Academic literature on the topic 'Repeated loading'

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Journal articles on the topic "Repeated loading"

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Ogawa, Keita, Kosuke Shimizu, Mariko Yamasaki, and Yasutoshi Sasaki. "Fatigue behavior of Japanese cypress (Chamaecyparis obtusa) under repeated compression loading tests perpendicular to the grain." Holzforschung 71, no. 6 (June 27, 2017): 499–504. http://dx.doi.org/10.1515/hf-2016-0227.

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Abstract The purpose of this study was to gain an in-depth understanding of the fatigue behavior of Japanese cypress as a result of compression. Repeated compression loading tests were conducted on small clear wood specimens in the form of a pulsating triangular wave of frequency 1.0 Hz, and 864000 repeated loading cycles were performed. The change in stiffness and the maximum strain (STRmax) with repeated loadings were investigated, based on the stress-strain relationship obtained from the test. Stiffness hardly changed under conditions of low stress levels (SLs), even under repeated loading. STRmax increased exponentially as the number of loading cycles increased. Furthermore, the fatigue limit was predicted by analyzing the change of STRmax with repeated loading. According to the analysis, the fatigue limit was revealed to be approximately 60% of the SL (standardizing the stress when the strain is 0.05 under static load).
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Soh, C. K., S. P. Chiew, and Y. X. Dong. "Concrete—steel bond under repeated loading." Magazine of Concrete Research 54, no. 1 (February 2002): 35–46. http://dx.doi.org/10.1680/macr.2002.54.1.35.

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Scholz, H. "P‐Delta Effect Under Repeated Loading." Journal of Structural Engineering 116, no. 8 (August 1990): 2070–82. http://dx.doi.org/10.1061/(asce)0733-9445(1990)116:8(2070).

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Rteil, Ahmad, Khaled Soudki, and Timothy Topper. "Mechanics of bond under repeated loading." Construction and Building Materials 25, no. 6 (June 2011): 2822–27. http://dx.doi.org/10.1016/j.conbuildmat.2010.12.053.

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Zhao, Xuehang, Haifeng Li, Tong Chen, Bao’an Cao, and Xia Li. "Mechanical Properties of Aluminum Alloys under Low-Cycle Fatigue Loading." Materials 12, no. 13 (June 27, 2019): 2064. http://dx.doi.org/10.3390/ma12132064.

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In this paper, the mechanical properties of 36 aluminum alloy specimens subjected to repeated tensile loading were tested. The failure characteristics, stress-strain hysteresis curves and its corresponding skeleton curves, stress cycle characteristics, and hysteretic energy of specimens were analyzed in detail. Furthermore, the finite element model of aluminum alloy specimens under low-cycle fatigue loading was established and compared with the experimental results. The effects of specimen parallel length, parallel diameter, and repeated loading patterns on the mechanical properties of aluminum alloys were discussed. The results show that when the specimen is monotonously stretched to fracture, the failure result from shearing break. When the specimen is repeatedly stretched to failure, the fracture of the specimen is a result of the combined action of tensile stress and plastic fatigue damage. The AA6061, AA7075, and AA6063 aluminum alloys all show cyclic softening characteristics under repeated loading. When the initial stress amplitude of repeated loading is greater than 2.5%, the repeated tensile loading has a detrimental effect on the deformability of the aluminum alloy. Finally, based on experiment research as well as the results of the numerical analysis, the calculation method for the tensile strength of aluminum alloys under low-cycle fatigue loading was proposed.
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Almaskari, Fahad, and Farrukh Hafeez. "Study on behaviour of geometrically scaled glass reinforced epoxy tubes subjected to non-coincident quasi static-indentation." International Journal of Structural Integrity 9, no. 5 (October 1, 2018): 675–92. http://dx.doi.org/10.1108/ijsi-12-2017-0078.

