Relevant bibliographies by topics / Contact dynamic method

Contents

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

Academic literature on the topic 'Contact dynamic method'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Contact dynamic method"

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Zhao, Jian, Ming Xiao, Juntao Chen, and Dongdong Li. "Explicit Dynamic DDA Method considering Dynamic Contact Force." Shock and Vibration 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/7431245.

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This paper proposes an explicit dynamic DDA method considering dynamic contact force, which aims at solving the problems of low efficiency of dynamic contact detection and the simulation of dynamic contact force in the conventional DDA method. The mutual contact between blocks can be regarded as the application of point loading on a single block, and the corresponding contact submatrix can be calculated and the simultaneous equations of the block system can be integrated. The central difference method is adopted to deduce the explicit expression of block displacement containing dynamic contact
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Ohnishi, Yoshitaka, Daiji Ichishima, and Ryota Hirose. "509 Renormalized Molecular Dynamics Method for Dynamic Contact Analysis." Proceedings of The Computational Mechanics Conference 2010.23 (2010): 74–75. http://dx.doi.org/10.1299/jsmecmd.2010.23.74.

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Козир, Олег Васильович. "DYNAMIC TEMPERATURE MEASUREMENT BY CONTACT METHOD." Information systems, mechanics and control, no. 17 (December 29, 2017): 134–43. http://dx.doi.org/10.20535/2219-3804172017100686.

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morisawa, Mitsuharu, Rafael Cisneros, Mehdi Benallegue, Iori Kumagai, Adrien Escande, and Fumio Kanehiro. "Sequential Trajectory Generation for Dynamic Multi-Contact Locomotion Synchronizing Contact." International Journal of Humanoid Robotics 17, no. 01 (2020): 2050003. http://dx.doi.org/10.1142/s0219843620500036.

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This paper proposes a new framework to generate 3D multi-contact locomotion with low computation cost. The proposed framework consists of (a) the derivation of the prospect centroidal dynamics by introducing a force distribution ratio, where it can be represented with a formulation similar to the inverted pendulum’s one, and (b) the development of a fast computation method for generating a 3D center-of-mass (CoM) trajectory. Then (c) the ZMP reference is modified so that feasible contact wrench can be generated by a force distribution using the centroidal dynamics with the approximated frictio
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Kubrak, Anatoliy, Lesya Ladieva, Anatoliy Burban, and Roman Dubik. "Experimental method of contact membrane distillation process research." Chemistry & Chemical Technology 2, no. 2 (2008): 153–56. http://dx.doi.org/10.23939/chcht02.02.153.

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A laboratory setup for the research of contact membrane distillations (CMD) process is described; a non-standard algorithm of defining dynamic characteristics of a channel, which are directly inaccessible for measurement, by its transitive characteristics that can be represented as a chain of consistently connected elements, as well as separate elements of this chain, is offered.
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Caux, S., and R. Zapata. "Modeling and control of biped robot dynamics." Robotica 17, no. 4 (1999): 413–26. http://dx.doi.org/10.1017/s0263574799001411.

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This paper addresses the problem of modeling biped dynamics and the use of such models for the control of walking, running and jumping robots. We describe two approaches to dynamic modeling: the basic Lagrange approach and the non-regular dynamic approach. The new non-regular dynamic approach takes into account discontinuities due to rigid contact between punctual feet and the ground without computing the exact impact time. The contact is close to the physical situation given by non-linear laws (impenetrability, non-smooth contact and real friction cone). Contact dynamics can be well managed w
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Hu, Ning. "A solution method for dynamic contact problems." Computers & Structures 63, no. 6 (1997): 1053–63. http://dx.doi.org/10.1016/s0045-7949(96)00408-7.

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Zong, Ming, Zheng Di Cao, and Tian Yu Dong. "Research on Control Method and the Structure Design of Asynchronous Modular Contactor." Advanced Materials Research 1008-1009 (August 2014): 501–4. http://dx.doi.org/10.4028/www.scientific.net/amr.1008-1009.501.

