy twin-roll cast slab prepared using a novel twin-roll casting technology. The simulation of temperature field, distribution of alloying elements, tensile properties, hardness, and conductivity were examined by a Leica optical microscope, scanning electron microscopy, energy dispersion spectroscopy, electron probe microanalysis, and tensile tests. The results indicated that when the traditional

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12

Wardhani, Rio, and Zainal Arifin. "Analysis of Front Roll Movement In Gymnastics: An Inquiry Approach Among Physical Education Students." Physical Activity Journal 5, no. 2 (2024): 169. http://dx.doi.org/10.20884/1.paju.2024.5.2.11839.

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This study describes the analysis of front roll movement skills in students using an inquiry approach, emphasizing active exploration and investigation by students. The research method utilized was quantitative descriptive. The research sample consisted of 63 physical education students from IKIP PGRI Pontianak. The research results indicate that students' activity in performing front roll movements in gymnastics with the inquiry method showed improvement. Initial data showed that for Morning Class A, 19 students, or 63.3% out of 30 students, obtained a Poor Category; for Afternoon Class, 24 s

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Renard, D., and H. Beucher. "3D representations of a uranium roll-front deposit." Applied Earth Science 121, no. 2 (2012): 84–88. http://dx.doi.org/10.1179/1743275812y.0000000011.

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Pratiwi, Anggie Ade, Ranu Baskora Aji Putra, Agus Darmawan, and Bambang Priyono. "Modifikasi Matras Lantai Dalam Pembelajaran Senam Lantai Materi Roll Depan Dan Roll Belakang Bagi Siswa Sma Negeri 3 Semarang Tahun 2022." Indonesian Journal for Physical Education and Sport 3, no. 2 (2022): 424–29. http://dx.doi.org/10.15294/inapes.v3i2.59306.

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Facts on the ground show that at SMA Negeri 3 Semarang, the learning activities of floor gymnastics for the front roll and back roll materials are not much in demand by students. The cause of the low interest of students is because they feel ashamed and afraid, think it is too difficult to do it, and cannot balance the body. It is dominated by female students and students who have fat bodies. From the facts in the field, the researchers created a tilted mattress tool to help students perform front roll and back roll motion skills. This research is a development research, which uses the R

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Mukti, Fiqhri Nugroho, Sunanto Sunanto, Muhammad Thamrin Hidayat, and Rudi Umar Susanto. "PENGARUH PENGGUNAAN MATRAS BIDANG MIRING TERHADAP PENINGKATAN KEMAMPUAN GULING DEPAN PADA MATA PELAJARAN PJOK DI SDN 2 NGLURUP PONOROGO." NUSRA: Jurnal Penelitian dan Ilmu Pendidikan 4, no. 3 (2023): 530–35. http://dx.doi.org/10.55681/nusra.v4i3.1275.

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This study aims to evaluate the improvement of the ability and learning outcomes of the front roll through the application of a modification of the inclined plane mattress tool to students of SDN 2 Nglurup, Sampung District, Ponorogo District. The research was conducted using the Classroom Action Research (PTK) method and involved students in learning floor gymnastics. The results showed that the application of tool modifications for two cycles succeeded in improving students' abilities and learning outcomes in front roll movements. In cycle I, the level of the learning completeness only reach

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16

Winata, Fembi, Widya Handayani, and Siti Ayu Risma Putri. "Anxiety Factors in Doing Floor Gymnastics (Front Roll) for Class V Students Muhammadiyah 18 Palembang Elementary School." Journal of Social Work and Science Education 4, no. 3 (2023): 361–67. http://dx.doi.org/10.52690/jswse.v4i3.568.

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This study aims to determine the anxiety factor in doing floor exercise (front roll) for fifth grade students at SD Muhammadiyah 18 Palembang. The focus of this study was to evaluate the student’s anxiety factor in doing the front roll floor gymnastics who still experience a lot of doubts, or excessive anxiety in doing the front roll movement. This study uses the CIPP model which includes three indicators as follows: context, input, process, product. The interviews included fifth grade students at Muhammadiyah Elementary School and two sports teachers. Direct observation of the school and the

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17

Liu, Jing Zhong, and Fan Jiang. "Study on Influence Analysis of Vehicle Steering Gains Based on ADAMS/Car of Suspension Torsion Bar and Anti-Roll Bar." Applied Mechanics and Materials 278-280 (January 2013): 239–44. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.239.

