Log in

Relevant bibliographies by topics / Ring stresses

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Ring stresses'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Ring stresses.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Ring stresses"

1

Mjaku, Malush. "Software simulation of residual stresses in high frequency longitudinal welded pipes." Technium: Romanian Journal of Applied Sciences and Technology 2, no. 4 (June 10, 2020): 87–97. http://dx.doi.org/10.47577/technium.v2i4.882.

Full text

Abstract:

Abstract - This paper presents results obtained via experimental measurements of residual stresses in the cross sections of longitudinal welded pipes. The experiment was carried out in different dimensions and thickness of the pipes where it is noticed that the smaller the diameter of the pipe, the greater the residual stresses because the degree of deformation during the production of pipes with smaller diameter is greater. Residual stresses are measured with strain gages set upon the outside wall of the pipes. The results received from the gages show considering amount of stress captured in the pipe wall because of cold plastic formation process [1]. After cutting the rings, their opening is recorded, which is variable and depends on several parameters such as: ring diameter, thickness, type of material and its reinforcement as well as the degree of plastic deformation when forming the pipe sheath [2]. The difference in the display of the measuring tape when the ring is in the open and closed position is the residual deformation that corresponds to the residual stresses that occurs in the ring.

APA, Harvard, Vancouver, ISO, and other styles

2

Hatheway, Alson E. "Tensile stresses in ring-mounted glass lenses." Optical Engineering 57, no. 05 (May 17, 2018): 1. http://dx.doi.org/10.1117/1.oe.57.5.055105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Giri, Anoj, Chandan Pandey, and Manas M. Mahapatra. "To study the effect of stress magnitude and tool geometry on the calibration coefficients: Ring core technique." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 6 (October 13, 2017): 674–84. http://dx.doi.org/10.1177/0954408917737585.

Full text

Abstract:

Ring core technique is widely used to measure the subsurface residual stresses in components. In the analytical evaluation of residual stresses by ring core technique, the calibration coefficients play the vital role for the correct estimation of residuals stresses. Calibration coefficients needed to evaluate the residual stresses by dry ring core technique have been determined with respect to varying ring core tool dimensions. The effect of the biaxial stress combinations and trepan tool diameters on the calibration coefficients was investigated. The trepanning effect of dry ring core process was also investigated through 3D finite element models. The finite element analysis was done to prepare a database of strains for the different stress combinations with respect to the depth of cut. After that the regression equations were developed to directly calculate the calibration coefficients for the material SS 304L. Furthermore, this finite element data was also used to develop the mathematical relations to calculate the residual stresses from the strain readings obtained in dry ring core process. Error estimation of residual stress calculation was also done for both analytical and regression models. The database of relations between residual stress and strains developed in the present study with respect to a given dimension of ring core tool was found to be adequate in estimating the residual stresses directly from the strain reading during dry ring coring.

APA, Harvard, Vancouver, ISO, and other styles

4

Hsueh, C. H. "Stresses in Multilayered Ceramics Subjected to Biaxial Flexure Tests." Materials Science Forum 606 (October 2008): 79–92. http://dx.doi.org/10.4028/www.scientific.net/msf.606.79.

Full text

Abstract:

Although standard test methods for biaxial strength measurements of ceramics have been established and the corresponding formulas for relating the biaxial strength to the fracture load have been approved by American Society for Testing and Materials (ASTM) and International Organization for Standardization, respectively, they are limited to the case of monolayered discs. Despite the increasing applications of multilayered ceramics, characterization of their strengths using biaxial flexure tests has been difficult because the analytical description of the relation between the strength and the fracture load for multilayers subjected to biaxial flexure tests is unavailable until recently. Using ring-on-ring tests as an example, the closed-form solutions for stresses in (i) monolayered discs based on ASTM formulas, (ii) bilayered discs based on Roark’s formulas, and (iii) multilayered discs based on Hsueh et al.’s formulas are reviewed in the present study. Finite element results for ring-on-rings tests performed on (i) zirconia monolayered discs, (ii) dental crown materials of porcelain/zirconia bilayered discs, and (iii) solid oxide fuel cells trilayered discs are also presented to validate the closed-form solutions. With Hsueh et al.’s formulas, the biaxial strength of multilayered ceramics can be readily evaluated using biaxial flexure tests.

APA, Harvard, Vancouver, ISO, and other styles

5

Neu, R. W., and Huseyin Sehitoglu. "Simulation of Cone Bore Growth in Bearings With a Three-Ring Model." Journal of Applied Mechanics 61, no. 3 (September 1, 1994): 589–95. http://dx.doi.org/10.1115/1.2901500.