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Contactors as low-voltage electrical products are largely used, contact bounce when contactor closing and arc which produces during opening is the main factor influencing a contactor’s life. This paper proposed a new structure that asynchronous modular, N-pole contactors consist of N independent contact systems, achieved each contact individually controlled by closed-loop control. This is a new idea in the field of structural design and control of contactors. This paper designed the structure size of the electromagnetic system, used Simulink software to build the model, studied dynamic charact
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Duan, Yue Chen, Xia Li, Wei Wei Zhang, Guo Ning Liu, and Ting Ting Wang. "Impact Dynamics of Flexible Multibody System Based on Continuous Contact Force Method." Applied Mechanics and Materials 744-746 (March 2015): 1628–34. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1628.

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The impact dynamics of spatial multi-link flexible multibody system is studied based on the continuous contact force method (CCFM). According to the rigid-flexible coupling dynamic theory of flexible multibody system, the rigid-flexible coupling continuous dynamic equations of the system are established by using the recursive Lagrange method. The impact dynamic equations of the system are stylized derived on the use of CCFM basing on the nonlinear spring-damper model. The contact separation criterion is given to achieve the conversion and calculation of the dynamic model for the system at diff
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Pozzolini, Cédric, Yves Renard, and Michel Salaün. "The singular dynamic method for dynamic contact of thin elastic structures." ESAIM: Proceedings 42 (December 2013): 20–33. http://dx.doi.org/10.1051/proc/201342003.

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Dissertations / Theses on the topic "Contact dynamic method"

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Nhu, Viet-Hung. "Dialogues numériques entre échelles tribologiques." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0043/document.

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En tribologie, la modélisation numérique est aujourd'hui un outil indispensable pour étudier un contact afin de pallier les limites expérimentales. Pour comprendre de mieux en mieux les phénomènes mis en jeu, les modèles ne se situent plus à une seule échelle, mais en font intervenir plusieurs, rendant plus que jamais le concept de triplet tribologique incontournable. Travaillant avec cette philosophie et en se basant sur l'approche Non Smooth Contact Dynamics, dont nous rappelons les grandes lignes, nous proposons de franchir deux cas: proposer des modèles offrant des résultats quantitatifs e
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Catterou, Thomas. "Etude numérique et expérimentale du comportement dynamique non linéaire d'un réseau de tubes avec jeux : application aux faisceaux d'aiguilles combustibles RNR." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0443/document.

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Dans un assemblage combustible de réacteur à neutrons rapides, les aiguilles combustibles sont insérées en faisceau dans un tube hexagonal avec des jeux de montage. Lors de situations transitoires accidentelles de type séisme ou dans des phases de transport et de manutention des assemblages, les aiguilles sont donc susceptibles de se déplacer légèrement dans le faisceau et de s’entrechoquer les unes avec les autres, plusieurs centaines de milliers de contacts auront alors lieu dans le faisceau. L’objectif de cette thèse est de développer une méthode numérique capable simuler le comportement dy
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Bou, leba bassil Marianne. "Étude des mécanismes aérodynamiques à l'origine du bruit de contact pneumatique/chaussée." Thesis, Ecole centrale de Nantes, 2020. http://www.theses.fr/2020ECDN0019.

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Cette thèse traite des mécanismes de pompage d'air à l'origine du bruit de roulement dans le cas d'un pneumatique lisse roulant sur une cavité cylindrique intégrée à la chaussée. Un modèle CFD est utilisé pour calculer la variation de la pression d'air dynamique au fond de la cavité dont le volume varie durant le contact avec le pneu. Une méthode de piston a été validée pour modéliser cette variation de volume par un déplacement vertical du fond de la cavité, équivalent à la variation de son volume causée par la pénétration de la bande de roulement durant le contact. La variation de volume uti
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Eiselt, Uwe, and Thomas Kelichhaus. "Dynamische Auslegung von Zahnradgetrieben mittels Mehrkörpersimulation." Technische Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A21398.