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In order to study the effect of stiffness of the suspension and anti-roll bar on the vehicle handling performance, and provide reference for suspension design and adjustment afterwards, two virtual prototypes and their variants without anti-roll bar and front suspension assembly anti-roll bar, were structured in ADAMS/Car. Through simulation test with input of steering wheel angle step, the curves of effect of angle stiffness of front suspension torsion bar and anti-roll bar on vehicle steering gain were obtained. On two models, steering gains respectively produced about 20% and 1% decline of

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Mohammad Rozikin, Sasminta Christina Yuli Hartati, and Supriyanto Supriyanto. "Penerapan Media Matras Bidang Miring untuk Meningkatkan Hasil Belajar Guling Depan dan Guling Belakang Kelas X-10 SMAN 1 Gedangan Sidoarjo." PUSTAKA: Jurnal Bahasa dan Pendidikan 4, no. 4 (2024): 134–47. https://doi.org/10.56910/pustaka.v4i4.1728.

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Media is an aid that can help teachers in facilitating students especially in the learning process. The application of media in the learning process must also be adjusted to the purpose and type of media used so that the learning process can run optimally. The problem of in this study is the students feel fear when practicing front roll and back roll. This fear can be an obstacle for students in doing the front roll and back roll movement optimally. In addition, there is also a lack of understanding of the students’ skills of front roll and back roll as well as the residual fear of doing the m

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19

Lee, Allan Y. "Coordinated Control of Steering and Anti-Roll Bars to Alter Vehicle Rollover Tendencies." Journal of Dynamic Systems, Measurement, and Control 124, no. 1 (1998): 127–32. http://dx.doi.org/10.1115/1.1434982.

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A Variable Dynamic Testbed Vehicle is presently being built for the National Highway Traffic Safety Administration. It will have four-wheel steering, front and rear active antiroll bar systems, four adjustable dampers, and other active controls. Using these active devices, we can alter the vehicle’s understeer coefficient, front/rear load transfer distribution in high-g lateral maneuvers, and roll mode frequency and damping. This study investigates how these active systems could be controlled to alter the vehicle rollover tendencies. In particular, we study how an increased front antiroll bar

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20

Kesavan Panjavarnam, Mark Ovinis, and Saravanan Karupanan. "A New Roll and Pitch Control Mechanism for an Underwater Glider." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 85, no. 1 (2021): 143–60. http://dx.doi.org/10.37934/arfmts.85.1.143160.

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In this paper, a new roll and pitch control mechanism for an underwater glider is described. The mechanism controls the glider’s pitch and roll without the use of a conventional buoyancy engine or movable mass. The mechanism uses water as trim mass, with a high flow rate water pump to shift water from water bladders located at the front, rear, left, and right of the glider. By shifting water from the left water bladder to the right water bladder, a roll moment is induced. Similarly, pitch is achieved by controlling the water flow between the front and rear water bladder using a water pump. The

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21

Posey-Dowty, J., E. Axtmann, David A. Crerar, Maria P. Borcsik, A. Ronk, and W. Woods. "Dissolution rate of uraninite and uranium roll-front ores." Economic Geology 82, no. 1 (1987): 184–94. http://dx.doi.org/10.2113/gsecongeo.82.1.184.

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22

Chen, Tsing-Chang, Ming-Cheng Yen, Shih-Yu Wang, and Raymond W. Arritt. "Roll Clouds Associated with an East Asian Cold Front." Bulletin of the American Meteorological Society 80, no. 11 (1999): 2199–208. http://dx.doi.org/10.1175/1520-0477(1999)080<2199:rcawae>2.0.co;2.

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Turgunov, Komil, and Akhror Abdullaev. "Study on equations of curves of the squeezing machines’ contact of rolls." E3S Web of Conferences 434 (2023): 02010. http://dx.doi.org/10.1051/e3sconf/202343402010.