Full text

Abstract:

Cone bore growth in case-carburized bearings was modeled by incorporating the mechanisms of thermal-induced phase transformation and low temperature creep in an approximate model of the cone. The inner case, core, and outer case regions of the bearing cone are modeled by three concentric rings. Using a mechanics of materials approach with the aid of some simplifying assumptions (i.e., radial stresses remain zero throughout the ring thickness and net circumferential strain is the same for all three rings), the influence of temperature, interference fit stresses, initial case carburizing stresses, and stress relaxation on the change in bore diameter and circumferential stress during service could be determined. The model indicated that both thermal-induced transformation and low temperature creep may play a role in bore growth during service. As temperature was increased from 70° C to 200°C, the susceptibility to bore growth became greater. Also, an increase in the interference fit increased the initial cone bore growth rate. In addition, the effect of the recondition treatment on the bore diameter and residual stresses was studied. The bore diameter generally decreased during the recondition treatment, and this was attributed to the relaxation of residual stresses by low temperature creep.

APA, Harvard, Vancouver, ISO, and other styles

6

Frankovský, Peter, František Trebuňa, Oskar Ostertag, Patrik Šarga, Ingrid Delyová, and Ján Kostka. "Utilisation Possibilities of PhotoStress Method in Determination of Residual Stresses." Applied Mechanics and Materials 732 (February 2015): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amm.732.3.

Full text

Abstract:

The presented paper demonstrates the determination of residual stresses by means of PhotoStress® method. The identification was performed on a drilled and subsequently loaded sample of a split ring. Through drilling and subsequent loading of the sample we were able to simulate residual stresses throughout the surface of the split ring. Using the values of residual stresses, a gradient of residual stresses was specified. The 3 mm thick split ring was laser-cut from a non-alloyed fine-grained structural steel sheet suitable for welding, i.e. steel 11 523. It was coated with 3.125 mm thick photoelastic coating PS-1A with fringe constant.

APA, Harvard, Vancouver, ISO, and other styles

7

Wang, Yan Shuang, and Hai Feng Zhu. "Contact Stress Analysis on a Large-Sized Four Contact-Point Slewing Bearing with Negative Axial Play." Applied Mechanics and Materials 307 (February 2013): 223–26. http://dx.doi.org/10.4028/www.scientific.net/amm.307.223.

Full text

Abstract:

The analysis method on contact stresses between balls and inner/outer ring raceways of a large-sized four contact-point slewing bearing with negative axial play was present. The contact stresses and contact areas between balls and inner/outer ring raceways of a slewing bearing were computed at different negative axial plays without applied load. The results show that a ball contacts with inner/outer ring raceways at four points whose contact areas and contact stress distribution are approximately same. The contact stresses between balls and inner ring raceway are slightly higher than those at outer ring raceway. Contact stress and contact area increase with absolute value of negative axial play increasing. Startup friction torque can be improved by increasing the absolute value of negative axial play.

APA, Harvard, Vancouver, ISO, and other styles

8

Václavík, J., O. Weinberg, P. Bohdan, J. Jankovec, and S. Holý. "Evaluation of Residual Stresses using Ring Core Method." EPJ Web of Conferences 6 (2010): 44004. http://dx.doi.org/10.1051/epjconf/20100644004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Klar, Assaf, Michael Roed, Irene Rocchi, and Ieva Paegle. "Evaluation of Horizontal Stresses in Soil during Direct Simple Shear by High-Resolution Distributed Fiber Optic Sensing." Sensors 19, no. 17 (August 24, 2019): 3684. http://dx.doi.org/10.3390/s19173684.

Full text

Abstract:

This paper presents an approach for evaluating the horizontal stresses that develop in geotechnical Direct Simple Shear (DSS) tests through the use of high-resolution distributed fiber optic sensing. For this aim, fiber optics were embedded in 3D printed rings used for confining the soil in the test procedure. An analytical approach linking the measured spatially-distributed strain profile and the internal soil-ring contact stresses is developed in the paper. The method is based on representation of the contact stresses by a Fourier series expansion, and determining the coefficients of the series by minimizing the difference between the measured strain and the analytical strain within the linear elastic ring. The minimization problem results in a linear set of equations that can easily be solved for a given measurement. The approach is demonstrated on a set of drained DSS tests on clean sand specimens. Stress paths using the evaluated horizontal stresses are plotted together with Mohr circles at failure. These illustrate how, in these specific tests, the horizontal stress increases and principal stress direction rotates, until failure occurs along horizontal planes.

APA, Harvard, Vancouver, ISO, and other styles

10

Sigaeva, Taisiya, Michel Destrade, and Elena S. Di Martino. "Multi-sector approximation method for arteries: the residual stresses of circumferential rings with non-trivial openings." Journal of The Royal Society Interface 16, no. 156 (July 2019): 20190023. http://dx.doi.org/10.1098/rsif.2019.0023.