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Auf Grund wachsender Nachfrage der simulativen Beurteilung von Getrieben hinsichtlich Geräuschentwicklung, Vibration und Belastbarkeit, kommt den Berechnungsmethoden immer größere Bedeutung zu. Hier spielen nicht nur die Steifigkeit der Verzahnung, sondern auch die Steifigkeiten der Wellen, Lagerungen und Gehäuse eine wichtige Rolle. Dazu werden unterschiedliche Simulationsmethoden vorgestellt und diese hinsichtlich Genauigkeit, Effizienz und Limitierung bewertet. Ein wichtiger Aspekt ist in diesem Zusammenhang auch die Modellbildung, insbesondere die Ermittlung der Eingabedaten für die Besc
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Kudawoo, Ayaovi Dzifa. "Problèmes industriels de grande dimension en mécanique numérique du contact : performance, fiabilité et robustesse." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4771/document.

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Ce travail de thèse concerne la mécanique numérique du contact entre solides déformables. Il s'agit de contribuer à l'amélioration de la performance, de la fiabilité et de la robustesse des algorithmes et des modèles numériques utilisés dans les codes éléments finis en particulier Code_Aster qui est un code libre développé par Électricité De France (EDF) pour ses besoins en ingénierie. L'objectif final est de traiter les problèmes industriels de grande dimension avec un temps de calcul optimisé. Pour parvenir à ces objectifs, les algorithmes et formulations doivent prendre en compte les diffic
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Sedighi, Moghaddam Maziar. "Wettability of modified wood." Doctoral thesis, KTH, Yt- och korrosionsvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175875.

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Despite many excellent properties of wood which make it suitable for many applications, it suffers from a number of disadvantages limiting its use. For instance, modification is needed to reduce water sorption and to improve decay resistance, dimensional stability and weathering performance. In addition, wood/liquid interaction such as water wettability on wood plays an important role in design and characteristics of many processes and phenomena such as adhesion, coating, waterproofing, wood chemical modification, and weathering. This thesis focuses on enhancing the understanding of wetting of
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Vu, Thi-Lo. "Milieux Granulaires à Particules Molles : Modélisation Expérimentale et Numérique." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS100/document.

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Cette thèse porte sur l'étude de milieux granulaires constitués de particules molles. Elle s'appuie d'une part sur la méthode de corrélation d'images numériques (DIC) et d'autre part sur des simulations associant la méthode des éléments finis (FEM) et la méthode de Dynamique des Contacts (CD) permettant de tenir compte de la déformabilité élevée des particules et des interactions entre particules. Pour une large gamme de matériaux complexes (élastique, plastique et mousse solide), l'étude préliminaire de particules uniques comprimées radicalement valide la technique de DIC pour les mesures des
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Di, Stasio Jean. "The CD-Lagrange scheme, a robust explicit time-integrator for impact dynamics : A new singular mass formulation, and an extension to deformable-deformable contact." Thesis, Lyon, 2021. http://www.theses.fr/2021LYSEI029.

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Les pneumatiques sont complexes à simuler car les matériaux y sont hétérogènes, incompressibles et non-linéaires. De plus la géométrie descend jusqu’à l’échelle millimétrique pour les sculptures de la bande de roulement, ce qui requiert un maillage fin. Le modèle éléments finis présente donc un grand nombre de degrés de liberté, reliés par des équations non-linéaires. En dynamique, la simulation est d’autant plus compliquée avec des chocs. Néanmoins elle est cruciale dans le processus de conception pneumatique, où elle apporte une meilleur compréhension de la physique ceci sans tests réels. Le
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Doyen, David. "Numerical methods for dynamic contact and fracture problems." Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00596029.

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The present work deals with the numerical solution of dynamic contact and fracture problems. The contact problem is a Signorini problem with or without Coulomb friction. The fracture problem uses a cohesive zone model with a prescribed crack path. These problems are characterized by a non-regular boundary condition and can be formulated with evolutionary variational inequations or differential inclusions. For the numerical solution, we combine, as usual in solid dynamics, a finite element discretization in space and time-integration schemes. For the contact problem, we begin by comparing the m
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Fekak, Fatima-Ezzahra. "Étude de la réponse dynamique des ponts roulants soumis à des chocs multiples pendant un séisme : Co-simulation implicite / explicite multi-échelle en temps pour la dynamique du contact." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI037/document.

