Relevant bibliographies by topics / Static friction force

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Static friction force'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Static friction force"

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Pluta, Zdzisław, and Tadeusz Hryniewicz. "Adequate Force Characteristics of a Friction System." International Letters of Chemistry, Physics and Astronomy 13 (September 2013): 20–36. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.13.20.

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In the paper, at first some remarks concerning friction are presented by the definition of the friction itself, as well as its essential force characteristics. An adequate definition of friction is introduced, and moreover a correct its characteristics. Next the statics, dynamics, and kinematics of the friction system is given, forming the force characteristics of this system for each of the mechanical behaviours, taking into account real inertia forces of the body under friction. Three types of coefficients of sliding friction have been separated, namely: coefficient of static friction, dynam
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Pluta, Zdzisław, and Tadeusz Hryniewicz. "Adequate Force Characteristics of a Friction System." International Letters of Chemistry, Physics and Astronomy 13 (May 3, 2013): 20–36. http://dx.doi.org/10.56431/p-12f95e.

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In the paper, at first some remarks concerning friction are presented by the definition of the friction itself, as well as its essential force characteristics. An adequate definition of friction is introduced, and moreover a correct its characteristics. Next the statics, dynamics, and kinematics of the friction system is given, forming the force characteristics of this system for each of the mechanical behaviours, taking into account real inertia forces of the body under friction. Three types of coefficients of sliding friction have been separated, namely: coefficient of static friction, dynam
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Bai, Shaoxian, Tao Wang, and Jing Yang. "An Experiment on the Dwell Time Effect of Rubber Seal O-Rings: Friction Force in Intermittent Reciprocating Motion." Materials 17, no. 10 (2024): 2427. http://dx.doi.org/10.3390/ma17102427.

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The adhesive force between two contact surfaces often leads to an increase in the friction force of the rubber seal O-ring after a certain dwell time, forming dwell time effects and affecting the reliability of sealing. The dwell time effect may result in substantial instability with respect to the frictional behavior of rubber O-rings, which needs to be carefully taken into account in the design of rubber seals. Therefore, in this paper, the dwell time effect of the friction force was studied experimentally for intermittent reciprocating rubber seal O-rings coupled with stainless steel 316L a
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Khairaliyev, S. "STATIC INTERACTION OF ROUGH SURFACES UNDER NORMAL FORCE." Eurasian Physical Technical Journal 17, no. 2 (2020): 110–15. http://dx.doi.org/10.31489/2020no2/110-115.

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Modern mechanical engineering designs (and some others) make more and more demands on the development of mathematical models of units in which friction is present. A condition that significantly complicates the study of the properties of a frictional contact is its discreteness with different geometric parameters of two contacting bodies, as a result of which the contact is formed only between a part of the roughness of the rubbing bodies (base and slide). The geometry of the contacting surfaces can most accurately be described by random functions, however, methods for calculating friction nod
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Kim, Kwang-Mo, Dong-Hyeon Gim, Jeong-Hun Kim, and Ju-Seok Nam. "Improved Prediction Model for Maximum Static Friction Force of Agricultural Tractor with Front-End Loader on Paved Road." Journal of Agricultural Safety and Health 31, no. 2 (2025): 133–50. https://doi.org/10.13031/jash.16100.

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HighlightsThe friction force is one of the important influence factors on tire slip, overturning, and rollover characteristics of tractors.The maximum static friction forces of three different tractors were measured on paved roads under various loading conditions.The prediction models of the previous study were improved through regression analysis for the measured data.The model that uses the front and rear axle’s reaction forces as variables showed the highest prediction accuracy.Abstract. The overturning and rollover safety of a tractor located on a slope is decreased by tire slip, which is
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Opałka, Mariusz, Wojciech Wieleba, and Angelika Radzińska. "INFLUENCE OF THE DYNAMICS OF FORCED MOTION ON THE STATIC FRICTION IN METAL-POLYMER SLIDING PAIRS." Tribologia 295, no. 1 (2021): 21–26. http://dx.doi.org/10.5604/01.3001.0015.4897.

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The resistance during the frictional interaction of polymeric materials with metallic materials is characterized by a significant dependence on the dynamics of the motion inputs. In a metal-polymer friction pair, the static friction resistance during standstill under load depends on the rate of growth of the force causing the relative motion. Tribological tests of selected (polymer-metal) sliding pairs were carried out. The selected polymers were polyurethane (TPU), polysulfone (PSU), and silicone rubber (SI). They interacted with a pin made of normalized C45 steel under unitary pressure p = 0
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Wang, Zeyuan, Peng Feng, Shi Cheng, and Tao Yu. "Friction measurement and correction method in quasi-static tests of columns under combined axial and cyclic lateral loading." Advances in Structural Engineering 22, no. 12 (2019): 2672–86. http://dx.doi.org/10.1177/1369433219849873.