Full text

Abstract:

The opening angle method is a popular choice in biomechanics to estimate residual stresses in arteries. Experimentally, it means that an artery is cut into rings; then the rings are cut axially or radially allowing them to open into sectors; finally, the corresponding opening angles are measured to give residual stress levels by solving an inverse problem. However, for many tissues, for example in pathological tissues, the ring does not open according to the theory into a neat single circular sector, but rather creates an asymmetric geometry, often with abruptly changing curvature(s). This phenomenon may be due to a number of reasons including variation in thickness, microstructure, mechanical properties, etc. As a result, these samples are often eliminated from studies relying on the opening angle method, which limits progress in understanding and evaluating residual stresses in real arteries. With this work, we propose an effective approach to deal with these non-trivial openings of rings. First, we digitize pictures of opened rings to split them into multiple, connected circular sectors. Then we measure the corresponding opening angles for each sub-sector. Subsequently, we can determine the residual stresses for individual sectors in a closed-ring configuration and, thus, approximate the circumferential residual bending effects.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Ring stresses"

1

Stephens, D. G. "Residual stresses in ring stiffened cylinders." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384531.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Rashid, Asim. "MINIMIZING CONTACT STRESSES IN AN ELASTIC RING BY RESPONSE SURFACE OPTIMIZATION." Thesis, Högskolan i Jönköping, Tekniska Högskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-13023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Jerabek, Jakub, Allessandra Keil, Jens Schoene, Rostislav Chudoba, Josef Hegger, and Michael Raupach. "Experimental and Numerical Analysis of Spalling Effect in TRC Specimens." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244046893347-05461.

Full text

Abstract:

The paper presents the study of spalling effect occurring under tensile loading in thin-walled TRC specimens. The experimentally observed failure patterns are first classified and the performed experiment design is explained and discussed. A parameter study of spalling effect with varied thickness of concrete cover and reinforcement configurations including both the textile fabrics and the yarns provided the basis for numerical analysis of the effect. The applied numerical model was designed in order to capture the initiation and propagation of longitudinal cracks leading to the separation of concrete blocks from the textile fabrics. A meso-scopic material resolution in a single crack bridge is used for the simulation exploiting the periodic structure of the crack bridges both in the lateral and in the longitudinal direction of the TRC specimens. The matrix was modeled using an anisotropic damage model falling in the microplane-category of material models. The bond between yarn and matrix follows a non-linear bond-law calibrated using pull-out tests. The epoxy-impregnated reinforcement is considered as a homogeneous bar.

APA, Harvard, Vancouver, ISO, and other styles

4

Travis, David J., Vernon Meentemeyer, and Roger P. Belanger. "Stressed Trees Produce a Better Climatic Signal than Healthy Trees." Tree-Ring Society, 1990. http://hdl.handle.net/10150/261930.

Full text

Abstract:

The basis for the selection of trees to be used in the production of dendrochronologies has long been an issue (Douglass 1946; Fritts 1976). In humid regions the common practice has been to use trees that appear to be in good health. As a part of a larger study involving the impact of ice storms on tree-ring increments (Travis 1989), we show that trees stressed as a result of ice damage produced a stronger climatic signal than nondamaged trees.

APA, Harvard, Vancouver, ISO, and other styles

5

Aleong, Chris J. "Experimental determination of residual stresses in filament wound composite rings." Thesis, University of Ottawa (Canada), 1986. http://hdl.handle.net/10393/4818.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Watson, Emma, and Brian H. Luckman. "The Development of a Moisture-Stressed Tree-Ring Chronology Network for the Southern Canadian Cordillera." Tree-Ring Society, 2001. http://hdl.handle.net/10150/251652.

Full text

Abstract:

Fifty-three ring-width chronologies have been developed from open-grown, low-elevation stands of Pseudotsuga menziesii (Douglas-fir) and Pinar ponderosa (ponderosa pine) in the southern Canadian Cordillera. These chronologies will be used to develop precipitation reconstructions for the region. The sites are unevenly distributed across the interior valleys from east of the Coast Ranges to the Canadian Rockies and from the Canada-U.S. border to the northern limits of both species. The chronologies range from 123-691 years (mean = 383 years) and, on average, have a strong within-chronology common signal (Expressed Population Signal > 0.85) with as few as eight trees. A Rotated Principal Components Analysis (RPCA) identified three regions within which annual ring-width chronologies covary similarly. A preliminary assessment of regional chronologies and patterns of extreme narrow and wide marker rings demonstrates that common growth variations exist in the chronology network that are probably precipitation related. Both the RPCA and marker ring analyses suggest distinctive regional patterns of growth on both interannual and longer timescales that vary through time and are possibly linked to persistent large scale climatic anomalies.