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Les ponts roulants sont des engins de levage situés en haut des bâtiments qu'ils équipent. Ils servent à manutentionner des charges très lourdes et parfois critiques. Pendant un séisme, un pont roulant est exposé à des chocs multiples. Ces impacts peuvent causer des dommages importants dans la structure pouvant conduire à une chute de la charge manutentionnée ou du pont roulant lui-même. Donc, la vérification de la tenue des ponts roulants au séisme est une question primordiale. Actuellement, cette vérification est basée sur des méthodes de calcul statiques. Ces méthodes font l'hypothèse d'un
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Books on the topic "Contact dynamic method"

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1950-, Panagiotopoulos P. D., ed. The boundary integral approach to static and dynamic contact problems: Equality and inequality methods. Birkhäuser, 1992.

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Snow, Edward Ramsey. Advances in grasping and vehicle contact identification: Analysis, design and testing of robust methods for underwater robot manipulation. Massachusetts Institute of Technology, 1999.

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Office, General Accounting. Navy contracting: Contract administration staffing requirements for Navy A-76 studies : briefing report to the Chairman, Subcommittee on Government Efficiency, Federalism, and the District of Columbia, Committee on Government Affairs, U.S. Senate. The Office, 1988.

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Office, General Accounting. Navy contracting: U.S. Navy ship repair contracting at Canadian shipyards : fact sheet for the Honorable Bob Packwood, United States Senate. The Office, 1986.

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Office, General Accounting. Navy contracting: Alleged improprieties of a contractor operating navy ships : fact sheet for the Chairman, Subcommittee on Merchant Marine, Committee on Merchant Marine and Fisheries, House of Representatives. The Office, 1988.

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Office, General Accounting. Navy contracting: Competition in providing maintenance for Navy aircraft : briefing report to the Honorable John C. Stennis, United States Senate. The Office, 1987.

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Office, General Accounting. Navy contracting: Military Sealift Command contracts for Operation Desert Shield : report to the Chairman, Committee on Government Operations, House of Representatives. The Office, 1991.

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Office, General Accounting. Navy contracting: Status of the 1978 shipbuilding claim settlement at Electric Boat : report to the Congress. U.S. General Accounting Office, 1986.

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Office, General Accounting. Navy contracting: Status of cost growth and claims on shipbuilding contracts : report to the chairman, Subcommittee on Defense, Committee on Appropriations, House of Representatives. The Office, 1989.

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Office, General Accounting. Navy contracting: Improvements needed in contracting for simulator maintenance services : report to the Honorable Charles Pashayan, Jr. House of Representatives. The Office, 1986.

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Book chapters on the topic "Contact dynamic method"

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Taylor, R. L., and P. Papadopoulos. "A Finite Element Method for Dynamic Contact Problems." In The finite element method in the 1990’s. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-10326-5_22.

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Doyen, David, Alexandre Ern, and Serge Piperno. "A Semi-Explicit Modified Mass Method for Dynamic Frictionless Contact Problems." In Trends in Computational Contact Mechanics. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22167-5_9.

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Hirose, S. "Dynamic Crack Contact Analysis by Boundary Integral Equation Method." In Boundary Element Methods. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-662-06153-4_12.

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Rossmanith, H. P., R. E. Knasmillner, and A. Shukla. "Experimental Investigation of Dynamic Contact Problems by Means of the Method of Caustics." In Experimental Stress Analysis. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4416-9_45.

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Arnoult, Etienne, Bernard Peseux, and Jérôme Bonini. "Search of Contact in Dynamic Finite Element Code: Presentation of an Analytical Method." In Integrated Design and Manufacturing in Mechanical Engineering. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-015-9966-5_53.

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Kanto, Y., and G. Yagawa. "Numerical Analyses of Dynamic Contact Buckling Problems Using the Penalty Finite Element Method." In Computational Mechanics ’86. Springer Japan, 1986. http://dx.doi.org/10.1007/978-4-431-68042-0_84.

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Homel, M. A., and E. B. Herbold. "Mesoscale Modeling of Porous Materials Using New Methodology for Fracture and Frictional Contact in the Material Point Method." In Dynamic Behavior of Materials, Volume 1. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62956-8_17.

