Tesis sobre el tema "Localized and distributed loading"
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Jeffrey, Holly K. "Response of grooved composites to transversely distributed and localized spherical contact loadings". Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/63040.
Texto completoCataloged from PDF version of thesis.
Includes bibliographical references (p. 133-135).
The response of a grooved composite specimen to two contact loading situations is studied; load applied via a transversely oriented cylindrical indenter and via a localized spherical ball-ended indenter. The philosophy of the Building Block Approach is used to develop these tests in the current study in that the cylindrical indenter creates a "two-dimensional loading" (transversely distributed) case, and the spherical indenter adds complexity to the system and creates a "three-dimensional loading" (localized spherical) case. The final failure and initial permanent deformation, in the form of crushing, is investigated, along with the effect of laminate configurations and ply angles. The is done by using the two indenters, six different laminates, and two types of tests to study the grooved composite specimens, 1 inch wide by 2 inches long, of 78 to 80 plies. This work uses a specimen configuration and testing technique developed in previous work. A computed microtomography technique is used to examine select specimens to ascertain the extent of the internal damage. Specimens subjected to the "two-dimensional loading" case exhibit four Behavior Types of the load-stroke response. Several aspects of the response are used to characterize the Behavior Types, including initial linear regions, knee loads, reverse knee loads, second linear regions, and changes in slopes. The responses of the two loading cases indicate that the details of the laminate play a significant role in the load-stroke response for the "two-dimensional loading" case, whereas the details of the loading play a more significant role for the "three-dimensional loading" where only one type of load-stroke behavior is generally displayed. In the "three-dimensional loading" case, significant crushing occurs which is not seen in the "two-dimensional loading" case. This is visible due to the localized loading for the "three-dimensional loading" case, and impacts the overall load-stroke response. The 900 plies, in addition to the "mesh" created by the ply angles in the laminate, and the "ply angle mismatch" within a laminate, affect the ability of the laminate to resist indentation and the load-stroke response. Recommendations for further work are presented.
by Holly K. Jeffrey.
S.M.
Mack, Moritz. "Loading and Querying Data on Distributed Virtualized Web Application Servers". Thesis, Uppsala University, Department of Information Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-108039.
Texto completoVirtualized web application servers within computational clouds, such as the GoogleApp Engine, generally restrict resource usage and therefore provide limited,relationally none-complete query facilities only. This work investigates how scalable,reliable and a more powerful access to the App Engine Datastore can beaccomplished and an Optimized Distributed Datastore Exchange (ODDSE) ispresented. Being aware of the App Engine’s resource restrictions ODDSE provides areliable and failure safe query interface to transparently exchange data with thedistributed Datastore using full SQL or AmosQL. ODDSE therefore wraps Datastorerelations and utilizes the extensible database system Amos II to compensate formissing query facilities in Google’s relationally none-complete query language GQL.Under the covers ODDSE furthermore implements an adaptive and reliablemanagement of interactions with App Engine servers. For scalability and highperformance the interaction is parallelized and continuously adapted. Theperformance of ODDSE is evaluated and compared to a similar system showing itsconsiderably good results for both bulk uploading and query processing.
Carlo, Gilles. "Dynamic loading and class management in a distributed actor system". Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-04272010-020040/.
Texto completoYu, Haoxiang. "A Comprehensive System for Dynamic and Distributed Taxi Ride-Sharing via Localized Communication". Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1619182334243885.
Texto completoIzquierdo-Roman, Alondra. "Localized Mechanical Compression as a Technique for the Modification of Biological Tissue Optical Properties". Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/76856.
Texto completoMaster of Science
Gallagher, Chad Taylor. "Acoustic Response Validation of a Finite Cylindrical Shell with Multiple Loading Conditions". Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83761.
Texto completoMaster of Science
Saloustros, Savvas. "Tracking localized cracks in the computational analysis of masonry structures". Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461714.