APA, Harvard, Vancouver, ISO, and other styles

7

Gonzalez-Mendez, Jose Luis. "Prediction of Geometric Distortions and Residual Stresses on Heat Treated Hot Rolled Rings." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322064630.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Seeley, Kathryn E. "Evaluation and Validation of Measures of Chronic Stress in Ring-tailed Lemurs (Lemur catta)." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492536480829096.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

She, Dawei. "Analysis of Ni and Fe-based Alloys for Turbine Seal Ring Applications." Scholar Commons, 2018. http://scholarcommons.usf.edu/etd/7229.

Full text

Abstract:

Metal sealing rings have been used widely in compressors, turbines and hydraulic devices. Such rings can extend out due to elasticity, and keep close contact with the valve wall, resulting in the formation of a functional seal under pressure. In this project, the failure of metal sealing rings is considered. Sealing component failure due to stress relaxation can threaten the safety of the whole steam turbine. The object of this study was to examine the stress relaxation response and corresponding changes in microstructure of metal sealing rings used in nuclear steam turbine under high temperature and applied stress. The two kinds of sealing ring samples were selected for GH4145 and GH2132. In this paper, all samples were tested by accelerated simulation experiment. The test temperature was controlled at 400℃, 600℃, and 800℃. The 400℃ experiments lasted for 10, 20, 30 and 40 hours, while the 600℃ and 800℃ experiments lasted for 5, 10, 15 and 20 hours. The surface morphology was observed by metallographic analysis. It was found that the two kinds of sealing ring samples presented with a continuous development of grain coarsening and a decrease of the twins when time and test temperature were increased. The prolongation of time and increase of test temperature will drive the grain coarsening and reduce the twins faster. Many precipitates and inclusions were observed on the surface. The composition of precipitation was examined by scanning electron microscopy (SEM). It was further studied by testing samples with applied stress. The differences between the two tests and their influence on mechanical properties are discussed. The grain coarsening and twinning in the alloy will reduce the stress relaxation resistance of the material. Additionally, the precipitates and inclusions in the alloy may adversely affect the stress relaxation performance. Sealing rings using the nickel-based superalloys have stronger anti-stress relaxation performance than sealing rings made of iron-based superalloys.

APA, Harvard, Vancouver, ISO, and other styles

10

Yang, Kang. "Numerical and semi analytical models for electromagnetic ring expansion test." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2350.

Full text

Abstract:

Le taux de déformation des matériaux est élevé pendant le soudage / formage à grande vitesse, le découpage, le sertissage, etc. Les propriétés des matériaux sous déformation à grande vitesse ne suivent pas la même loi que dans le cas de chargement quasi statiques. La caractérisation des matériaux à taux de déformation important est assez difficile et nécessite des équipements sophistiqués. Grâce au développement de la technologie de formage électromagnétique, le test d'expansion d'anneau électromagnétique présente un grand potentiel à utiliser pour caractériser les matériaux à haute vitesse de déformation. Pendant le test d’expansion de l’anneau électromagnétique, la pièce à usiner peut atteindre une vitesse d’expansion de l’ordre de 100m/s et une vitesse de déformation de 104 s-1. Par conséquent, ce test peut être utilisé pour prédire les paramètres du matériau, tels que la dureté et la ductilité à déformation à grande vitesse. Pour d’atteindre cet objectif, un modèle approprié décrivant le processus est nécessaire. Ce modèle doit contenir un couplage électromagnétique-mécanique-thermique pour bien décrire le problème multi-physique. Il existe deux méthodes principales de modélisation dans la littérature, viz. Les méthodes semi-analytiques et les méthodes des éléments finis (parfois combinées avec la méthode des éléments limitants). Les méthodes semi-analytiques nécessitent un temps de calcul court mais offrent une faible précision par rapport aux méthodes des éléments finis. Cependant, en raison de la complexité du couplage multi-physique, l’erreur de calcul est difficile à estimer. De plus, les déformations hétérogènes ainsi que les états de contrainte compliqués peuvent influencer l’identification. Dans ce sens, cette thèse s’est principalement concentrée sur les méthodes d’analyse et de modélisation du test d’expansion d’anneau électromagnétique, incluant les comportements locaux et les phénomènes dynamiques à l’aide des outils expérimentaux et numériques. Par ailleurs, cette thèse comprend aussi le développement d’un méthode semi-analytique permettant le couplage multi-physique, ce qui a été validé par un modèle numérique idéal et par des tests expérimentaux. Les résultats expérimentaux ont été obtenus à l’aide d’une caméra à grande vitesse et du vélocimétrie photovoltaïque Doppler (PDV) pour différents cas tests. Ils ont été utilisés pour déterminer les paramètres du processus et du matériau à l’aide des modèles numériques. Les modèles adaptés pour analyser les états de contrainte et de déformation durant le test d’expansion d’anneau montrent que ce dernier n’est pas un test de traction uniaxial pur comme revendiqué par les chercheurs. En outre, le phénomène de vibration qui se produise de la récupération élastique a été étudié par simulations multi-physiques et par systèmes PDV. Cette étude de récupération élastique permet de mieux comprendre les paramètres influençant du test, ce qui pourrait être utilisé pour contrôler le rebond dans d’autres processus électromagnétique. La méthode de modélisation semi-analytique pour le test d’expansion de l’anneau électromagnétique, qui comprend quatre parties de calcul (partie mécanique, thermique, force de Lorentz et courant de Foucault), a été analysée à l’aide de simulations numériques. Les résultats obtenus ressemblent étroitement aux résultats obtenus par un test idéal et un test expérimental. L’analyse d’erreur des différents aspects physiques permet d’améliorer la précision de calcul semi-analytique, ce qui pourrait être utilisé comme outil supplémentaire d’obtention rapide des paramètres de contrôle dans les tests. Il pourrait aussi être utilisé pour l’identification des paramètres des matériels à déformation à grande vitesse
High stain rate material deformations are prevalent during high speed impacts, high speed forming/welding, cutting, crimping, blast etc. Characteristics of materials under high strain rate deformation do not follow the same as it occurs under the quasi-static loading conditions. However, characterization of materials under high strain rate deformation is always challenging and it requires sophisticated equipment. Thanks to the development in electromagnetic forming technology, the electromagnetic ring expansion test shows a great potential to be used to characterize materials under high strain rate conditions. During the electromagnetic ring expansion test, the workpiece can reach deformation velocities in the order of 100 m/s and a strain rate of up to 104 s-1. Consequently, this test can be used to predict the material parameters such as the strain rate hardening and ductility under extremely high strain rates (strain rates in the order of 103 – 104 s-1). In order to achieve this goal, an appropriate model is required to describe the process. The model should contain an electromagnetic-mechanical-thermal coupling to obtain the accurate multi-physics nature of the problem. There exist two main modeling methods in literature, viz., the semi-analytical methods and finite element methods (sometime combined with boundary element method). Normally, the semi-analytical methods require short calculation time while it provides lower accuracy in comparison with finite element methods. However, due to the complexity of multi-physics coupling, the calculation error is difficult to be analyzed. Moreover, errors in calculation and identification assumptions may also result from heterogeneous deformations or localized specific phenomena (such as local necking at multi points or electric current localization, skin effect, edge effect of Lorentz force etc.) that could influence identification work as well as stress and strain states. Therefore, this thesis mainly focused on the analysis and modeling methods of ring expansion test including local behaviors and dynamic phenomena with the help of experimental and numerical tools. Moreover, this thesis also includes a development of a semi-analytical method with multi-physics coupling capabilities, which has been validated using a theoretical model and experimental frameworks. Experimental measurements were obtained using high-speed cameras and photonic Doppler velocimetry (PDV) for various test cases are used together with numerical models to investigate the process and material parameters. The models used to analyze the stress and stain states during a ring expansion test show that the ring expansion test is not a pure uniaxial tensile test as claimed by researchers. Besides, another potential process behavior, the vibration phenomena that occurs during the elastic recovery was investigated using multi-physics simulations and PDV systems. This investigation of the elastic recovery helps to understand the potential influencing parameters of the test those are applicable and could be used to control the springback phenomenon during other electromagnetic forming processes. The semi-analytical modeling method for ring expansion test including four calculation parts (mechanical part, eddy current, Lorentz force calculation, thermal part) were analyzed with the help of numerical simulations. The results obtained from analytical work closely resemble with the numerical simulations for both theoretical model and an experimental case study. The error analysis of various physical aspects allows improving the accuracy of semi-analytical calculation that could be used as an additional platform to obtain rapid calculation of the test conditions. This semi-analytical method could be extended in the future to identify material parameters under high strain rate deformations

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Ring stresses"

1

Graham, J. Preliminary analysis techniques for ring and stringer stiffened cylindrical shells. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1993.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Phillips, David Graham. Preliminary analysis techniques for ring and stringer stiffened cylindrical shells. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1993.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Canada. Defence Research Establishment Atlantic. Prhdef: Stress and Stability Analysis of Ring Stiffened Submarine Pressure Hulls. S.l: s.n, 1987.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Huddleston, John V. Extensibility and compressibility in one-dimensional structures: Cables, tension rods, compression rods, frames, arches, and rings. 2nd ed. Buffalo, N.Y: Exchange Pub. Division, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Jagels, Richard. Drought and cold stress-induced morphometric changes in tree rings of red spruce. Orono, Me: Maine Agricultural and Forest Experiment Station, University of Maine, 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Stress Analysis of HLW Containers: Preliminary Ring Test Exercise. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Crabtree, Kristine L. Water deficit stress effects on bacterial ring rot of potato caused by Clavibacter michiganensis subsp. sepedonicus. 1994.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