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Shilko, Evgeny V., Alexey Yu Smolin, Andrey V. Dimaki, and Galina M. Eremina. "Particle-Based Approach for Simulation of Nonlinear Material Behavior in Contact Zones." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_4.

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AbstractMethods of particles are now recognized as an effective tool for numerical modeling of dynamic mechanical and coupled processes in solids and liquids. This chapter is devoted to a brief review of recent advances in the development of the popular particle-based discrete element method (DEM). DEM is conventionally considered as a highly specialized technique for modeling the flow of granular media and the fracture of brittle materials at micro- and mesoscopic scales. However, in the last decade, great progress has been made in the development of the formalism of this method. It is largely associated with the works of the scientific group of Professor S. G. Psakhie. The most important achievement of this group is a generalized formulation of the method of homogeneously deformable discrete elements. In the chapter, we describe keystones of this implementation of DEM and a universal approach that allows one to apply various rheological models of materials (including coupled models of porous fluid-saturated solids) to a discrete element. The new formalism makes possible qualitative expansion of the scope of application of the particle-based discrete element technique to materials with various rheological properties and to the range of considered scales form microscopic to macroscopic. The capabilities of this method are especially in demand in the study of the features of contact interaction of materials. To demonstrate these capabilities, we briefly review two recent applications concerning (a) the effect of adhesive interaction on the regime of wear of surface asperities under tangential contact of bodies and (b) the nonmonotonic dependence of the stress concentration in the neck of the human femur on the dynamics of hip joint contact loading.
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Calabretta, Michele, Alessandro Sitta, Salvatore Massimo Oliveri, and Gaetano Sequenzia. "Simulation of Dynamic Stresses on High Performance Engine Valve Spring System Considering Coil Clashing Effect." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_18.

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AbstractThe valve train plays a major role in the performance of internal combustion engines by controlling the combustion process and it is therefore one of the key aspects for increasing the efficiency of combustion engines. Considering the dynamics, the spring force must be high enough to reliably close the valve preventing from seating bouncing due to surge modes after the valve closure. On the other side, the spring force should be kept as low as possible in order to reduce the engine friction losses and consequently the fuel consumption. In the high-performance engines, the valve springs have to be designed and optimized for sustaining higher stresses with compact dimensions leading to critical material and manufacturing processes. This requires a reduction of moving masses and a strong focus on design and process optimization of the coil springs for reducing the mechanical load and the friction losses at low engine speed. At the same time, valve train should be reliable at high engine speed. The calculation of stresses and contact forces for moving parts under dynamic load is essential for durability analysis. A method to calculate the contact of moving masses is described and proposed to justify valve motions experimental results. To fully understand the failure mechanism of test bed reliability trials, the dynamic stresses have been calculated modeling the real springs’ shape. The contact forces have been reproduced considering the coil clash effects and the dynamic behavior of the flexible spring.
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Goloshchapov, Nikolay. "Method of the Differential Specific Forces (MDSF)." In Contact Dynamics. Apple Academic Press, 2019. http://dx.doi.org/10.1201/9781351166522-2.

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Conference papers on the topic "Contact dynamic method"

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SUN, S., H. TZOU, and M. NATORI. "A PARAMETRIC QUADRATIC PROGRAMMING METHOD FOR DYNAMIC CONTACT PROBLEMS WITH FRICTION." In 34th Structures, Structural Dynamics and Materials Conference. American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1388.

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Virlez, Geoffrey, Olivier Brüls, Valentin Sonneville, Emmanuel Tromme, Pierre Duysinx, and Michel Géradin. "Contact Model Between Superelements in Dynamic Multibody Systems." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13469.

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In this paper, a new contact formulation defined between flexible bodies modeled as superelements is investigated. Unlike rigid contact models, this approach enables to study the deformation and vibration phenomena induced by hard contacts. Compared with full-scale finite element models of flexible bodies, the proposed method is computationally more efficient, especially in case of a large number of bodies and contact conditions. The compliance of each body is described using a reduced-order elastic model which is defined in a corotational frame that follows the gross motion of the body. The b
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Negrut, Dan, Alessandro Tasora, and Mihai Anitescu. "Large-Scale Parallel Multibody Dynamics With Frictional Contact on the GPU." In ASME 2008 Dynamic Systems and Control Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/dscc2008-2139.