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In quasi-static tests of large-scale structural columns and/or columns under large axial loads, the lateral friction force between the column and the loading system can become a significant problem: they may cause considerable deviation between the measured lateral force and the actual reaction force of the column, especially under large axial compression load. Many researchers have come up with different methods to reduce or eliminate the influence of such friction force. In this article, previous treatments on the lateral friction force in quasi-static tests are first discussed. A shear forc
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Downing, Alison, John McCabe, and Peter Gordon. "A Study of Frictional Forces between Orthodontic Brackets and Archwires." British Journal of Orthodontics 21, no. 4 (1994): 349–57. http://dx.doi.org/10.1179/bjo.21.4.349.

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The differences in magnitude of static and kinetic frictional forces generated by 0·022 × 0·030-inch stainless steel (Dentaurum®) and polycrystalline ceramic (Transcend®) brackets in combinntion with archwires of different sizes (0·018 inch and 0·019 × 0·025 inch) and materials (stainless steel, nickel-titanium, and beta-titanium) at a constant ligature force were investigated. A friction-testing assembly using the Instron machine was used. In all cases, the static frictional force was greater than the kinetic frictional force. There were no significant differences in the frictional forces gen
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Cross, Rod. "Static friction on the feet." Physics Education 60, no. 3 (2025): 033003. https://doi.org/10.1088/1361-6552/adb92a.

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Abstract The friction force on the feet when walking is a static friction force. Despite the fact that the foot on the ground remains at rest, the friction force does work to propel the walker forward.
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Li, Xue Feng, Chu Wu, Shao Xian Peng, and Jian Li. "AFM Interaction Forces of Lubricity Materials Surface." Advanced Materials Research 528 (June 2012): 95–98. http://dx.doi.org/10.4028/www.scientific.net/amr.528.95.

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Micro interaction forces of lubricity surface of silicon and mica were studied using atomic force microscopy (AFM). From different scanning angle and bisection distance of the AFM, a new method of measuring micro static friction of lubricity surface materials was investigated. Results show that the micro coefficients of static and sliding friction of mica are less than the silicon, but the adhesive force is bigger. The mechanism of friction force of the two lubricity materials was discussed.
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Dissertations / Theses on the topic "Static friction force"

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Kinsella, Mary E. "Ejection forces and static friction coefficients for rapid tooled injection mold inserts." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1092660338.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xvi, 206 p.; also includes graphics (some col.). Includes bibliographical references (p. 167-173). Available online via OhioLINK's ETD Center
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Логвиненко, Д. Т. "Синергетична модель розм’якшення поверхні льоду при терті з врахуванням просторової неоднорідності деформації, напружень та температури". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86522.

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Модель представлена системою трьох одновимірних диференціальних параболічних рівнянь в частинних похідних. На основі явної двошарової різницевої схеми записаний аналітичний вид чисельної процедури розв’язання рівнянь, включаючи початкові і граничні умови. Побудовано розподіли поточних і стаціонарних значень статичної сили тертя, кінетичної сили тертя та температури. Розглядались два випадки: 1) верхня і нижня поверхні рухаються з рівними за величиною швидкостями у протилежних напрямках; 2) верхня поверхня зсувається по нерухомій нижній. Визначено залежності напружень, деформації та температури
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Le, Meur Kevin. "Etude du procédé d'estampage de plaques composites thermo-plastiques et recherche d'une méthodologie efficiente pour l'analyse de la faisabilité d'une pièce complexe." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0115.

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Le procédé de thermo-estampage est une voie intéressante pour la production en grande série de pièces composites. Cependant ce procédé est complexe à maitriser et simuler, en raison des phénomènes multi-physiques mis en jeu (déformation textiles, choc thermique, frottements...) ce qui engendre des campagnes par essai-erreurs qui peuvent être très coûteuses. Cette étude s'intéresse à la mesure et à la caractérisation du procédé d'estampage et des matériaux utilisés afin de simuler le refroidissement de la matrice et la mise en forme du textile. Des défauts récurrents sont évoqués ainsi que des
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chia, Chang yu, and 張育嘉. "Single stone static friction force estimates equations of the dry masonry breast wall." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/07085313861329580085.