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This study deals with the issues of mathematical modeling of curves of contact of rolls of squeezing machines. The paper deals with the issues of mathematical modeling of curves of contact of rolls of squeezing machines. Equations are obtained the of curves contact of the rolls of the squeezing machine, in which the upper roll is mixed relative to the lower roll towards the movement of the processed material, the processed material is fed so that the line, which is a continuation of its front end, passes through the axis of rotation of the upper roll. It was been established that the contact c

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Chen, Dyi Cheng. "Rigid-Plastic Finite Element Simulation of Deformation Mechanisms during Rolling of Complex Sheets Containing an Inclusion." Key Engineering Materials 306-308 (March 2006): 483–88. http://dx.doi.org/10.4028/www.scientific.net/kem.306-308.483.

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Using rigid-plastic finite element DEFORMTM 2D software, this study simulates the plastic deformation of complex sheets at the roll gap during the sheet rolling process. Specifically, the study addresses the deformation of complex sheets containing inclusion defects. Under various rolling conditions, the present numerical analysis investigates the damage factor distributions, the void length at the front and rear of the inclusion, the deformation mechanisms, and the stress-strain distributions around the inclusion. The relative influences of the thickness reduction, the roll radii, and the fri

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Park, B. H., and S. M. Hwang. "Analysis of Front End Bending in Plate Rolling by The Finite Element Method." Journal of Manufacturing Science and Engineering 119, no. 3 (1997): 314–23. http://dx.doi.org/10.1115/1.2831109.

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This paper deals with the problem of the front end bending arising in plate rolling. The problem, which is caused by unbalanced rolling, is investigated by the finite element simulation technique. Discussions are made on the effect of various unbalanced rolling conditions on the deformation of the front end. In particular, an empirical model is developed for the prediction of the curvature of the front end rolled under the presence of the roll speed difference.

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Men, Yu Zhuo, Hai Bo Yu, and Xian Sheng Li. "Roll Stability Model of Lateral Load Transfer of Passenger Vehicle." Applied Mechanics and Materials 241-244 (December 2012): 2019–22. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.2019.

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In order to research the influence of lateral load transfer on the roll stability of passenger vehicle, the dynamics simulation model is established. Pass through simulation, the influence of the passenger vehicle structural parameters and speed on its roll stability is analyzed. The research result shows that, the passenger vehicle rear wheel drive axle is risky for roll stability; it will first lift off when the speed is too high or the front wheel angle is too big. The roll stability of passenger vehicle can be effectively improved by increasing the wheel spread and wheelbase, lowering spru

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Ramadhani, Naufal Fajri, Citra Resita, Citra Resita, Aria Kusuma Yuda, and Aria Kusuma Yuda. "STUDENTS' LEVEL OF CONFIDENCE IN LEARNING FRONT ROLL FLOOR GYMNASTICS AT 1 PURWADADI STATE HIGH SCHOOL." Journal Physical Education, Health and Recreation 7, no. 1 (2022): 33. http://dx.doi.org/10.24114/pjkr.v7i1.39156.

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Naufal Fajri Ramadhani with the research title "Students' Level of Confidence in Learning Front Roll Floor Gymnastics at 1 Purwadadi State High School 1". Physical Education, Health and Recreation Study Program. Faculty of Teacher Training and Education. Singaperbangsa Karawang University.This study aims to determine how high students' confidence in learning front roll floor gymnastics at 1 Purwadadi State High School is in the 2022/2023 teaching. This study uses an approach when viewed from the type of research data presented. The method in this is a survey research using a questionnaire. The

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Hardiansyah, Fernanda. "Upaya Meningkatkan Kemampuan Senam Lantai Guling Depan Dengan Menggunakan Metode Pendekatan Jigsaw Pada Siswa Kelas IX C SMP Negeri 22 Semarang Tahun Pelajaran 2023/2024." Jurnal Riset Sosial Humaniora dan Pendidikan 3, no. 2 (2024): 10–29. http://dx.doi.org/10.56444/soshumdik.v3i2.1604.