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In the context of simulating the frictional contact dynamics of large systems of rigid bodies, this paper reviews a novel method for solving large cone complementarity problems by means of a fixed-point iteration algorithm. The method is an extension of the Gauss-Seidel and Gauss-Jacobi methods with overrelaxation for symmetric convex linear complementarity problems. Convergent under fairly standard assumptions, the method is implemented in a parallel framework by using a single instruction multiple data (SIMD) computation paradigm promoted by the Compute Unified Device Architecture (CUDA) lib
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Hong, Fangjun, Ping Cheng, Zhen Sun, and Huiying Wu. "Simulation of Spreading Dynamics of a EWOD Droplet With Dynamic Contact Angle and Contact Angle Hysteresis." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18558.

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In this paper, the electrowetting dynamics of a droplet on a dielectric surface was investigated numerically by a mathematical model including dynamic contact angle and contact angle hysteresis. The fluid flow is described by laminar N-S equation, the free surface of the droplet is modeled by the Volume of Fluid (VOF) method, and the electrowetting force is incorporated by exerting an electrical force on the cells at the contact line. The Kilster’s model that can deal with both receding and advancing contact angle is adopted. Numerical results indicate that there is overshooting and oscillatio
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Takahashi, Takashi, and Saburo Matunaga. "Contact Dynamics of Reconfigurable Space Systems With Numerical Verification Method." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21332.

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Abstract In order to analyze dynamics of space systems, such as cluster satellite systems and the capturing process of damaged satellites, it is necessary to consider such space systems as reconfigurable multibody systems. In this paper, we discuss the numerical computation of the dynamics of the ground experiment system to simulate the capturing and berthing process of a satellite by a dual-manipulator on the flat floor as an example. We have previously discussed the efficient dynamics algorithm for reconfigurable multibody system with topological changes. However, the contact dynamics, which
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Meinhold, Waiman, and Jun Ueda. "Tendon Tapping Stimulus Characterization Through Contact Modeling." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9246.

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Tendon tapping is a common procedure with both diagnostic and therapeutic applications. Significant variability is observed in the reflex response both between and within even healthy subjects, which is likely partially caused by imprecise control or measurement of the mechanical stimulus. Reducing or measuring stimulus variability is critical to future novel applications of tendon tapping for rehabilitative neuromodulation. This work presents a contact mechanics based method for characterization of tendon mechanical stimulus. This work utilizes easily observable dynamic information about hamm
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Tikhonov, Vadim S., Alexander I. Safronov, and Mikhail Ya Gelfgat. "Method of Dynamic Analysis for Rod-in-Hole Buckling." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95059.

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The problem of a postbuckling dynamic behavior of weighted rod, which is inserted into an arbitrary profile hole with some clearance, under the axial compression load is considered. In practice, this analysis is important for calculation of the friction drag of the drillstring in inclined and horizontal wellbores. The mathematical model and numerical method of the rod-in-hole contact interaction are developed. The contact model is based on a nonlinear dependence of the normal-directed contact force on the depth of interpenetration of rod in hole. The tangential interaction of bodies with the c
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Kiely, James, and Yiao-Tee Hsia. "A Novel Method of Characterizing Slider Dynamic Motion During Intermittent Head-Disk Contact." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63195.

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Characterization of slider motion induced by contact is becoming a critical aspect of developing advanced head-disc interfaces. While vertical motion induced by contact has been studied, very little is known about down-track motion. We have introduced a new technique where the down-track motion is captured and the dynamics in three dimensions are analyzed. We have applied this technique to measure the position of a slider as it transitions from flying to making full contact with the media surface. We find that slider motion varies considerably with varying levels of interference and that motio
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Landry, M., A. Mercier, G. Ouellet, et al. "A New Measurement Method of the Dynamic Contact Resistance of HV Circuit Breakers." In 2006 IEEE/PES Transmission & Distribution Conference and Exposition: Latin America. IEEE, 2006. http://dx.doi.org/10.1109/tdcla.2006.311501.