US GOVERNMENT. 21st Century Veterans Health: Post-Traumatic Stress Disorder, Implications for Primary Care, Veterans Administration Independent Study Course (Ring-bound). Progressive Management, 2007.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Weiss, Harvey, ed. Megadrought and Collapse. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199329199.001.0001.

Full text

Abstract:

This is the first book to treat the major examples of megadrought and societal collapse, from the late Pleistocene end of hunter–gatherer culture and origins of cultivation to the 15th century AD fall of the Khmer Empire capital at Angkor, and ranging from the Near East to South America. Previous enquiries have stressed the possible multiple and internal causes of collapse, such overpopulation, overexploitation of resources, warfare, and poor leadership and decision-making. In contrast, Megadrought and Collapse presents case studies of nine major episodes of societal collapse in which megadrought was the major and independent cause of societal collapse. In each case the most recent paleoclimatic evidence for megadroughts, multiple decades to multiple centuries in duration, is presented alongside the archaeological records for synchronous societal collapse. The megadrought data are derived from paleoclimate proxy sources (lake, marine, and glacial cores; speleothems, or cave stalagmites; and tree-rings) and are explained by researchers directly engaged in their analysis. Researchers directly responsible for them discuss the relevant current archaeological records. Two arguments are developed through these case studies. The first is that societal collapse in different time periods and regions and at levels of social complexity ranging from simple foragers to complex empires would not have occurred without megadrought. The second is that similar responses to megadrought extend across these historical episodes: societal collapse in the face of insurmountable climate change, abandonment of settlements and regions, and habitat tracking to sustainable agricultural landscapes. As we confront megadrought today, and in the likely future, Megadrought and Collapse brings together the latest contributions to our understanding of past societal responses to the crisis on an equally global and diverse scale.

APA, Harvard, Vancouver, ISO, and other styles

10

Morgan, Ruby. Adult Coloring Book of 30 Funny Quotes for Rings Lovers: 30 Funny Sayings and Beautiful Mandala Patterns to Color, Art Therapy Activity Book for Anxiety and Stress Relief, Mindful Meditation and Relaxation. Independently Published, 2020.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Ring stresses"

1

Kiani, Yasser, and Mohammad Reza Eslami. "Effects of Ring Supports on Thermo-Elastic Buckling of Circular Plate." In Encyclopedia of Thermal Stresses, 1170–73. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_483.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Zhao, Rong Guo, Wen Bo Luo, Zhong Fu Chen, Bin Xu, and Yi Hui Yin. "Effect of Dimensional Tolerance on Displacements and Stresses of Wedged-Ring Joint Structure." In Engineering Plasticity and Its Applications, 1443–48. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-433-2.1443.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Lille, Harri, Jakub Kõo, Alexander Ryabchikov, and T. Pihl. "Measurement of Residual Stresses in Electrochemically Metallized Coatings on Thin Cross-Cut Ring Substrate." In Materials Science Forum, 873–78. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-414-6.873.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Kiani, Yasser, and Mohammad Reza Eslami. "Rings, Thermal Buckling." In Encyclopedia of Thermal Stresses, 4250–54. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-2739-7_509.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Hawong, Jai-Sug, Dong-Chul Shin, and Jeong Hwan Nam. "A Study on the Behaviors and Stresses of O-ring under Uniform Squeeze Rates and Internal Pressure by Transparent Type Photoelastic Experiment." In Experimental and Applied Mechanics, Volume 6, 87–94. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9792-0_15.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Schajer, Gary S., and Philip S. Whitehead. "Hole Drilling and Ring Coring." In Practical Residual Stress Measurement Methods, 29–64. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118402832.ch2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Smith, G. M., and J. F. Riley. "Residual Stresses in Austenitic Generator End-Rings." In International Conference on Residual Stresses, 728–33. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1143-7_122.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Strozzi, A. "Experimental Stress-Strain Field in Elastomeric O-Ring Seals." In Experimental Stress Analysis, 613–22. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4416-9_67.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Fountzoulas, Costas G., Jeffrey J. Swab, and Parimal J. Patel. "Stress Initiation and Propagation in Glass During Ring-on-Ring Testing." In Dynamic Behavior of Materials, Volume 1, 167–75. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06995-1_26.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Waeckel, Nicolas, Jean-François Jullien, and Alain Kabore. "Buckling of Axially Compressed Imperfect Cylinders and Ring Stiffened Cylinders Under External Pressure." In Experimental Stress Analysis, 123–32. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4416-9_14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Ring stresses"