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碩士<br>中華大學<br>土木工程學系碩士班<br>93<br>The masonry working method is the most natural thoughts to construct earth retaining structures with the considering of ecological work. However, there is not yet any appropriate mechanic method to analyze the masonry structure. So this study is going to counter the dry masonry breast wall of the river revetment engineering, attempt to observe the mechanical behavior. Simulates the vertical and incline direction dry masonry breast wall by the boulder, first classifies the receives the pressure model of the various boulder spheroid, and computation boulder spher
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Books on the topic "Static friction force"

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Heithaus, Robert Evans, Almas Syed, and Chet R. Rees. Slow and Steady Method for Advancing Devices Through Tight or Tortuous Anatomy. Edited by S. Lowell Kahn, Bulent Arslan, and Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0059.

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Advancing vascular sheaths, catheters, balloons, stent grafts, or drainage catheters can prove difficult in tight or tortuous anatomy, leading to prolonged procedure and fluoroscopy time. Overcoming the static forces of friction requires greater magnitude of force compared to the kinetic forces of friction. Static forces of friction can result in catheter or device kinking, particularly in tight or tortuous anatomy. By applying slow, steady force (as opposed to multiple isolated applications of force) in a manner described in this chapter, one can advance a device in a slow and steady manner,
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Routh, Edward John. Treatise on Analytical Statics: The Parallelogram of Forces. Forces Acting at a Point. Parallel Forces. Forces in Two Dimensions. on Friction. the Principle of Work. Forces in Three Dimensions. Graphical Statics. Centre of Gravity. on Strings. Creative Media Partners, LLC, 2023.

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Isenberg, David. Shadow Force. Greenwood Publishing Group, Inc., 2008. http://dx.doi.org/10.5040/9798216013839.

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From their limited use in China during World War II, for example, to their often clandestine use in Vietnam ferrying supplies before the war escalated in 1964 and 1965 when their role became more prominent-and public-private military contractors (PMCs) have played made essential contributions to the success and failures of the military and United States. Today, with an emphasis on force restructuring mandated by the Pentagon, the role of PMCs, and their impact on policy-making decisions is at an all time peak. This work analyzes that impact, focusing specifically on PMCs in Iraq since the fall
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Watts, Barry D. The Foundations of U.S. Air Doctrine: The Problem of Friction in War. Government Reprints Press, 2001.

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Watts, Barry D. The Foundations of Us Air Doctrine: The Problem of Friction in War. University Press of the Pacific, 2001.

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Fifty Shades of Friction: Combat Climate, B-52 Crews, and the Vietnam War. National Defense University (NDU), 2016.

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Fifty Shades of Friction: Combat Climate, B-52 Crews, and the Vietnam War. Independently Published, 2019.

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Department of Defense. Foundations of U. S. Air Doctrine: The Problem of Friction in War - Airpower Strategy, World War II Bomber Offensive Plan, Korea, Douhet, Billy Mitchell, Clausewitzian Doctrine. Independently Published, 2017.

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Fleck, Dieter. The Law Applicable to Peace Operations. Edited by Andrew Clapham and Paola Gaeta. Oxford University Press, 2014. http://dx.doi.org/10.1093/law/9780199559695.003.0009.

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This chapter examines issues within the wider field of peace operations, focusing on gaps and policy problems of legal regulation. Section II begins by looking at frictions that evolved during the genesis of these operations and their current legal challenges. Section III takes a critical look at the existing legal basis and political control of these operations. Section IV comments on the status of peacekeepers in the host country and in transit states. Section V examines select issues of applicable law and policy for the conduct of peace operations. These include security and safety; command
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Engel, Stephen M. Seeing Sexuality. Edited by Richard Valelly, Suzanne Mettler, and Robert Lieberman. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199697915.013.007.

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This chapter lays out the parameters of one developmental approach to sexuality politics in the United States. Whereas much scholarship in LGBTQ politics has focused on public opinion, interest groups, and social movement behavior, this chapter focuses on citizenship as the primary unit of analysis since citizenship, as it connotes a relationship between the individual and the state in which the latter acknowledges the former to fall within its responsibility to regulate and protect, brings the connection between state development and sexual identity to the fore. State institutions have recogn
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Book chapters on the topic "Static friction force"

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Zhou, Runeng, Yongpeng Gu, Gexue Ren, and Suyuan Yu. "Hysteresis Behaviors of a Bump-Type Foil Bearing Structure with Amended LuGre Friction Model." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_31.