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Purpose The purpose of this paper is to study the behaviour of glass reinforced epoxy tubes subjected to repeated indentation loads at two non-coincident indentations 180° apart. Design/methodology/approach Four geometrically scaled specimens ranging from 100 to 400 mm diameter were used in repeated indentation tests. Force, displacement and damage growth were recorded for loading and unloading until the indenter returned to its original starting point. Findings Similar scaled trends were observed between the non-coincidental loadings. Unlike reported response form coincidental loadings, the responses from non-coincidental loadings yield lower values for bending stiffness and peak load. Research limitations/implications The differences in behaviour of the specimen between non-coincident loadings were attributed to reductions in fracture toughness and circumferential modulus. Practical implications Distant non-interacting damage and delamination around the circumference does reduce the structural performance. Originality/value Behaviour of composite tubes under different loading conditions, for example low speed impact or quasi static indentation, is widely studied, however little attention has been given to the repeated loading incidents.
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Nnadi, G. N., and R. J. Mitchell. "Behaviour of cemented sandfills under repeated loadings." Canadian Geotechnical Journal 28, no. 5 (October 1, 1991): 746–52. http://dx.doi.org/10.1139/t91-089.

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Two series of tests were conducted to study the behaviour of cemented tailings backfills materials under repeated loading conditions. Drained triaxial and drained plane strain boundary conditions were used in this experimental work. Two distinct patterns of behaviour were found to exist, and these were separated by a critical stress level close to the static strength of the cemented materials. These materials can sustain instantaneous repeated loading deviatoric stresses of 1.2 times the static strength for up to a dozen stress applications but generally reach a failure state with multiple applications of repeated loads in excess of 0.9 times the static failure loads. The behaviour of the cemented backfill was found to progressively become more plastic with increased number of stress applications. The resilient modulus was found to initially decrease before increasing with increased number of stress applications. Key words: repeated loadings, cemented backfills, resilient modulus.
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Jin, O., H. Lee, and S. Mall. "Investigation Into Cumulative Damage Rules to Predict Fretting Fatigue Life of Ti-6Al-4V Under Two-Level Block Loading Condition1." Journal of Engineering Materials and Technology 125, no. 3 (July 1, 2003): 315–23. http://dx.doi.org/10.1115/1.1590998.

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The effects of variable amplitude loading on fretting fatigue behavior of titanium alloy, Ti-6Al-4V were examined. Fretting fatigue tests were carried out under constant stress amplitude and three different two-level block loading conditions: high-low (Hi-Lo), low-high (Lo-Hi), and repeated block of high and low stress amplitudes. The damage fractions and fretting fatigue lives were estimated by linear and non-linear cumulative damage rules. Damage curve analysis (DCA) and double linear damage rule (DLDR) were capable to account for the loading order effects in Hi-Lo and Lo-Hi loadings. In addition, the predictions by DCA and DLDR were better than that by linear damage rule (LDR). Besides its simplicity of implementation, LDR was also capable of estimating failure lives reasonably well. Repeated two-level block loading resulted in shorter lives and lower fretting fatigue limit compared to those under constant amplitude loading. The degree of reduction in fretting fatigue lives and fatigue strength depended on the ratio of cycles at lower stress amplitude to that at higher stress amplitude. Fracture surface of specimens subjected to Hi-Lo and repeated block loading showed the clear evidence of change in stress amplitude of applied load. Especially, the repeated two-level block loading resulted in characteristic markers which reflected change in crack growth rates corresponding to different stress amplitudes.
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KOH, Ki, and Koichi TAKANASHI. "RELIABILITY THEORY OF STRUCTURES UNDER REPEATED LOADING." Journal of Structural and Construction Engineering (Transactions of AIJ) 437 (1992): 11–20. http://dx.doi.org/10.3130/aijsx.437.0_11.

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Munck, Matthias De, Jolien Vervloet, Michael El Kadi, Svetlana Verbruggen, Jan Wastiels, Tine Tysmans, and Olivier Remy. "Repeated Loading of Cement Composite Sandwich Beams." Proceedings 2, no. 8 (June 14, 2018): 479. http://dx.doi.org/10.3390/icem18-05353.

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Dissertations / Theses on the topic "Repeated loading"

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Abbas, Fattah Khudyair. "The behaviour of plated structures under repeated loading." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314676.