1

"Stress Analysis of the Bi-Metallic Coins – a Potential Shrink Fit Ring & Plug Standard." In Residual Stresses 10. Materials Research Forum LLC, 2016. http://dx.doi.org/10.21741/9781945291173-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

"Evaluation of Residual Stress Effects in Aft Pressure Ring Frame of a Royal Australian Air Force P-3C Maritime Patrol Aircraft." In Residual Stresses 10. Materials Research Forum LLC, 2016. http://dx.doi.org/10.21741/9781945291173-86.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hatheway, Alson E. "Tensile stresses in ring-mounted glass lenses." In SPIE Optical Engineering + Applications, edited by Alson E. Hatheway. SPIE, 2009. http://dx.doi.org/10.1117/12.828587.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Bardia, Kanhaiya L., Donald G. LaBounty, and Michael M. Basic. "Load Distribution Between the Shell and a Stiffening Ring Adjacent to the Saddle Support." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93591.

Full text

Abstract:

In a Zick analysis of a horizontal pressure vessel on two saddle supports with stiffening rings, there is no direct method of determining the distribution of the load between one stiffening ring adjacent to the saddle support and the shell. In this paper, the authors discuss a method of calculating the load distribution between the stiffening ring and the shell. After establishing the load distribution, the stresses in the ring and shell are calculated and compared against the allowable stresses in the ASME Code.

APA, Harvard, Vancouver, ISO, and other styles

5

Zheng, Gang, Sayeed Hossain, Mike Smith, and David Smith. "Simulation and Measurement of Residual Stresses in a Stainless Steel Ring Welded Circular Disc." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78143.

Full text

Abstract:

Residual stresses were predicted and measured in a circular disc containing a partial ring weld. This study first created an axisymmetric finite element model so that the process of introducing the ring weld was simulated using thermal and mechanical modelling. The resulting residual stresses were then mapped onto a 3D model which included the necessary mesh and boundary conditions to simulate the process of residual stress measurement using the deep hole drilling method. Then an experimental programme of residual stress measurement using the deep hole drilling method and the neutron diffraction technique was conducted on the welded circular disc. The results from the deep hole drilling measurements matched well with the neutron diffraction results on the original stress field in the ring weld. While comparison between measurements and predicted residual stresses show that predicted hoop stresses are slightly higher than measured, there is in general a fair comparison between measured and predicted residual stress.

APA, Harvard, Vancouver, ISO, and other styles

6

Gravett, Phillip W., and Robert E. deLaneuville. "Analysis and Results of an SCS-6/Ti-15-3 MMC Reinforced Ring Structure Under Internal Radial Loading." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0074.

Full text

Abstract:

Abstract This paper presents a stress analysis method and test results of a ring structure reinforced with SCS-6/Ti-15-3 MMC under an applied internal radial load. To assess the structural integrity of an MMC reinforced component, the state of stress within the component must be determined. Two major factors complicating the state of stress in the given MMC reinforced rings are the stress concentrations caused by the load fixture and the thermal residual stresses induced during processing. To model the stress concentrations, the ring and its load fixture were modeled as a 3-d solid finite element model. To calculate the processing residual stresses, a 2-d axisymetric finite element thermal stress analysis was completed. Plasticity was modeled with the 2-d axisymetric finite element model accounting for the nonlinear response of the MMC core and monolithic sheath. Testing of the rings at room and high temperature showed good correlation to load-deflection calculations while ultimate strength was far less than predicted. Subsequent post failure analysis revealed preexisting damage within the MMC which was not detected by pretest NDE inspections. This damage did not significantly affect the measured stiffness of the ring, but diminished the ultimate strength by reducing the capability of the MMC in a localized area.

APA, Harvard, Vancouver, ISO, and other styles

7

Gill, Christopher M., Paul Hurrell, John Francis, and Mark Turski. "Design Optimisation of a Ferritic Ring Weld Specimen Using FE Modelling." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77155.