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Cho, Jin, and Seung Kim. "An explicit solution procedure of discontinuous time integration method for dynamic-contact/impact problems." In 40th Structures, Structural Dynamics, and Materials Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-1241.

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Reports on the topic "Contact dynamic method"

1

Salveson, M. W., and R. L. Taylor. Solution of dynamic contact problems by implicit/explicit methods. Final report. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/462959.

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2

Ma, Ou, Jong Kim, and Lucas Martinez. Experimental Verification of a Systematic Method for Identifying Contact-Dynamics Model Parameters. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada482698.

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Baluk, Nadia, Natalia Basij, Larysa Buk, and Olha Vovchanska. VR/AR-TECHNOLOGIES – NEW CONTENT OF THE NEW MEDIA. Ivan Franko National University of Lviv, 2021. http://dx.doi.org/10.30970/vjo.2021.49.11074.

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The article analyzes the peculiarities of the media content shaping and transformation in the convergent dimension of cross-media, taking into account the possibilities of augmented reality. With the help of the principles of objectivity, complexity and reliability in scientific research, a number of general scientific and special methods are used: method of analysis, synthesis, generalization, method of monitoring, observation, problem-thematic, typological and discursive methods. According to the form of information presentation, such types of media content as visual, audio, verbal and combi
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Eckert, Elizabeth, Eleanor Turner, and Jo Anne Yeager Sallah. Youth Rural-Urban Migration in Bungoma, Kenya: Implications for the Agricultural Workforce. RTI Press, 2019. http://dx.doi.org/10.3768/rtipress.2019.op.0062.1908.

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This study provides insights into a specific, hard-to-reach youth subpopulation—those born in agricultural areas in Western Kenya who migrate to large towns and cities—that is often missed by research and development activities. Using a mixed-methods approach, we find high variability in movement of youth between rural villages, towns, and large urban areas. Top reasons for youth migration align with existing literature, including pursuit of job opportunities and education. For youth from villages where crop farming is the primary economic activity for young adults, 77 percent responded that t
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Heymsfield, Ernie, and Jeb Tingle. State of the practice in pavement structural design/analysis codes relevant to airfield pavement design. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40542.

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An airfield pavement structure is designed to support aircraft live loads for a specified pavement design life. Computer codes are available to assist the engineer in designing an airfield pavement structure. Pavement structural design is generally a function of five criteria: the pavement structural configuration, materials, the applied loading, ambient conditions, and how pavement failure is defined. The two typical types of pavement structures, rigid and flexible, provide load support in fundamentally different ways and develop different stress distributions at the pavement – base interface
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Oppel, Annalena. Beyond Informal Social Protection – Personal Networks of Economic Support in Namibia. Institute of Development Studies (IDS), 2020. http://dx.doi.org/10.19088/ids.2020.002.

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This paper poses a different lens on informal social protection (ISP). ISP is generally understood as practices of livelihood support among individuals. While studies have explored the social dynamics of such, they rarely do so beyond the conceptual space of informalities and poverty. For instance, they discuss aspects of inclusion, incentives and disincentives, efficiency and adequacy. This provides important insights on whether and to what extent these practices provide livelihood support and for whom. However, doing so in part disregards the socio-political context within which support prac
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Morphett, Jane, Alexandra Whittaker, Amy Reichelt, and Mark Hutchinson. Perineuronal net structure as a non-cellular mechanism of affective state, a scoping review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2021. http://dx.doi.org/10.37766/inplasy2021.8.0075.

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Is the perineuronal net structure within emotional processing brain regions associated with changes in affective state? The objective of this scoping review is to bring together the literature on human and animal studies which have measured perineuronal net structure in brain regions associated with emotional processing (such as but not limited to amygdala, hippocampus and prefrontal cortex). Perineuronal nets are a specialised form of condensed extracellular matrix that enwrap and protect neurons (Suttkus et al., 2016), regulate synaptic plasticity (Celio and Blumcke, 1994) and ion homeostasi
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