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Conn, Gerald Michael. "The two-way repeated loading of a silty clay." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/14564.

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The main aim of the research was to study the behaviour of a silty clay under two-way cyclic loading. Equipment was developed for the application of a sinusoidally varying deviator stress to a sample in the triaxial cell. The equipment was designed to apply deviator stresses in both compression and extension during each cycle. ii A programme of monotonic and two-way cyclic triaxial tests has been performed on samples of Keuper Marl, isotropically consolidated to a range of stress histories. The build-up of strain and pore pressure during repeated loading is discussed. A model is developed, within the framework of the critical state theory of soil mechanics, to predict the amount of pore pressure produced by a given number of loading cycles at a known stress level. An extension of the model is suggested whereby the varied loading, more appropriate to offshore foundation conditions, may be analysed. In addition, a programme of monotonic and cyclic simple shear tests has been performed. The equipment has been developed, during the course of the research, to enable the direct measurement of pore pressure during shear. At attempt has also been made to monitor the change in lateral stress during shear by means of an instrumented membrane. The results of the simple shear tests have been analysed and are presented in terms of horizontal shear stress and effective vertical stress. An attempt has been made. to deduce the principal stresses present in a sample subject to simple shear loading and a method of relating the results from monotonic tests using simple shear and triaxial devices is discussed.
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Loach, Simon C. "Repeated loading of fine grained soils for pavement design." Thesis, University of Nottingham, 1987. http://eprints.nottingham.ac.uk/13693/.

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The primary aim of this research was to investigate the behaviour of a clay subjected to a loading regime similar to that experienced by a road subgrade under traffic loading in Great Britain. The material used was Keuper Marl. The samples were anisotropically consolidated in a triaxial apparatus from a slurry which allowed careful control over the stress history and produced uniform samples. The samples were fully instrumented and the apparatus was capable of applying repeated axial and radial stresses. The test programme was designed to investigate the resilient and permanent response of the samples to a variety of stress pulse magnitudes and time periods. The main conclusions were: i) The material exhibited a marked stress softening. ii) The mean normal effective stress remained constant under a variety of total stress paths over the range of frequencies tested. iii) The resilient response was found to depend on the magnitude of the applied stress pulse and the mean normal effective pressure, and to be independent of the preconsolidation pressure. iv) The material exhibited significant thixotropy. A smaller parallel series of tests was carried out on compacted triaxial samples of three clays (Keuper Marl, Gault clay and London clay) in a simple pneumatic repeated load triaxial rig. The test programme was designed to investigate the resilient response of the samples over a range of repeated deviator stresses. The suction moisture content relationship for each clay was established, and the resilient response of the clay was found to be controlled by the magnitude of the stress pulse and the suction. A series of California Bearing Ratio tests was carried out on compacted samples of the three clays, and on anisotropically consolidated samples of Keuper Marl, to allow a comparison to be made between the resilient modulus and CBR. A review of previous work is presented.
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Thom, Rachael. "Performance of unsaturated soil under monotonic and repeated loading." Thesis, Queen's University Belfast, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486217.

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Unsaturated soils constitute a large proportion of the foundation materials supporting infrastructure throughout the world and they are subject to various loading conditions. The research into the behaviour of unsaturated soils has been ignored for many centuries; however the recent years have witnessed a surge of research activities looking into various aspects. The present research reported in this thesis places emphasis on the perfomlance of unsaturated soils under repeated loading. As part of the research, a series of monotonic and repeated load triaxial tests were perfonned on samples of kaolin clay prepared to various compaction water contents, 22%, 25%, '28% and 31% and two different compression pressures, 400kPa and 800kPa. Undrained tests were conducted in a newly developed simple triaxial cell for testing unsaturated soil under repeated loading with hydraulic loading system, hall-effect transducers for on-sample strain measurements and thennocouple psychrometer for suction measurements. Drained tests were conducted in twin-cell stress path apparatus with controlled suction by axis translation teclmique. The main findings of the research provide a remarkable insight into the influence of suction, and more imp011antly the degree of saturation, on the permanent defonnation and resilient behaviour of unsaturated compacted kaolin. At high suctions repeated loading was found to have a positive effect on the soil pelfoIl1lance. However, at low suction, repeated loading had a detrimental effect on the strength and stiffness of unsaturated soil, under both drained and undrained conditions. An important outcome of the research is the progression of permanent defoIl11ation throughout repeated loading with no asymptotic value ever being reached, particularly at loading amplitudes of more than 70% of the failure load.
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Shaw, Marcus Robert. "Crack growth rates under fatigue and repeated impact loading on reactor graphites." Thesis, University of Liverpool, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316970.