Full text

Abstract:

This paper describes the design optimisation of an SA508 ferritic steel ring weld specimen using FE modelling techniques. The aim was to experimentally and analytically study the effect of post weld heat treatment upon a triaxial residual stress field. Welding highly constrained geometries, such as those found in some pressure vessel joints, can lead to the formation of highly triaxial stress fields. It is thought that application of post weld heat treatments will not fully relax hydrostatic stress fields. Therefore a ferritic multi-pass ring weld specimen was designed and optimised, using 2D finite element modelling, to generate a high magnitude triaxial stress field. The specimen thickness and weld-prep geometry was optimised to produce a large hydrostatic stress field and still allow efficient use of neutron diffraction to measure the residual stress. This paper reports the development of the test specimen geometry and compares the results of welding FE analysis and neutron diffraction measurements. Welding residual stresses were experimentally determined using neutron diffraction; both before post weld heat treatment. Three dimensional moving heat source weld finite element modelling has been used to predict the residual stresses generated by the welding process used. Finite element modelling examined the effect of phase transformation upon the residual stress field produced by welding. The relaxation of welding stresses by creep during post weld heat treatment has also been modelled. Comparisons between the modelled and measured as-welded residual stress profiles are presented. This work allows discussion of the effect of post weld heat treatment of triaxial stress fields and determines if finite element modelling is capable of correctly predicting the stress relaxation.

APA, Harvard, Vancouver, ISO, and other styles

8

Ai, Lei, Yandong He, Fang Qiao, Ganggang Zhang, and Xing Zhang. "A Ring Oscillator based reliability structure for duty-cycle measurement under BTI stresses." In 2014 IEEE 12th International Conference on Solid -State and Integrated Circuit Technology (ICSICT). IEEE, 2014. http://dx.doi.org/10.1109/icsict.2014.7021666.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Halford, Gary R. "MMC Ring Fatigue and Fracture Life Prediction: An Engineering Model." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0084.

Full text

Abstract:

Abstract The framework of an engineering creep-fatigue durability model has been adapted for use in estimating the radial static burst pressure and cyclic low-cycle fatigue macro-crack initiation resistance of continuous fiber reinforced (CFR) metal matrix composite (MMC) rings for application at 800 °F. Rings of circumfrentially wrapped SCS6/Ti-15-3 were manufactured by Textron Specialty Metals and burst tested by Pratt & Whitney as a part of a cooperative program with the NASA Lewis Research Center. Fatigue tests have as yet to be performed. The engineering model is based on a 3-D elasto-plastic micromechanics analysis of the tensile-loaded composite architecture. Use is made of the rule of mixtures, strain compatibility, equilibrium, and the stress-strain relationships of the constituents. Knowledge is required of the mechanical and fatigue properties of the matrix and fibers and how the presence of each affects the sharing of imposed stresses and strains. The model addresses specific issues such as residual fabrication stresses, inelastic deformation within the ductile matrix, multiaxial constraint imposed on the matrix, cyclic relaxation of both residual and applied mean stresses in the matrix, fatigue micro-crack initiation and propagation in the matrix, and tensile fracture of both the ductile matrix and the brittle fibers. In the current application of the model, the specific issues were empirically calibrated through use of tensile and tension-tension fatigue coupons that had been subjected to essentially identical loading as the rings.

APA, Harvard, Vancouver, ISO, and other styles

10

Kurbet, S. N., R. Krishnakumar, and N. Gowrishankar. "Finite Element Analysis of a Piston Ring for Assembly Load Measurements and Interface Stresses." In SIAT 2001. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-28-0053.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Ring stresses"

1

Lee, S. L., M. J. Glennon, and A. Gabriele. Induced Overload Residual Stresses in EX35 Multi-Lug Breech Ring. Fort Belvoir, VA: Defense Technical Information Center, August 1995. http://dx.doi.org/10.21236/ada303482.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

CREA, B. A. Evaluation of Cold Vacuum Drying (CVD) Facility Seal Ring Loading and Stress. Office of Scientific and Technical Information (OSTI), September 1999. http://dx.doi.org/10.2172/798070.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Johnson, G. SSRL-PEP ring divertor channel entrance thermal stress analysis for new bending magnet loads. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/7139378.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Wands, R. Summary of Stress Analysis of CC Cryostat w/o Stiffening Rings. Office of Scientific and Technical Information (OSTI), February 1986. http://dx.doi.org/10.2172/1030011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Truong, T. T. Compression Stress-Relaxation and Oxygen Consumption Behavior of 9975 Shipping Package O-rings. Office of Scientific and Technical Information (OSTI), May 2018. http://dx.doi.org/10.2172/1459422.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Smith, H. D. Initial report on stress-corrosion-cracking experiments using Zircaloy-4 spent fuel cladding C-rings. Office of Scientific and Technical Information (OSTI), September 1988. http://dx.doi.org/10.2172/60497.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Davis, S., and D. Underwood. Cracking of 1-inch UF sub 6 cylinder valve packing nuts: The effects of packing nut torque on stem seal leakage and packing nut stress due to thermal expansion of the PTFE stem seal rings. Office of Scientific and Technical Information (OSTI), August 1989. http://dx.doi.org/10.2172/5684105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!