Texto completoLos métodos numéricos son decisivos en la ingeniería para la conservación de estructuras de mampostería existentes y el diseño de estructuras nuevas. Entre ellos, los métodos macro-mecánicos de elementos finitos, basados en el concepto de fisuras distribuidas, son habitualmente los preferidos como opción asequible para el análisis de grandes estructuras de mampostería. Sin embargo, suelen resultar en a una representación poco realista del daño, distribuido en grandes áreas de la estructura, lo que impide la correcta interpretación del patrón de daño. Además, esta metodología presenta una patología más crítica, la dependencia de la malla, que influye notablemente en las predicciones de seguridad y estabilidad. Para superar estas limitaciones, esta tesis propone una nueva herramienta numérica basada en el enriquecimiento del clásico enfoque de fisuras distribuidas con un algoritmo de trazado local. El objetivo de este modelo de daño localizado es el análisis no-lineal de las estructuras de mampostería de manera realista y eficiente con una representación mejora-da de fisuras. El comportamiento no lineal de la mampostería se simula a través de la adopción de un modelo de mecánica de daño continuo con dos índices de daño, permitiendo la diferenciación entre las respuestas mecánicas de tensión y compresión de la mampostería. En este contexto, se propone e implementa una nueva formulación explícita para la evolución de deformaciones irreversibles. Se derivan dos nuevas expresiones para la regularización del ablandamiento de tracción y compresión según el ancho de banda de la fisura, garantizan-do la objetividad del modelo de daño al respecto del tamaño de la malla. La simulación del comportamiento estructural de las estructuras de mampostería en condiciones de carga y contorno generales precisa de algunos desarrollos en el contexto de los algoritmos locales de trazado. Con este objetivo, se presenta la mejora de los algoritmos locales de trazado con nuevos procedimientos que posibilitan la simulación de fisuración múltiple, arbitraria e secante bajo cargas monótonas y cíclicas. Además, se investiga el efecto de diferentes criterios de propagación de fisuras y se aborda la selección entre más de un plano de falla posible. El modelo de daño localizado propuesto se valida mediante la simulación de una serie de ejemplos estructurales. Éstos van desde pruebas a pequeña escala en probetas de hormigón, con pocas fisuras dominantes, hasta estructuras de mampostería de mediana y gran escala con fisuración múltiple de tracción, de cortante y de flexión. Los análisis se comparan con los resultados analíticos, experimentales y numéricos obtenidos con métodos alternativos disponibles en la literatura. El modelo de daño localizado mejora en gran medida la independencia de la malla del clásico método de fisuras distribuidas y reproduce patrones de daño y mecanismos de colapso de una manera eficiente y realista
Liu, Yuan. "Studies on Designing Distributed and Cooperative Systems for Solving Constraint Satisfaction Problems of Container Loading". 京都大学 (Kyoto University), 2008. http://hdl.handle.net/2433/57262.
Texto completoVu, Chinh Trung. "An Energy-Efficient Distributed Algorithm for k-Coverage Problem in Wireless Sensor Networks". Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/cs_theses/40.
Texto completoMokhtari, Ghassem. "Smart resource control in distribution network to improve the integration level of PV". Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/72235/1/Ghassem_Mokhtari_Thesis.pdf.
Texto completoVu, Chinh Trung. "Distributed Energy-Efficient Solutions for Area Coverage Problems in Wireless Sensor Networks". Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/cs_diss/37.
Texto completoGoodpaster, Benjamin A. "Analytical Modeling and Impedance Characterization of Nonlinear, Steady-State Structural Dynamics in Thermomechanical Loading Environments". The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524063139635613.
Texto completoGouiza, Fairouz. "Modélisation et évaluation des performances de la chaine de transport intermodal de porte à porte : le cas du corridor de la Vallée de Seine". Thesis, Le Havre, 2016. http://www.theses.fr/2016LEHA0002/document.
Texto completoThe work presented in this thesis contributes to the field of the extended enterprise and the development of distributed information systems. This is obviously an important subject of study for the logistics community (supply chain), but also for the software engineering community. It is in this context that the objectives are to provide a model of global supply chain in an intermodal environment door to door service to solve the problems: (i) interfaces between the different actors involved along the chain and (ii) trans-loading operations generated by the goods transfer operations from one mode of transport to another. Thus, improved performance of the supply chain depends heavily on the level of cooperation and coordination, and especially sharing and validity of information and knowledge between the different actors in the chain (transport organizer, forwarding, Supplier, etc.). The application is located in the corridor of the Seine valley. The work is part of the project APLOG (Performance Improvement and global logistics) financed by the Haute Normandie region
Ben, Salem Aymen. "The Application of Multiuser Detection to Spectrally Efficient MIMO or Virtual MIMO SC-FDMA Uplinks in LTE Systems". Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/30351.
Texto completo戴祖偉. "Estimate of distributed loading on architectural frame". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/80516323857899455125.
Texto completoWei, Tai Juw y 戴祖偉. "Estimate of Distributed Loading on Architectural Frame". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/25653155470464363181.
Texto completo國立臺灣科技大學
營建工程技術學系
81
In architectural structure analysis,the simplified frame model is usually adopted for analyzed.And the determination of the equivalent distributed vertical load is almost based on the yielding line theory of slab,that is,to use partition zone of yielding line as the equivalent distributed vertical load on beam. The research of this thesis is to disuss the accuracy of the general loading mode as the above mentioned. At first, by the structural analysis software SAP-90, using the frame model that included shell element to analysis indiated loading condition.When the calculations for all the usually used aspect ratio is done,take the analyzed shear and torsion on the frame regressing to shear and torsional fitting curve. When the polynomial shear curve is differentiated , we can get the equivalent distributed vertical load , as the same , when differentiated the polymial torsion curve , we can get the distributed torsion on beam.As the distributed load for all the aspect ratio is get ,from appropriate numerial method, we can determine all the load on the simplified frame model. When the loading is determinated from the above mentioned method , to verify the analysis accuray from this method is another another important task of this thesis. It is the final destination of this thesis,that, if we can get more accurately analysis than the traditional load method.
Michel, Jonas Reinhardt. "Supporting device-to-device search and sharing of hyper-localized data". Thesis, 2015. http://hdl.handle.net/2152/31018.
Texto completotext
Wang, Chih-Wei. "Flow-directed solution self-assembly of block copolymers in microfluidic devices". Thesis, 2012. http://hdl.handle.net/1828/3984.
Texto completoGraduate