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Shangase, Thobani Paul. "Changes in material characteristics of AISI 430 stainless steel plates subjected to repeated blast loading." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/27391.

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Structures deform at high strain rates and temperatures when exposed to impulsive loads. To accommodate the macro change there are microstructural changes that occur, i.e., grain morphology and shear banding. Most studies report on macroscopic response, i.e., large inelastic deformation and tearing of the structure, while limited studies have reported on microscopic changes that develop in the structure. The microstructure is directly related to the mechanical properties and performance of the material. Therefore, understanding the effect of high strain rate loadings on the microstructural evolution and subsequent mechanical properties of metals and alloys is necessary for mechanical design. The main objective of this research was to investigate microstructural changes to characterise the strain distribution and plastic deformation, owing to impulsive loading. Features within the microstructure that could be used to characterise deformation included grain size morphology changes, the presence of shear bands and sub-grain networks. The electron backscatter diffraction (EBSD) technique, which used Kikuchi patterns to characterise the strain distribution in the crystal of the deformed material, was also used as a characterisation tool. The first step in the experimental procedure was to select the appropriate material to investigate these microstructural changes. There was also the systematic investigation into the use of single and double heat treatments. These were used to achieve a large equiaxed grain structure, which was desirable from a microstructural point of view but was not desirable for blast-resistant material selection. The two-step heat treatment was concluded to be the most suitable heat treatment for the annealing and homogenisation of the AISI 430 stainless steel plates. The AISI 430 stainless steel plates used were 244 mm by 244 mm in size and had a circular exposed area of 106 mm. These plates were subjected to repeated explosive blasts, using a plastic explosive (PE4). The charge mass was varied for each test and the stand-off distance was kept constant at 150 mm for uniform loads and 13 mm for localised loads. Two plates were selected to investigate the uniform loading scenario. The first plate, a torn plate, used a charge mass of 30 g and one blast and the second plate, an inelastically-deformed plate, used a charge mass of 10 g and was exposed to three blasts. These two plates offered the same overall charge load with a different strain path. A further two plates were chosen for the investigation into the localised loading scenario. One plate, a petalled plate, used a 6 g charge mass and was exposed to two blasts and the second plate, an inelastically-deformed plate, used a 5 g charge mass and was also exposed to two blasts. The latter two plates offered an investigation into the effect of an increased charge load, where charge load affected the strain rate of the deformation resulting from the blast load. All four plates were sectioned across the midline of the dome and then ground and polished to a mirror finish, using OP-S. The polished samples were analysed, using optical microscopy and EBSD. In addition, Vickers hardness tests were carried out along the midline of the sectional plate profiles, in order to evaluate the extent of strain hardening. All the plates showed either a response of inelastically deforming or of complete or partial tearing failures when subjected to blast loads. For inelastic deformation failures, a global dome was characteristic of the uniform loading condition and an inner dome superimposed by the global dome was characteristic of the localised loading condition. Variation of charge mass and the number of blasts showed an increasing linear relationship between the impulse and midpoint deflection. The macrostructure showed a large variation of failures in the localised condition. The microstructural characterisation results produced micrographs showing regions of long, flat grains with multiple sub-grain networks, indicating deformed microstructures of the blast loaded plates. Parts of the microstructures displayed equiaxed/recrystallised grains characteristic of restoration processes, owing to high temperatures. Vickers hardness tests indicated an increase in material hardness as the number of blasts was increased, with a maximum hardness in the central region of the plates. In the first investigation, into uniform loading, the material characterisation results, combined with the fractography results, indicated brittle failure modes typical of high strain rate failures in strain rate sensitive materials, such as the chosen AISI 430 stainless steel plates. In the second investigation, into localised loading, the material characterisation results, combined with the fractography results, indicated a more ductile failure, owing to a 1 g incremental increase of charge mass, which confirmed the strain rate sensitivity of this material.
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Hogg, Victoria. "Effects of repeated loading on masonry arch bridges and implications for the serviceability limit state." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362899.