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AbstractThe gas foil bearing (GFB) has the prospect of application in the nuclear field because of its oil-free lubrication and high-speed as well as high-temperature performance. In this paper, the hysteresis behaviors of the bump foil structure of bump-type gas foil bearings are investigated. The bump foil is modeled by beam elements and reduced by Guyan reduction method. The amended LuGre friction model is adopted and all the state variables are solved simultaneously in the fully coupled scheme. It is found that, along with the decrease of the friction stiffness per normal force, the presli
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Filippov, Alexander E., and Valentin L. Popov. "Study of Dynamics of Block-Media in the Framework of Minimalistic Numerical Models." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_7.

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AbstractOne of the principal methods of preventing large earthquakes is stimulation of a large series of small events. The result is a transfer of the rapid tectonic dynamics in a creep mode. In this chapter, we discuss possibilities for such a transfer in the framework of simplified models of a subduction zone. The proposed model describes well the basic characteristic features of geo-medium behavior, in particular, statistics of earthquakes (Gutenberg Richter and Omori laws). Its analysis shows that local relatively low-energy impacts can switch block dynamics from stick–slip to creep mode.
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Schmerr, Lester W. "Frictional Forces." In Engineering Statics with MATLAB®. Chapman and Hall/CRC, 2024. http://dx.doi.org/10.1201/9781003372592-9.

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Choi, D. H., and W. Hwang. "Measurement of Frictional Forces in Atomic Force Microscopy." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-30-2.851.

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Dreija, Z., O. Liniņš, Fr Sudnieks, and N. Mozga. "Friction Force and Stresses Analysis for Contact of Assembled Details." In Solid State Phenomena. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-21-3.334.

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Fisher, D. S. "Friction and Forced Flow: Collective Transport in Disordered Media." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83033-4_39.

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Zakhariev, Evtim V. "Quasi-Static Modelling of the Multibody System Dynamics Taking into Account the Friction Forces." In Computational Dynamics in Multibody Systems. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-017-1110-4_17.

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Mate, C. Mathew, and Robert W. Carpick. "Friction." In Tribology on the Small Scale. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199609802.003.0004.

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This chapter introduces friction as it manifests itself in everyday life. The chapter begins with Amontons’ law (1699) that friction is proportional to the loading force between contacting surfaces (the proportionality constant is called the coefficient of friction). The two primary mechanisms for unlubricated friction are adhesive friction and plowing friction, with the predominant mechanism generally being adhesive friction. Adhesive friction is proportional to the real area of contact; for rough surfaces, this contact area is proportional to the loading force, providing a physical underpinn
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Mate, C. Mathew, and Robert W. Carpick. "Atomistic Origins of Friction." In Tribology on the Small Scale. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199609802.003.0011.

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This chapter covers the current state of knowledge about how the shear strength (the force needed to slide one surface over another) originates at the atomic level. For adhesive friction, friction originates from the forces needed to move the atoms on one surface over the atomic structure of the opposing surface; the simplest model for adhesive friction is the cobblestone model. The Frenkel–Kontorova model, the Prandtl–Tomlinson model, and molecular dynamic simulations are typically used to show how the atomic structure of the surfaces leads to static friction. One exciting aspect of these fri
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Thumati, Prafulla, Roshan Thumati, and Prajwal P. Thumati. "Understanding the Influence of Static and Dynamic Occlusal Forces on the Musculoskeletal System With Digital Occlusal Analysis." In Advances in Medical Technologies and Clinical Practice. IGI Global, 2024. https://doi.org/10.4018/978-1-6684-9313-7.ch015.

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Health literature explains poorly the association that the dental occlusion and the occlusal forces have on the human body. Quantified occlusal contact force and timing parameters have been largely ignored in studies that assessed human health. This chapter introduces a novel concept where biometric technologies objectively measure all the components of the Stomatognathic System (occlusion - T-Scan 10), muscles (EMG), Temporomandibular Joints (TMJ-JVA), mandibular movements (kinesiology-jaw tracking), nerves (TENS) and positional posture (Matscan), to relate their findings to human conditions
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Conference papers on the topic "Static friction force"

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Vorobyov, Alexander, Kirill Vorobyev, Zhamaletdin Mamasaidov, Alawiyeh Mohamad Ali, and Tatiana Chekushina. "CLASSIFICATION OF NANOBEARINGS AND MATHEMATICAL FORMULATION OF THEIR OPERATION." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s24.02.