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This research was conducted to overcome the unmet criteria for completeness in learning front-rolling gymnastics in class IX C SMP N 22 Semarang. This research aimed to improve the learning of front rolling through the Jigsaw approach in class IX C SMP N 22 Semarang. This research is a classroom action research consisting of two cycles, each consisting of two meetings. The research subjects were 33 students of class IX C SMP N 22 Semarang (14 boys and 19 girls). The data collection instruments used include observation, questionnaire, and front roll learning outcomes test. Data analysis techniq

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Seelam, Anil Babu, Ayub Khan Aaqif Ahmed, and Krishnamurthy H. Sachidananda. "Buggy Role Cage – Analysis and Design." International Journal of Safety and Security Engineering 10, no. 5 (2020): 589–99. http://dx.doi.org/10.18280/ijsse.100502.

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Design and analysis of Buggy roll cage commonly used as a recreational vehicle on off road terrains have been studied. These vehicles are usually modified from their existing design to provide performance and safety. In this research paper, an attempt has been made to design a roll cage for a buggy considering different members of the roll cage. In this context roll cage has been drawn on solid works CAD software and has been analyzed using finite analysis by applying the different boundary conditions. The roll cage has been designed considering the AISI 4130 steel and carbon fiber considering

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Yanai, Toshimasa. "What Causes the Body to Roll in Front-Crawl Swimming?" Journal of Applied Biomechanics 17, no. 1 (2001): 28–42. http://dx.doi.org/10.1123/jab.17.1.28.

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This study was conducted to describe the kinematics of bodyroll and investigate whether bodyroll was propelled primarily by the turning effect of the fluid forces (external torque) or by the reaction effect due to the acceleration of the limbs. The performances of 11 competitive swimmers were recorded using two panning periscopes, and the three-dimensional movement of the subjects was reconstructed from digitized video recordings. The external torque acting on the whole body was determined as the first time-derivative of the angular momentum of the whole body. The reaction effect of limb accel

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Krisna, Dewa Ketut. "Application of the PBL (Problem-Based Learning) Learning Model in Improving Front Roll Floor Gymnastics Ability at Class VII of SMPN 3 Gerung for the 2023-2024 academic year." JUPE : Jurnal Pendidikan Mandala 9, no. 1 (2024): 111. http://dx.doi.org/10.58258/jupe.v9i1.6748.

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The PBL Learning Model is a learning approach that is student-centered and focuses on problem solving. In the context of floor exercise abilities, especially the front roll sub-material. The approach used to improve front roll ability is Problem Based Learning (PBL). By using this approach, students are expected to be able to learn independently to find out good techniques through collaboration between their respective groups. So, from the overall process in this research, the total knowledge results were 2,060, the average knowledge was 79.2, the number of students who completed the study was

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Barden, John M., and Mike V. Barber. "The Effect of Breathing Laterality on Hip Roll Kinematics in Submaximal Front Crawl Swimming." Sensors 22, no. 6 (2022): 2324. http://dx.doi.org/10.3390/s22062324.

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The purpose of this study was to determine the effect of breathing laterality on hip roll kinematics in submaximal front crawl swimming. Eighteen elite competitive swimmers performed three 100 m front crawl trials at a consistent sub-maximal speed (70% of seasonal best time) in a 25 m pool. Each trial was performed with one of three different breathing conditions: (1) unilateral breathing (preferred side), (2) bilateral breathing (alternating left/right-side every 3 strokes) and (3) simulated non-breathing using a swim snorkel. A waist-mounted triaxial accelerometer was used to determine conti

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Isaevich, L. A., A. D. Kritsky, D. M. Ivanickij, and M. I. Sidorenko. "Strength analysis of banded roll for asymmetric rolling of few-leaf springs." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 3 (October 5, 2018): 101–9. http://dx.doi.org/10.21122/1683-6065-2018-3-101-109.