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Hau, Kah Wai. "Application of a three-surface kinematic hardening model to the repeated loading of thinly surfaced pavements." Thesis, University of Nottingham, 2003. http://eprints.nottingham.ac.uk/10045/.

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Little effort has been made to apply the Critical State Soil Mechanics concept to the prediction of pavement response. The aim of this research is to apply soil mechanics principles, particularly the kinematic hardening concept, to the prediction of the response of lightly trafficked pavements to repeated loading. For this purpose, the finite element critical state program CRISP is used. A comparison is made between the predictions given by the three-surface kinematic hardening (3-SKH) model and a layered elastic analysis BISAR for the resilient deformation produced by repeated loading of a thinly surfaced pavement, and the models are found to be in good agreement. The ability of the 3-SKH model to predict soil behaviour under cyclic loading, and under one-dimensional loading, unloading and reloading is also evaluated. A comparison between model predictions and experimental data obtained by other researchers shows that the 3-SKH model over-predicts the value of K0,nc and hence shear strain during monotonic loading. This problem is magnified when the model is applied to cyclic loading behaviour where large numbers of cycles are involved. The model also predicts an accumulation of negative shear strain with increasing number of cycles under some stress conditions. This will lead to unrealistic predictions of rutting in pavements. However, the model is suitable for obtaining resilient parameters for input to a layered elastic analysis program. A new model, which is a modified version of the 3-SKH model, is therefore proposed by modifying the flow rule and the hardening moduli. This model can correctly predict the value of K0,nc and reduce the amount of shear strain predicted. The model also eliminates the problem of accumulation of negative shear strain with increasing number of cycles. The new model introduces two additional parameters, one of which can be determined by one-dimensional normal compression test, and the other by fitting a set of cyclic loading data. The new model is used to design the required thickness of granular material using the permissible resilient subgrade strain and permanent rut depth criteria during construction. It is found that the new model predicts a realistic granular layer thickness required to prevent excessive rutting, thus showing much promise for use in design of thinly surfaced pavements.
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Richardson, Ian R. "The stress-strain behaviour of dry granular material subjected to repeated loading in a hollow cylinder apparatus." Thesis, University of Nottingham, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287191.

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Abdi, Hadj. "Behaviour of clayey soils under slow repeated loading and laboratory estimation of K(0) for overconsolidated sands." Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/6772.

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Repeated undrained load tests were carried out under the application of cyclic deviator stresses at a frequency that varies from 0.0001 Hz up to 0.001 Hz. For a specific amplitude of applied stress, a critical level of repeated loading (CLRL) was evaluated for both kaolinite and crust clays. The strength of the soil is affected by the frequency, cyclic fluctuation of water table, and the amount of axial strain developed during cycling. The decrease in postcyclic strength is strain-dependent. It is further shown that cycling below the CLRL causes an increase in the overconsolidation of the clayey soils. The effect of cycling in behaviour of soils increases with increasing the OCR. This thesis also describes a method for the determination of in situ horizontal stresses of heavily overconsolidated sands using a stress-path triaxial apparatus. This method was proposed by Garga and Khan (1991) who applied it for overconsolidated clays. The proposed method is based on the concept that if the radial stress exceeds the in situ horizontal stress, while maintaining the axial stress constant and equal to the in situ vertical effective stress, only then will the sample experience significant axial strain. In this investigation, the above method is applied to the samples of known stress histories of overconsolidated sand. The effect of the complex stress history undergone by soils on the estimation of K$\sb0$ by the proposed method is investigated in laboratory. It is found that the proposed method replicated the imposed "in situ" horizontal stress exactly. Also this method is capable of estimating $\rm K\sb0$ of an overconsolidated soil irrespective of the previously imposed stress history. (Abstract shortened by UMI.)
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Books on the topic "Repeated loading"

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Steves, M. A. Response of highway barriers to repeated impact loading: Concrete barriers. Austin, Tex: Center for Transportation Research, Bureau of Engineering Research, University of Texas at Austin, 1985.