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Nanomechanical systems necessitate components with unparalleled precision and minimal frictional resistance to achieve optimal performance. Nanobearings represent a critical class of components that facilitate rotational or linear motion at the nanoscale. This paper presents a comprehensive classification of nanobearings, encompassing their structural attributes, materials employed, and operational mechanisms. Additionally, it provides a detailed mathematical formulation that describes the static and dynamic behavior of nanobearings, including equations for load capacity, friction torque/force
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Huang, Jack Youqin. "Coefficients of Friction: Static Versus Dynamic." In 2020 Joint Rail Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/jrc2020-8025.

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Abstract This paper deals with the problem of static and dynamic (or kinetic) friction, namely the coefficients of friction for the two states. The coefficient of static friction is well known, and its theory and practice are commonly accepted by the academia and the industry. The coefficient of kinetic friction, however, has not fully been understood. The popular theory for the kinetic friction is that the coefficient of dynamic friction is smaller than the coefficient of static friction, by comparison of the forces applied in the two states. After studying the characteristics of the coeffici
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Nakamura, Hiroshi, Kiyoshi Ohishi, Yuki Yokokura, Toshimasa Miyazaki, and Akifumi Tsukamoto. "Fine force control without force sensor based on reaction force estimation system considering static friction and kinetic friction." In IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2016. http://dx.doi.org/10.1109/iecon.2016.7794080.

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Iwatani, Masayoshi, and Ryo Kikuuwe. "An external force estimator using elastoplastic friction model with improved static friction behavior." In 2016 14th International Conference on Control, Automation, Robotics and Vision (ICARCV). IEEE, 2016. http://dx.doi.org/10.1109/icarcv.2016.7838842.

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Hirano, Motohisa. "Atomistics of Friction." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63993.

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The atomistic mechanisms are proposed for the origin of the static and the dynamic friction forces. The mechanism for the origin of the static friction force resembles the mechanical locking mechanism in a surface roughness model. The origin of the dynamic friction force is formulated as a problem of how the given translational kinetic energy dissipates into the internal relative motions of constituent atoms of bodies during sliding. From studying that the available phase space volume of the translational motion becomes negligible small for a large system size, compared with that of the intern
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Zhang, Cheng, Gang Su, Renjia Tan, and Hongyi Li. "EXPERIMENTAL INVESTIGATION OF THE INTESTINE’S FRICTION CHARACTERISTIC BASED ON “INTERNAL FORCE-STATIC FRICTION” CAPSUBOT." In Biomedical Engineering. ACTAPRESS, 2010. http://dx.doi.org/10.2316/p.2010.723-026.

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Zhang, Cheng, Gang Su, Renjia Tan, and Hongyi Li. "Experimental Investigation of the Intestine's Friction Characteristic based on """"Internal Force-Static Friction"""" Capsubot." In Biomedical Engineering. ACTAPRESS, 2011. http://dx.doi.org/10.2316/p.2011.723-026.

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Luo, Albert C. J., and Patrick Zweigart. "Analytical Dynamics of a Piecewise Linear Friction Oscillator Under a Periodic Excitation." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80108.

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This paper presented a methodology to determine the analytical dynamics of the periodically forced friction oscillator. The friction force is modeled by a piecewise linear, kinetic friction model with the static force. The input and output force concepts in the vicinity of the discontinuous friction force boundary are introduced. The force criteria for the onset and vanishing of stick and non-stick motions are presented through the input and output forces. The periodic motion of such an oscillator is determined through the corresponding mapping structure. The local stability of the periodic mo
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Li, Hongyi, Katsuhisa Furuta, and Felix L. Chernousko. "Motion Generation of the Capsubot Using Internal Force and Static Friction." In Proceedings of the 45th IEEE Conference on Decision and Control. IEEE, 2006. http://dx.doi.org/10.1109/cdc.2006.377472.

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Zhang, Cheng, Gang Su, and Hongyi Li. "Motion control research of internal force-static friction capsubot in intestine." In 2011 IEEE/ICME International Conference on Complex Medical Engineering - CME 2011. IEEE, 2011. http://dx.doi.org/10.1109/iccme.2011.5876763.

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Reports on the topic "Static friction force"

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Klammler, Harald. Introduction to the Mechanics of Flow and Transport for Groundwater Scientists. The Groundwater Project, 2023. http://dx.doi.org/10.21083/gxat7083.