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The nominal rotational torque on the rolls during asymmetric rolling of a strip of few-leaf springs was calculated. To stabilize the rolling process it was proposed to use a front tension and a minimum value of such tension was computed. Misalignment of the circumferential speeds of the driving and driven rolls are calculated. The design of a composite banded roll with two tabs on the bandage and the two grooves on the shaft are proposed. In addition, the mating surfaces of the shaft and the shroud are made in the form of a Morse cone, which facilitates the repair of the roll and provides a ti

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Zhou, Ying. "Coupled Fluid-Thermal Finite Element Analysis of Droplike-Shape-Spacer Nozzle’s Fluid Field of Al Roll-Casting." Advanced Materials Research 129-131 (August 2010): 640–44. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.640.

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A three-dimensional finite element simulation model of fluid field including front-box and droplike-shape-spacer nozzle of aluminum roll-casting has been developed to provide analyzing distribution of velocity and temperature of outlet of nozzle. The computation was performed by using coupled fluid-thermal FEM simulation of FLOTRAN module in ANSYS 6.0. The boundary conditions of the roll-casting model of fluid and thermal fields, were loaded on front-box and nozzle. Based on the data from postprocessing function of ANSYS, the strict result analysis was conducted by MATLAB. Results based on the

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Zhou, Ying. "Effect of Velocity of Fluid Field of 3-Spacer Nozzle in Roll-Casting Models Using Coupled Fluid-Thermal Finite Element Analysis." Applied Mechanics and Materials 29-32 (August 2010): 1481–87. http://dx.doi.org/10.4028/www.scientific.net/amm.29-32.1481.

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A finite element model of fluid field of front-box and 3-spacer nozzle of aluminum roll-casting has been developed to provide a comparison of analyzing distribution of velocity and temperature of outlet of nozzle with variable velocity. The computation is performed by using coupled fluid-thermal FEM simulation of FLOTRAN module in ANSYS 6.0. The boundary conditions of the roll-casting model of fluid and thermal fields, were loaded on front-box and nozzle. Based on the postprocessing function of ANSYS, the strict result analysis was conducted by MATLAB. Results based on the allowable inhomogene

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Jiang, Peng. "NUMERICAL SIMULATION FOR PRECISION ROLL FORGING OF AUTOMOBILE FRONT AXLE." Chinese Journal of Mechanical Engineering 41, no. 06 (2005): 123. http://dx.doi.org/10.3901/jme.2005.06.123.

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Weng, Wen Ping, Kang Deng, Zhong Ming Ren, Qi Chen, Zhi Dong Chi, and Qi Te Zhao. "Kiss-Point Position Control of Solidification Layer and Process Optimization for Twin-Roll Casting of Magnesium Alloys." Advanced Materials Research 189-193 (February 2011): 3844–51. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3844.

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The solidification and process optimization for twin-roll casting of magnesium alloys have been studied. Effects of roll speed, roller diameter, setback length and strip thickness on the position of the solidification front and the surface quality of strip were analyzed through experiments. A kiss-point model which considers the strip thickness, set-back length and roll speed was established to optimize process and enhance the surface quality of magnesium alloy strip. Results showed that the twin-roll casting process could be effectively stabilized and optimized under the direction of the mode

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Gawai, Aayush, Prathmesh Deshmukh, Sailee Achrekar, Shruti Kaklij, and Anuprita Tikle. "A Project Report on Optimization of an Off Road Vehicle Ergonomics." International Journal for Research in Applied Science and Engineering Technology 11, no. 4 (2023): 1161–70. http://dx.doi.org/10.22214/ijraset.2023.50231.

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Abstract: This paper contain the behaviour of A BAJA vehicle chassis which undergo the various load test like’’Front impact test, Side impact test, Rear impact test, Roll over impact”all the analysis of the test has been performed with the help of ANSYS WORKBENCH 18.1,where maximum deformation ,stress and strain calculated over duration of the particular impact.For the theoretical calculation we have use the INELASTIC COLLISION THEORY with this we have applied a force at a point .The boundary conditions and loading use different methodology. Study of ergonomics which help to give the ergonomic

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Grande, Louis Del, and Neil Ross. "Sanity Clause." Canadian Theatre Review 81 (December 1994): 59–85. http://dx.doi.org/10.3138/ctr.81.014.