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Kaushik, Iyer, and Rubin Carol A, eds. Structural shear joints: Analyses, properties and design for repeat loading. New York: ASME Press, 2005.

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R, Narayanan, and Roberts T. M. 1946-, eds. Structures subjected to repeated loading. London: Elsevier Applied Science, 1991.

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Structures Subjected to Repeated Loading. Routledge, 2006. http://dx.doi.org/10.4324/9780203975046.

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Narayanan, R. Structures Subjected to Repeated Loading (Stability and Strength). Spon Press, 1990.

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R, Narayanan, and Roberts T. M. 1946-, eds. Structures subjected to repeated loading: Stability and strength. London: Elsevier Applied Science, 1991.

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Conn, Gerald Michael. The two-way repeated loading of a silty clay. 1988.

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Iyer, K. A., G. T. Hahn, and C. A. Rubin. Structural Shear Joints: Analysis, Properties and Design for Repeated Loading. Elsevier Science & Technology, 2005.

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Book chapters on the topic "Repeated loading"

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Bennett, E. W. "Partially Prestressed Concrete Members: Repeated Loading." In Partial Prestressing, From Theory to Practice, 135–49. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4438-1_6.

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Osman, A., R. M. Korol, and A. Ghobarah. "Bolted beam-to-column subassemblages under repeated loading." In Earthquake Engineering, edited by Shamim A. Sheikh and S. M. Uzumeri, 687–94. Toronto: University of Toronto Press, 1991. http://dx.doi.org/10.3138/9781487583217-087.

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Raad, Lutfi, and Dieter Weichert. "Stability of Pavement Structures Under Long Term Repeated Loading." In Inelastic Behaviour of Structures under Variable Loads, 473–96. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0271-1_27.

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Lok, T. S., J. A. J. Hamel, J. R. White, and G. A. Nield. "Some Observations of Damaged Bridge Specimens Subjected to Repeated Loading." In Fracture of Engineering Materials and Structures, 866–75. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3650-1_129.

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Takagaki, M., Y. Toi, and T. Asayama. "Fatigue Damage Analysis of Reactor Vessel Model Under Repeated Thermal Loading." In Computational Methods in Engineering & Science, 195. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-48260-4_41.

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Kutmanová, I., M. Škaloud, and K. Januš. "“Breathing” of Longitudinally Stiffened Steel Webs Subject to Repeated Partial Edge Loading." In Contact Loading and Local Effects in Thin-walled Plated and Shell Structures, 158–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-662-02822-3_20.

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Gokhfeld, D. A., and O. S. Sadakov. "A Unified Mathematical Model for Plasticity and Creep Under Variable-Repeated Loading." In Creep in Structures, 23–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84455-3_2.

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Rayabharapu, Vijay Kumar, and Sireesh Saride. "Geocell Reinforced Dense Sand Bases Overlying Weak Sand Sub-grades Under Repeated Loading." In Lecture Notes in Civil Engineering, 285–94. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0559-7_32.

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Gokhfeld, D. A., O. S. Sadakov, and O. F. Cherniavsky. "Related Mathematical Models for Solids and Structures Deformation and Failure Processes Under Repeated Loading." In Inelastic Behaviour of Structures under Variable Loads, 51–81. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0271-1_4.

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Gupta, Gaurav, Hemant Sood, and Pardeep Kumar Gupta. "Behaviour of Stabilized Soils Under Repeated Traffic Loading: A Review and Future Research Directions." In Lecture Notes in Civil Engineering, 53–67. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6466-0_6.