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Starting from Newton’s laws of motion and viscosity, this book is an introduction to fundamental aspects of fluid dynamics that are most relevant to groundwater scientists. Based on a perspective of driving versus resisting forces that govern the motion of a fluid, the author derives Darcy’s law for flow through porous media by drawing an analogy to Bernoulli’s law for fluid with negligible viscosity. By combining the effects of gravity and pressure, the author identifies hydraulic head as a convenient numerical quantity to represent the force driving groundwater flow. In contrast to the physi
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Michaels, Michelle, Theodore Letcher, Sandra LeGrand, Nicholas Webb, and Justin Putnam. Implementation of an albedo-based drag partition into the WRF-Chem v4.1 AFWA dust emission module. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42782.

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Employing numerical prediction models can be a powerful tool for forecasting air quality and visibility hazards related to dust events. However, these numerical models are sensitive to surface conditions. Roughness features (e.g., rocks, vegetation, furrows, etc.) that shelter or attenuate wind flow over the soil surface affect the magnitude and spatial distribution of dust emission. To aide in simulating the emission phase of dust transport, we used a previously published albedo-based drag partition parameterization to better represent the component of wind friction speed affecting the immedi
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LeGrand, Sandra, Theodore Letcher, Gregory Okin, et al. Application of a satellite-retrieved sheltering parameterization (v1.0) for dust event simulation with WRF-Chem v4.1. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47116.

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Employing numerical prediction models can be a powerful tool for forecasting air quality and visibility hazards related to dust events. However, these numerical models are sensitive to surface conditions. Roughness features (e.g., rocks, vegetation, furrows, etc.) that shelter or attenuate wind flow over the soil surface affect the magnitude and spatial distribution of dust emission. To aide in simulating the emission phase of dust transport, we used a previously published albedo-based drag partition parameterization to better represent the component of wind friction speed affecting the immedi
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Limtrakul, Sunun, and Wiwut Tanthapanichakoon. Modeling and simulation of flows in two-phase fluidized systems. The Thailand Research Fund, 1999. https://doi.org/10.58837/chula.res.1999.57.

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This present work aims to investigate the solids motion and fluid flow in a two phase fluidized bed via a discrete particle modeling and simulation. The motion of individual particle is based on the fluid force acting on the particle and the contact force between particles. The contact force is models by using the same analogy of spring, dash-pot and friction slider. In addition, the mixing and segregation in beds containing two types of particles with different densities and different size are also studies. Moreover, the effects of superficial gas velocity and bad geometry on the solids movem
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Wu, Yingjie, Selim Gunay, and Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2020. http://dx.doi.org/10.55461/ytgv8834.

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Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining funct
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Lawrence, David. UK trade and the war in Ukraine. Royal Institute of International Affairs, 2022. http://dx.doi.org/10.55317/9781784135379.

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- The UK is less exposed to the direct effects of Russia’s invasion of Ukraine than its European neighbours. However, the indirect and longer-term effects of the war on UK trade could still be significant. - Inflationary pressure worldwide will contribute to price rises in the UK, particularly for food and energy. The ongoing effects of both Brexit – which has caused cross-border supply frictions and worker shortages – and the COVID-19 pandemic – which led to pent-up domestic demand and further reduced the labour force – will only increase this upward pressure. - The war has prompted increased
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EFFECT OF RANDOM PRE-STRESSED FRICTION LOSS ON THE PERFORMANCE OF A SUSPEN-DOME STRUCTURE. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/ijasc.2022.18.1.5.

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The key to the high-efficiency performance of the suspen-dome structure is to apply the pre-stressed design value to the structure accurately. However, engineering practice has found that the use of tensioning hoop cables to apply the pre-stress will produce noticeable pre-stressed friction loss (PFL), which significantly affects the safety performance of the structure. In this paper, based on a 1:10 scaled-down experiment model of a suspen-dome structure with rolling cable-strut joint installed, the random PFL (RPFL) effect of the suspen-dome on structure performance was analyzed through a pr
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ROTATIONAL RESISTANCE TEST OF A NEW ALUMINUM ALLOY PENETRATING (AAP) JOINT SYSTEM. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.2.4.

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Aluminum alloy penetrating (AAP) joint is an improved form of the Aluminum Alloy Temcor (AAT) joint system consisting of one penetrating member, four short members, gussets, bolts and a U-shaped connector. The rotational resistance performance of AAP joints is investigated by a static out-of-plane flexural test. The specific experimental parameters include the gusset thickness (6 mm and 12 mm) and shape (circular and X-shaped). The differences between penetrating and short members in AAP joints are analyzed, and the influence of thicknesses and shapes of gusset on rotational resistance behavio
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