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Iqbal, Muhammad. "Increasing Front Rolls Learning Outcomes Through the Use of Learning Assistance Media." Journal on Education 4, no. 3 (2022): 1001–6. http://dx.doi.org/10.31004/joe.v4i3.509.

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This research uses Classroom Action Research (CAR). The data sources in this study were all seventh-grade students of Cawang Baru Junior High School Jakarta for the 2019/2020 Academic Year. The subjects of this research were the seventh-grade students of SMP Cawang Baru Jakarta for the Academic Year 2019/2020 totaling 22 people, consisting of 12 male students and 10 female students. Data collection techniques are through tests and observations of the process of learning activities. The data analysis technique used in this research is descriptively based on qualitative analysis. The procedure o

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Pang, Yu Hua, Yang Lei Hu, Qi Sun, et al. "Front End Bending in Plate Rolling Influenced by Asymmetrical Entrance Angle." Materials Science Forum 658 (July 2010): 436–39. http://dx.doi.org/10.4028/www.scientific.net/msf.658.436.

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Material rolled in heavy plate mills and roughing stands often bends upwards or downwards. This phenomenon can lead to poor shape, profile and quality of the product, as well as lower productivity. This paper focuses on the well- known bending due to the related asymmetrical entrance angle between the rolling stock and work roll which can easily cause asymmetrical shape factor in deformation zone. A model for calculating curvature quickly is deduced based on the condition of asymmetrical entrance angle. Results show that the front end bending can occur easily due to the asymmetrical entrance a

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Skyllingstad, Eric D., and Roger M. Samelson. "Instability Processes in Simulated Finite-Width Ocean Fronts." Journal of Physical Oceanography 50, no. 9 (2020): 2781–96. http://dx.doi.org/10.1175/jpo-d-20-0030.1.

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AbstractA simple, isolated front is modeled using a turbulence resolving, large-eddy simulation (LES) to examine the generation of instabilities and inertial oscillations by surface fluxes. Both surface cooling and surface wind stress are considered. Coherent roll instabilities with 200–300-m horizontal scale form rapidly within the front after the onset of surface forcing. With weak surface cooling and no wind, the roll axis aligns with the front, yielding results that are equivalent to previous constant gradient symmetric instability cases. After ~1 day, the symmetric modes transform into ba

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Li, Xuefei, Jian Li, Lida Su, and Yue Cao. "Control Methods for Roll Instability of Articulated Steering Vehicles." Mathematical Problems in Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/8041816.

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This study examines the control methods for roll instability of articulated steering vehicles (ASVs) by taking wheel loaders as the research object. An eight-degrees-of-freedom nonlinear dynamics model of ASVs was built on the basis of multibody dynamics. Three methods, namely, active braking (the front and rear axles have the same braking torque), active steering, and adjusting the swing bridge (applying a control torque between the rear body and rear axle), were adopted to analyze the effects on the roll stability of ASVs through the dynamic model. The results show that active braking is con

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Yin, Yuan De, Meng Jun Wang, Sheng Zhi Li, Peng Zhan Wang, Xiang Dong Wang, and Guo Tao Li. "Influence of Roll Rotational Speed on inside Bore and Lamination Defects in Rotary Piercing Large Diameter Heavy Wall P92 Steel Pipe Process." Applied Mechanics and Materials 421 (September 2013): 205–11. http://dx.doi.org/10.4028/www.scientific.net/amm.421.205.

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To investigate the influence of different roll rotational speeds on tendency of inside bore and lamination defects of large diameter heavy wall seamless P92 (9Cr-0.5Mo-1.8WVNb) steel pipe pierced by two-high rotary piercing process, with the aid of commercial FE code MSC. SuperForm, 3D thermo-mechanical coupled simulations were presented. The damage field of the rolled piece during rotary piercing process, and the tendency of forming inside bore and lamination defects were analyzed using Oyane ductile fracture criterion. The results show that When roll rotational speed increases from 7rpm to 1

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Andersen, Jordan T., Peter J. Sinclair, Carla B. McCabe, and Ross H. Sanders. "Kinematic Differences in Shoulder Roll and Hip Roll at Different Front Crawl Speeds in National Level Swimmers." Journal of Strength and Conditioning Research 34, no. 1 (2020): 20–25. http://dx.doi.org/10.1519/jsc.0000000000003281.