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Conference papers on the topic "Repeated loading"

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Thiruppukuzhi, Srikanth, and Zeynel Arslanoglu. "Methodology to Predict Product Reliability Under Repeated Random Loading." In 2007 Proceedings Annual Reliability and Maintainability Sympsoium. IEEE, 2007. http://dx.doi.org/10.1109/rams.2007.328073.

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Zhao, Hai-bin, Yan-ji Hong, Tie-jun Zhou, Can-yan Cui, and Chao-jun Xin. "Studies on measurement of pulse thrust with repeated loading." In Photonics Asia 2007, edited by Dianyuan Fan and Robert F. Walter. SPIE, 2007. http://dx.doi.org/10.1117/12.758363.

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Chen, Cheng, Louis Ge, and Jia Sheng Zhang. "Modeling Resilient Modulus of Unbound Granular Materials under Repeated Loading." In GeoHunan International Conference 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41046(353)2.

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Dahal, Beema, S. M. Naziur Mahmud, and Debakanta Mishra. "Simulating Ballast Breakage Under Repeated Loading Using the Discrete Element Method." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6117.

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The ballast layer in a railroad track helps distribute loads from the superstructure to the formation; a well-designed ballast layer is also meant to prevent excessive vertical, lateral and longitudinal movement of the track under loading. When subjected to repeated loading, the granular ballast particles often undergo breakage leading to significant changes in the shear strength as well as drainage characteristics of the ballast layer. Excessive ballast degradation leads to increased vertical settlements, and is often associated with speed restrictions and increased passenger discomfort. Several researchers in the past have studied the phenomenon of ballast breakage in a laboratory setting. However, due to complexities associated with these large-scale laboratory tests, detailed parametric studies are often not feasible. In such cases, numerical modeling tools such as the Discrete Element Method (DEM) become particularly useful. This paper presents findings from an ongoing research effort at Boise State University aimed at studying the phenomenon of ballast breakage under repeated loading using a commercially available Discrete Element Package (PFC3D®). Ballast particles were simulated as clusters of balls bonded together, and were allowed to undergo breakage when either the maximum tensile stress or the maximum shear stress exceeded the corresponding bond strength value. Different factors studied during the parametric analysis were: (1) load amplitude; (2) loading frequency; (3) number of cycles of loading; (4) bond strength; and (5) particle size distribution. The objective was to identify the relative importance of different factors that govern the permanent deformation behavior of railroad tracks under loading.
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Takahashi, Kosuke, Hiroaki Kitoh, Hisao Tsunokake, and Hajime Ohuchi. "Interface Shear Transfer of Diagonally Arranged Reinforcing Bars under Repeated Loading." In Structures Congress 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41031(341)308.

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Nishimura, N., K. Murase, and T. Ito. "Nondestructive evaluation of spall damage under repeated impact with ultrasonic method." In DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading. Les Ulis, France: EDP Sciences, 2009. http://dx.doi.org/10.1051/dymat/2009170.

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Votzke, Callen, Kyle Clocker, Yigit Menguc, and Matthew L. Johnston. "Electrical Characterization of Stretchable Printed Liquid Metal Interconnects under Repeated Cyclic Loading." In 2019 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS). IEEE, 2019. http://dx.doi.org/10.1109/fleps.2019.8792306.

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Pandey, Akash, S. M. Sivakumar, and Thomas Kurian. "Behaviour of a high strength low alloy steel under extreme repeated loading." In PROCEEDINGS OF THE INTERNATIONAL ENGINEERING RESEARCH CONFERENCE - 12TH EURECA 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5120216.

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Walter, Jakob R., Amr M. Morsy, and Jorge G. Zornberg. "Experimental and Numerical Investigation of Lateral Earth Pressures Generated from Repeated Loading." In IFCEE 2018. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481608.016.

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Asha, M. N., and G. Madhavi Latha. "Strength Behaviour of Reinforced Soil-Aggregate Systems under Repeated and Cyclic Loading." In GeoCongress 2012. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412121.156.

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