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Hassan, Mohamed A., Mohamed AA Abdelkareem, Gangfeng Tan, and M. M. Moheyeldein. "A Monte Carlo Parametric Sensitivity Analysis of Automobile Handling, Comfort, and Stability." Shock and Vibration 2021 (September 6, 2021): 1–24. http://dx.doi.org/10.1155/2021/6638965.

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This paper investigates the bandwidth sensitivity of automobile handling, comfort, and stability based on Monte Carlo sensitivity simulations. Performed bandwidth sensitivity simulations include the effects of vehicle geometry and suspension parameters on lateral acceleration, roll angle, front/rear sideslip angles, and yaw rate angle, including both time- and frequency-domain sensitivity analyses. To replicate actual automobile responses, a full-vehicle roll-oriented suspension seven-degree-of-freedom (7-DOF) model was developed and implemented considering a 2-DOF planar two-track model with

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Vdovin, Konstantin N., Igor M. Yachikov, and Kirill A. Danilyuk. "Model for Solidification of the Working Layer of the Roll in the Chill of the Centrifugal Machine." Materials Science Forum 946 (February 2019): 702–8. http://dx.doi.org/10.4028/www.scientific.net/msf.946.702.

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The paper presents a mathematical model and the elements of a computer program for calculation and visualization of solidification of the rotating molten iron of the working layer of the roll in the centrifugal machine. We established the dynamics of changes in supply rate of carbide nanopowder feeding on the surface of the molten metal, provided its uniform distribution along the solidifying layer of the cast iron. It is shown that the working layer of the iron cools sideways and more intensively from the side of the chill mould; the areas, which are located near it, are the first to reach th

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Shubham, Kolhe *. Vrushabh U. Joijode. "ROLL CAGE DESIGN AND ANALYSIS FOR FORMULA STUDENT RACE CAR." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 7 (2016): 717–32. https://doi.org/10.5281/zenodo.57664.

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This paper deals with the Design and Analysis of Roll Cage for the Formula Student Car. In a Formula Student Car the roll cage is one of the main components. It form the structure or the main frame of the vehicle on which other parts like Engine, Steering, and Transmission are mounted. Roll Cage comes under the sprung mass of the Vehicle. There are a lot of forces acting on vehicle in the running condition. These forces are responsible for causing crack initiation and deformation in the vehicle. Deformation results in Stress Generation in the Roll Cage. Hence it is important to find out these

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Gao, Jin Gang, Shuang Zhang, and Hua Wang. "Key Technology Research on Rimming Fixture Design." Applied Mechanics and Materials 271-272 (December 2012): 986–90. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.986.

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The role the rimming fixture is to ensure the models and the front cover having no relative motion in rolling process, and quality of fixture layout can influence if the cover edge has quality defects such as undulated in rimming process. First, this paper analyzes composition of the rimming bottom die and positioning clamping mechanism in rimming fixture, and obtains stressed situation of front cover edge under the action of rimming and stamping by the roll head by using the result of finite element analysis to the rimming process of front cover, combining with the design requirement of proce

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Pang, Yu Hua, Yang Lei Hu, Qi Sun, and Chang Rui Liu. "Influence of Surface Friction Mismatch on Front End Bending during Plate Rolling." Advanced Materials Research 97-101 (March 2010): 597–600. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.597.

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Asymmetrical conditions that occur during plate rolling can cause front end bending or lead to poor product shape, profile, quality and cause reduced productivity. In these investigations, a model of calculating curvature is deduced according to the theory of rolling, which has been used to determine the effect of surface friction mismatch on the direction and severity of curvature in plate rolling. Results show that the front end bending can occur easily due to the mismatch of coefficient of friction. Moreover, the results have identified that the bending inclination of large reduction, large

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